The Bug Report November 2021 Edition

2021-11-30T00:00:00

Description

# The Bug Report — November 2021 Edition By Mark Bereza · November 30, 2021 ## Your Cybersecurity Comic Relief ![The Bug Report – November 2021 Edition](https://www.trellix.com/en-us/img/newsroom/stories/the-bug-report-november-2021-edition-1.jpg) CVE-2021-20322: Of all the words of mice and men, the saddest are, “it was DNS again.” ## Why am I here? For all our newcomers, welcome to the Advanced Threat Research team’s monthly bug report – a digest of all the latest and greatest vulnerabilities from the last 30-ish days based on merits just a tad more nuanced than sorting NVD by “CVSS > 9.0.” Instead, we focus on qualitative and experience-based analysis, relying on over 100 years of combined industry experience within our team. To those who are returning after having read last month’s issue, I would like to congratulate you for being a Bug Report fan before it was cool – which it now most assuredly is, thanks in no small part to a litany of fascinating vulnerabilities. We encourage our veterans to stick around as long as possible, so that a year from now you can complain about how we’re washed up and how much better our early editions were. * PAN GlobalProtect VPN: CVE-2021-3064 * Linux Kernel: CVE-2021-20322 * Just About All DRAM: CVE-2021-42114 aka Blacksmith ## CPAN GlobalProtect VPN: CVE-2021-3064 ### What is it? Palo Alto Networks (PAN) firewalls that use its GlobalProtect Portal VPN running PAN-OS versions older than 8.1.17 are vulnerable to a cutting-edge, state-of-the-art style of vulnerability known as a “stack-based buffer overflow.” Although the vulnerable code is normally not reachable, when combined with an HTTP smuggling vulnerability, CVE-2021-3064 can be used to gain **remote code execution, a remote shell, and even access to sensitive configuration data** [according to Randori Attack Team researchers](<https://www.randori.com/blog/cve-2021-3064/>). Randori discovered the vulnerability over a year ago but chose not to disclose it to PAN until September of this year, using it as part of its “continuous and automated red team platform” during the interim – I suppose we should be thankful that PAN has claimed in [its security advisory](<https://security.paloaltonetworks.com/CVE-2021-3064>) that no evidence of exploitation of this vuln has been discovered, despite its age. ### Who cares? Absence of “in-the-wild” exploitation aside, we should also be grateful that the number of people who should care is rapidly dwindling (an ever-present theme of 2021). Randori initially reported over 70,000 internet-accessible PAN firewalls running vulnerable versions of PAN-OS [according to Shodan](<https://www.shodan.io/search/facet?query=http.html%3A%22Global+Protect%22&facet=os>), which it later amended to 10,000. As of this writing, that number has fallen to around 7,000. Even so, **7,000 vulnerable firewalls** mean an even larger number of vulnerable clients at risk of an over-the-internet attack vector requiring zero authentication. Those connecting to PAN firewalls running on VMs have even greater cause for concern as these **lack** [ASLR](<https://www.techtarget.com/searchsecurity/definition/address-space-layout-randomization-ASLR>), a factoid I have chosen to add to my ever-growing “why is that a thing” list, right next to the Ghostbusters remake. ### What can I do? We suggest an experiment: open the Shodan search linked above and note the total number of devices running a vulnerable version of PAN-OS. Next, call up whoever manages your firewall and demand they power it down immediately – use threats if you must. Check the Shodan scan again: has the number gone down? If so, it’s probably time to update. If you’re an Arch user and the prospect of updating terrifies you, Palo Alto has also indicated that its signatures for **Unique Threat IDs 91820 and 91855** should block exploitation of CVE-2021-3064. ### The Gold Standard Be sure to stay up to date on the latest CVEs – our [security bulletins](<https://www.mcafee.com/enterprise/en-us/threat-center/product-security-bulletins.html>) are a great resource for finding product information for all kinds of critical vulnerabilities. ## Linux Kernel: CVE-2021-20322 ### What is it? Researchers at the University of California, Riverside have discovered a flaw in the way the Linux kernel handles “ICMP fragment needed” and “ICMP redirect” errors, allowing an attacker to quickly learn the randomized port number assigned to a UDP socket. What this description fails to convey is the big picture impact of this vulnerability, which is its use as a side-channel for the now-prehistoric DNS cache poisoning attack, in which an off-path malicious actor ‘poisons’ a DNS resolver’s cache with a false record, mapping a known domain (google.com) to an IP address of their choosing ([98.136.144.138](<http://98.136.144.138/>)). Truly nefarious. ### Who cares? To be frank, just about everyone should be at least raising an eyebrow at this one. Although the researchers have indicated in [their whitepaper](<https://www.cs.ucr.edu/~zhiyunq/pub/ccs21_dns_poisoning.pdf>) that this particular side-channel only **affects about 13.85% of open resolvers** on the internet, it’s important to note that various security services rely on proof of domain ownership, including even the issuing of certificates, making the impact tremendous. Users of popular DNS service Quad9 have particular cause for concern, as the paper claims it falls under the vulnerable 13.85%. Linux users should also be concerned, and not just because their drivers refuse to work – **DNS software such as BIND, Unbound, and dnsmasq** running on their platform of choice are also vulnerable. ### What can I do? This is where things get tricky. DNS extensions that were standardized over two decades ago, such as DNSSEC and DNS cookies, should successfully mitigate this and all other DNS cache poisoning attack side channels. The unfortunate reality is that these features see very limited adoption due to backwards-compatibility concerns. While we wait for these dinosaurs holding back progress to die out, the authors of the aforementioned whitepaper have suggested some alternative mitigations, including **enabling the IP_PMTUDISC_OMIT socket option**, introducing additional randomization to the structure of the DNS exception cache, and configuring DNS servers with a singular default gateway to outright **reject ICMP redirects**. Further details can be found in section 8.4 of their paper. ### The Gold Standard Unfortunately, not every vulnerability can be adequately addressed by network security products, and this vulnerability happens to be one of those cases. Your best bet is to follow the mitigations mentioned above and keep your servers up to date. ## Just About All DRAM: CVE-2021-42114 aka Blacksmith ### What is it? Blacksmith, a name referring to both the vulnerability and the fuzzer created to exercise it, is a new implementation of the [Rowhammer](<https://users.ece.cmu.edu/~yoonguk/papers/kim-isca14.pdf>) DRAM hardware vulnerability from 2014. The crux of Rowhammer is the use of high frequency read operations to induce bit flips in neighboring regions of physical memory, which can lead to the crossing of any security barrier if the attacker can massage memory so that critical data is stored in a vulnerable physical page. Modern DRAM hardware uses a technology called Target Row Refresh (TRR) to prematurely refresh regions of physical memory targeted by common Rowhammer attacks. Researchers at ETH Zurich and their associates discovered that TRR exploits the uniform nature of memory accesses used by existing Rowhammer attacks to “catch” them, and so devised a Rowhammer attack that used non-uniform accesses, arriving at CVE-2021-42114, which **bypasses TRR and all other modern Rowhammer mitigations**. ### Who cares? Everyone. Just about every common electronic device you can think of uses DRAM and of [the DIMMs (RAM sticks) tested](<https://comsec.ethz.ch/research/dram/blacksmith/>), **the researchers did not find a single one that was completely safe**. It might be easy to presume that hardware vulnerabilities such as this are academically fascinating but have little real-world impact, but research published since 2014 has shown Rowhammer attacks successfully [escape JavaScript containers](<https://comsec.ethz.ch/research/dram/smash/>) in the browser, [cross VM boundaries](<https://comsec.ethz.ch/wp-content/files/flip-feng-shui_sec16.pdf>) in the cloud, and even [achieve RCE](<https://comsec.ethz.ch/wp-content/files/throwhammer_atc18.pdf>) across networks with high enough throughput. Perhaps the greatest tragedy of Blacksmith is that it arrived a month too late – it would have fit in perfectly with Halloween monsters like Freddy Krueger or Jason Voorhees who also see new iterations every few years and refuse to stay dead. ### What can I do? Hide your PC, hide your tablet, and hide your phone, ‘cause they’re hammerin’ everybody out there. Beyond that, there’s not much to be done besides **wait for [JEDEC](<https://www.jedec.org/>) to develop a fix** and for DRAM manufacturers to begin supplying hardware with the new standard. ### The Gold Standard We at McAfee Enterprise are doing everything in our power to address this critical vulnerability. In other words, we’ll be waiting for that JEDEC fix right along with you.

{"id": "TRELLIX:39F2C513984A5BB7A3E14C8FB15CED7C", "vendorId": null, "type": "trellix", "bulletinFamily": "info", "title": "The Bug Report November 2021 Edition", "description": "# The Bug Report \u2014 November 2021 Edition\n\nBy Mark Bereza \u00b7 November 30, 2021\n\n## Your Cybersecurity Comic Relief\n\n![The Bug Report \u2013 November 2021 Edition](https://www.trellix.com/en-us/img/newsroom/stories/the-bug-report-november-2021-edition-1.jpg) CVE-2021-20322: Of all the words of mice and men, the saddest are, \u201cit was DNS again.\u201d \n\n\n## Why am I here?\n\nFor all our newcomers, welcome to the Advanced Threat Research team\u2019s monthly bug report \u2013 a digest of all the latest and greatest vulnerabilities from the last 30-ish days based on merits just a tad more nuanced than sorting NVD by \u201cCVSS > 9.0.\u201d Instead, we focus on qualitative and experience-based analysis, relying on over 100 years of combined industry experience within our team.\n\nTo those who are returning after having read last month\u2019s issue, I would like to congratulate you for being a Bug Report fan before it was cool \u2013 which it now most assuredly is, thanks in no small part to a litany of fascinating vulnerabilities. We encourage our veterans to stick around as long as possible, so that a year from now you can complain about how we\u2019re washed up and how much better our early editions were.\n\n * PAN GlobalProtect VPN: CVE-2021-3064\n * Linux Kernel: CVE-2021-20322\n * Just About All DRAM: CVE-2021-42114 aka Blacksmith\n \n\n\n## CPAN GlobalProtect VPN: CVE-2021-3064\n\n### What is it?\n\nPalo Alto Networks (PAN) firewalls that use its GlobalProtect Portal VPN running PAN-OS versions older than 8.1.17 are vulnerable to a cutting-edge, state-of-the-art style of vulnerability known as a \u201cstack-based buffer overflow.\u201d Although the vulnerable code is normally not reachable, when combined with an HTTP smuggling vulnerability, CVE-2021-3064 can be used to gain **remote code execution, a remote shell, and even access to sensitive configuration data** [according to Randori Attack Team researchers](<https://www.randori.com/blog/cve-2021-3064/>). Randori discovered the vulnerability over a year ago but chose not to disclose it to PAN until September of this year, using it as part of its \u201ccontinuous and automated red team platform\u201d during the interim \u2013 I suppose we should be thankful that PAN has claimed in [its security advisory](<https://security.paloaltonetworks.com/CVE-2021-3064>) that no evidence of exploitation of this vuln has been discovered, despite its age.\n\n### Who cares?\n\nAbsence of \u201cin-the-wild\u201d exploitation aside, we should also be grateful that the number of people who should care is rapidly dwindling (an ever-present theme of 2021). Randori initially reported over 70,000 internet-accessible PAN firewalls running vulnerable versions of PAN-OS [according to Shodan](<https://www.shodan.io/search/facet?query=http.html%3A%22Global+Protect%22&facet=os>), which it later amended to 10,000. As of this writing, that number has fallen to around 7,000. Even so, **7,000 vulnerable firewalls** mean an even larger number of vulnerable clients at risk of an over-the-internet attack vector requiring zero authentication. Those connecting to PAN firewalls running on VMs have even greater cause for concern as these **lack** [ASLR](<https://www.techtarget.com/searchsecurity/definition/address-space-layout-randomization-ASLR>), a factoid I have chosen to add to my ever-growing \u201cwhy is that a thing\u201d list, right next to the Ghostbusters remake.\n\n### What can I do?\n\nWe suggest an experiment: open the Shodan search linked above and note the total number of devices running a vulnerable version of PAN-OS. Next, call up whoever manages your firewall and demand they power it down immediately \u2013 use threats if you must. Check the Shodan scan again: has the number gone down? If so, it\u2019s probably time to update. If you\u2019re an Arch user and the prospect of updating terrifies you, Palo Alto has also indicated that its signatures for **Unique Threat IDs 91820 and 91855** should block exploitation of CVE-2021-3064.\n\n### The Gold Standard\n\nBe sure to stay up to date on the latest CVEs \u2013 our [security bulletins](<https://www.mcafee.com/enterprise/en-us/threat-center/product-security-bulletins.html>) are a great resource for finding product information for all kinds of critical vulnerabilities.\n\n \n\n\n## Linux Kernel: CVE-2021-20322\n\n### What is it?\n\nResearchers at the University of California, Riverside have discovered a flaw in the way the Linux kernel handles \u201cICMP fragment needed\u201d and \u201cICMP redirect\u201d errors, allowing an attacker to quickly learn the randomized port number assigned to a UDP socket. What this description fails to convey is the big picture impact of this vulnerability, which is its use as a side-channel for the now-prehistoric DNS cache poisoning attack, in which an off-path malicious actor \u2018poisons\u2019 a DNS resolver\u2019s cache with a false record, mapping a known domain (google.com) to an IP address of their choosing ([98.136.144.138](<http://98.136.144.138/>)). Truly nefarious.\n\n### Who cares?\n\nTo be frank, just about everyone should be at least raising an eyebrow at this one. Although the researchers have indicated in [their whitepaper](<https://www.cs.ucr.edu/~zhiyunq/pub/ccs21_dns_poisoning.pdf>) that this particular side-channel only **affects about 13.85% of open resolvers** on the internet, it\u2019s important to note that various security services rely on proof of domain ownership, including even the issuing of certificates, making the impact tremendous. Users of popular DNS service Quad9 have particular cause for concern, as the paper claims it falls under the vulnerable 13.85%. Linux users should also be concerned, and not just because their drivers refuse to work \u2013 **DNS software such as BIND, Unbound, and dnsmasq** running on their platform of choice are also vulnerable.\n\n### What can I do?\n\nThis is where things get tricky. DNS extensions that were standardized over two decades ago, such as DNSSEC and DNS cookies, should successfully mitigate this and all other DNS cache poisoning attack side channels. The unfortunate reality is that these features see very limited adoption due to backwards-compatibility concerns. While we wait for these dinosaurs holding back progress to die out, the authors of the aforementioned whitepaper have suggested some alternative mitigations, including **enabling the IP_PMTUDISC_OMIT socket option**, introducing additional randomization to the structure of the DNS exception cache, and configuring DNS servers with a singular default gateway to outright **reject ICMP redirects**. Further details can be found in section 8.4 of their paper.\n\n### The Gold Standard\n\nUnfortunately, not every vulnerability can be adequately addressed by network security products, and this vulnerability happens to be one of those cases. Your best bet is to follow the mitigations mentioned above and keep your servers up to date.\n\n \n\n\n## Just About All DRAM: CVE-2021-42114 aka Blacksmith\n\n### What is it?\n\nBlacksmith, a name referring to both the vulnerability and the fuzzer created to exercise it, is a new implementation of the [Rowhammer](<https://users.ece.cmu.edu/~yoonguk/papers/kim-isca14.pdf>) DRAM hardware vulnerability from 2014. The crux of Rowhammer is the use of high frequency read operations to induce bit flips in neighboring regions of physical memory, which can lead to the crossing of any security barrier if the attacker can massage memory so that critical data is stored in a vulnerable physical page. Modern DRAM hardware uses a technology called Target Row Refresh (TRR) to prematurely refresh regions of physical memory targeted by common Rowhammer attacks. Researchers at ETH Zurich and their associates discovered that TRR exploits the uniform nature of memory accesses used by existing Rowhammer attacks to \u201ccatch\u201d them, and so devised a Rowhammer attack that used non-uniform accesses, arriving at CVE-2021-42114, which **bypasses TRR and all other modern Rowhammer mitigations**.\n\n### Who cares?\n\nEveryone. Just about every common electronic device you can think of uses DRAM and of [the DIMMs (RAM sticks) tested](<https://comsec.ethz.ch/research/dram/blacksmith/>), **the researchers did not find a single one that was completely safe**. It might be easy to presume that hardware vulnerabilities such as this are academically fascinating but have little real-world impact, but research published since 2014 has shown Rowhammer attacks successfully [escape JavaScript containers](<https://comsec.ethz.ch/research/dram/smash/>) in the browser, [cross VM boundaries](<https://comsec.ethz.ch/wp-content/files/flip-feng-shui_sec16.pdf>) in the cloud, and even [achieve RCE](<https://comsec.ethz.ch/wp-content/files/throwhammer_atc18.pdf>) across networks with high enough throughput. Perhaps the greatest tragedy of Blacksmith is that it arrived a month too late \u2013 it would have fit in perfectly with Halloween monsters like Freddy Krueger or Jason Voorhees who also see new iterations every few years and refuse to stay dead.\n\n### What can I do?\n\nHide your PC, hide your tablet, and hide your phone, \u2018cause they\u2019re hammerin\u2019 everybody out there. Beyond that, there\u2019s not much to be done besides **wait for [JEDEC](<https://www.jedec.org/>) to develop a fix** and for DRAM manufacturers to begin supplying hardware with the new standard.\n\n### The Gold Standard\n\nWe at McAfee Enterprise are doing everything in our power to address this critical vulnerability. In other words, we\u2019ll be waiting for that JEDEC fix right along with you.\n", "published": "2021-11-30T00:00:00", "modified": "2021-11-30T00:00:00", "cvss": {"score": 0.0, "vector": "NONE"}, "cvss2": {}, "cvss3": {}, "href": "https://www.trellix.com/content/mainsite/en-us/about/newsroom/stories/research/the-bug-report-november-2021-edition.html", "reporter": "Trellix", "references": [], "cvelist": ["CVE-2021-20322", "CVE-2021-3064", "CVE-2021-42114"], "immutableFields": [], "lastseen": "2021-11-30T00:00:00", "viewCount": 2, "enchantments": {"dependencies": {"references": [{"type": "almalinux", "idList": ["ALSA-2022:1988"]}, {"type": "amazon", "idList": ["ALAS-2022-1563", "ALAS-2023-1688"]}, {"type": "cisa", "idList": ["CISA:2E1039367836DF6C7F538F24709ABDFF"]}, {"type": "cloudfoundry", "idList": ["CFOUNDRY:BD43D191F1913B0416A737C28EAC643D"]}, {"type": "cve", "idList": ["CVE-2021-20322", "CVE-2021-3064", "CVE-2021-42114"]}, {"type": "debian", "idList": ["DEBIAN:DLA-2843-1:AB8E9", "DEBIAN:DLA-2941-1:96084", "DEBIAN:DSA-5096-1:B47F5"]}, {"type": "debiancve", "idList": ["DEBIANCVE:CVE-2021-20322"]}, {"type": "hivepro", "idList": ["HIVEPRO:28DAB1D4FF2A121B74937B923A1D44B9", "HIVEPRO:BED8EF5B5E2D49B945369D9DB342D717"]}, {"type": "ibm", "idList": ["185BBC212EB199C45233D6B9DC3039EA09F782A9A618E54D0204B7259290E45D", "B315A585CDBD4D516E60AAEBBA49CDD9274D016108F5F855F13CF2FE3AA0F562", "D504296C469FF402F73637F620D6BEA70BC5D37426BFD10EC06DDF72B6870292", "ED670677BEE7F824FAA4922AD08CFBF43478203FCCB636E589E6854737336228"]}, {"type": "nessus", "idList": ["AL2_ALASKERNEL-5_10-2022-006.NASL", "AL2_ALASKERNEL-5_4-2022-009.NASL", "ALA_ALAS-2022-1563.NASL", "ALA_ALAS-2023-1688.NASL", "ALMA_LINUX_ALSA-2022-1988.NASL", "DEBIAN_DLA-2843.NASL", "DEBIAN_DSA-5096.NASL", "EULEROS_SA-2021-2934.NASL", "EULEROS_SA-2022-1010.NASL", "EULEROS_SA-2022-1030.NASL", "EULEROS_SA-2022-1171.NASL", "EULEROS_SA-2022-1208.NASL", "EULEROS_SA-2022-1227.NASL", "EULEROS_SA-2022-1376.NASL", "EULEROS_SA-2022-1402.NASL", "OPENSUSE-2021-3876.NASL", "OPENSUSE-2021-3941.NASL", "ORACLELINUX_ELSA-2022-1988.NASL", "ORACLELINUX_ELSA-2022-9260.NASL", "ORACLEVM_OVMSA-2022-0011.NASL", "PALO_ALTO_CVE-2021-3064.NASL", "REDHAT-RHSA-2022-1975.NASL", "REDHAT-RHSA-2022-1988.NASL", "REDHAT-RHSA-2022-4829.NASL", "REDHAT-RHSA-2022-4835.NASL", "SUSE_SU-2021-3848-1.NASL", "SUSE_SU-2021-3876-1.NASL", "SUSE_SU-2021-3877-1.NASL", "SUSE_SU-2021-3929-1.NASL", "SUSE_SU-2021-3933-1.NASL", "SUSE_SU-2021-3935-1.NASL", "SUSE_SU-2021-3941-1.NASL", "SUSE_SU-2021-3969-1.NASL", "SUSE_SU-2021-3972-1.NASL", "SUSE_SU-2021-3978-1.NASL", "SUSE_SU-2021-3979-1.NASL", "SUSE_SU-2021-3992-1.NASL", "SUSE_SU-2021-4021-1.NASL", "SUSE_SU-2021-4038-1.NASL", "SUSE_SU-2021-4057-1.NASL", "SUSE_SU-2021-4075-1.NASL", "SUSE_SU-2021-4090-1.NASL", "SUSE_SU-2021-4099-1.NASL", "UBUNTU_USN-5268-1.NASL"]}, {"type": "oracle", "idList": ["ORACLE:CPUJUL2022"]}, {"type": "oraclelinux", "idList": ["ELSA-2022-1988", "ELSA-2022-9260"]}, {"type": "osv", "idList": ["OSV:DLA-2843-1", "OSV:DLA-2941-1", "OSV:DSA-5096-1"]}, {"type": "paloalto", "idList": ["PA-CVE-2021-3064"]}, {"type": "photon", "idList": ["PHSA-2021-3.0-0336", "PHSA-2022-0499"]}, {"type": "redhat", "idList": ["RHSA-2022:1975", "RHSA-2022:1988", "RHSA-2022:4814", "RHSA-2022:4829", "RHSA-2022:4835", "RHSA-2022:4956", "RHSA-2022:5201", "RHSA-2022:5392", "RHSA-2022:5483"]}, {"type": "redhatcve", "idList": ["RH:CVE-2021-20322", "RH:CVE-2021-42114"]}, {"type": "rocky", "idList": ["RLSA-2022:1975", "RLSA-2022:1988"]}, {"type": "suse", "idList": ["OPENSUSE-SU-2021:1501-1", "OPENSUSE-SU-2021:3806-1", "OPENSUSE-SU-2021:3876-1", "OPENSUSE-SU-2021:3941-1"]}, {"type": "thn", "idList": ["THN:115BB605995BDAD971C6060FB3E704ED", "THN:298741A588A0778E231480F6B8F871F6"]}, {"type": "threatpost", "idList": ["THREATPOST:03052371F383A20C440079DD064A666F", "THREATPOST:D203D198B6B3C197D6DDDA6027B4B3F9"]}, {"type": "ubuntu", "idList": ["USN-5268-1"]}, {"type": "ubuntucve", "idList": ["UB:CVE-2021-20322"]}, {"type": "veracode", "idList": ["VERACODE:34087"]}]}, "score": {"value": -0.4, "vector": "NONE"}, "epss": [{"cve": "CVE-2021-20322", "epss": "0.002270000", "percentile": "0.591710000", "modified": "2023-03-20"}, {"cve": "CVE-2021-3064", "epss": "0.001760000", "percentile": "0.530420000", "modified": "2023-03-20"}, {"cve": "CVE-2021-42114", "epss": "0.000580000", "percentile": "0.219430000", "modified": "2023-03-20"}], "vulnersScore": -0.4}, "_state": {"dependencies": 1677657868, "score": 1684017862, "epss": 1679361349}, "_internal": {"score_hash": "4c23c1bddb2a7428199b0d9d9a7a24a2"}}

{"thn": [{"lastseen": "2022-05-09T12:38:06", "description": "[![Blacksmith Rowhammer attack](https://thehackernews.com/new-images/img/a/AVvXsEjlwpNowBo55AqUqG4DUZzv1qencVPLqFlHDPs9JMpjeuiF3sOFrZQgz2v0tjoTJJioUH1X3eElV2uyrnn2IUVaOXxhe1QgUAPojSSxyJo6ashHmmRh3FOjHK9XhB_u5sAfJLzABOCG4Oqp9UBlidyhLHZHjPqFsTb5-zUXJjqH_pYj40dIJO45xPEd=s728-e1000)](<https://thehackernews.com/new-images/img/a/AVvXsEjlwpNowBo55AqUqG4DUZzv1qencVPLqFlHDPs9JMpjeuiF3sOFrZQgz2v0tjoTJJioUH1X3eElV2uyrnn2IUVaOXxhe1QgUAPojSSxyJo6ashHmmRh3FOjHK9XhB_u5sAfJLzABOCG4Oqp9UBlidyhLHZHjPqFsTb5-zUXJjqH_pYj40dIJO45xPEd>)\n\nCybersecurity researchers have demonstrated yet another variation of the Rowhammer attack affecting all [DRAM](<https://en.wikipedia.org/wiki/Dynamic_random-access_memory>) (dynamic random-access memory) chips that bypasses currently deployed mitigations, thereby effectively compromising the security of the devices.\n\nThe new technique \u2014 dubbed \"[Blacksmith](<https://comsec.ethz.ch/research/dram/blacksmith/>)\" ([CVE-2021-42114](<https://nvd.nist.gov/vuln/detail/CVE-2021-42114>), CVSS score: 9.0) \u2014 is designed to trigger bit flips on target refresh rate-enabled DRAM chips with the help of novel \"non-uniform and frequency-based\" memory access patterns, according to a study jointly published by academics from ETH Zurich, Vrije Universiteit Amsterdam, and Qualcomm Technologies.\n\nOriginally disclosed in 2014, [Rowhammer](<https://en.wikipedia.org/wiki/Row_hammer>) refers to a fundamental hardware vulnerability that could be abused to alter or corrupt memory contents by taking advantage of DRAM's tightly-packed, matrix-like memory cell architecture to repeatedly access certain rows (aka \"aggressors\") that induces an electrical disturbance large enough to cause the capacitors in neighbouring rows to leak charge faster and flip bits stored in the \"victim\" rows adjacent to them.\n\nA double-sided Rowhammer access pattern sandwiches a victim row in between two aggressor rows, maximizing the bit flips in the victim row. Another method called [Half-Double](<https://thehackernews.com/2021/05/google-researchers-discover-new-variant.html>), as established by Google researchers earlier this May, leverages the weak coupling between two memory rows that are not immediately adjacent to each other but one row removed to tamper with data stored in memory and, in principle, even gain unfettered access to the system.\n\nTo thwart attacks of this kind, modern memory modules come equipped with a dedicated in-memory defense mechanism called Target Row Refresh (TRR), which aims to detect the aggressor rows that are frequently accessed and refresh their neighbors before their charge leak results in data corruption, thus forestalling any possible bit flips.\n\nHowever, recent research such as [TRRespass](<https://thehackernews.com/2020/03/rowhammer-vulnerability-ddr4-dram.html>), [SMASH](<https://thehackernews.com/2021/04/new-javascript-exploit-can-now-carry.html>), and Half-Double have determined that TRR-based mitigations alone are insufficient to fully protect devices against Rowhammer attacks. Blacksmith is the latest work to join the list of methods that can completely circumvent TRR protections to activate bit errors on TRR-enabled DDR4 devices.\n\nThe [approach](<https://github.com/comsec-group/blacksmith>) involves conducting a series of experiments to identify complex \"non-uniform\" patterns in which different numbers of aggressor rows are hammered with different frequencies, phases and amplitudes that can still bypass TRR, with the study finding at least one pattern that triggered Rowhammer bit errors across 40 DDR4 devices from Samsung, Micron, SK Hynix, and an unnamed manufacturer.\n\nThat said, there might be a light at the end of the tunnel, what with TRR being replaced by a new line of defense called \"refresh management\" in DDR5 DRAM modules, a mechanism that \"keeps track of activations in a bank and issues selective refreshes to highly activated rows once a threshold has been reached.\"\n\n\"The tendency in DRAM manufacturing is to make the chips denser to pack more memory in the same size which inevitably results in increased interdependency between memory cells, making Rowhammer an ongoing problem,\" Google's open-source team said last week, alongside announcing what's called the [Rowhammer Tester platform](<https://opensource.googleblog.com/2021/11/Open%20source%20DDR%20controller%20framework%20for%20mitigating%20Rowhammer.html>) for \"experimenting with new types of attacks and finding better Rowhammer mitigation techniques.\"\n\n \n\n\nFound this article interesting? Follow THN on [Facebook](<https://www.facebook.com/thehackernews>), [Twitter _\uf099_](<https://twitter.com/thehackersnews>) and [LinkedIn](<https://www.linkedin.com/company/thehackernews/>) to read more exclusive content we post.\n", "cvss3": {"exploitabilityScore": 1.6, "cvssV3": {"baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "attackComplexity": "HIGH", "scope": "CHANGED", "attackVector": "ADJACENT_NETWORK", "availabilityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "baseScore": 8.3, "vectorString": "CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H", "version": "3.1", "userInteraction": "NONE"}, "impactScore": 6.0}, "published": "2021-11-16T16:48:00", "type": "thn", "title": "New Blacksmith Exploit Bypasses Current Rowhammer Attack Defenses", "bulletinFamily": "info", "cvss2": {"severity": "HIGH", "exploitabilityScore": 5.5, "obtainAllPrivilege": false, "userInteractionRequired": false, "obtainOtherPrivilege": false, "cvssV2": {"accessComplexity": "MEDIUM", "confidentialityImpact": "COMPLETE", "availabilityImpact": "COMPLETE", "integrityImpact": "COMPLETE", "baseScore": 7.9, "vectorString": "AV:A/AC:M/Au:N/C:C/I:C/A:C", "version": "2.0", "accessVector": "ADJACENT_NETWORK", "authentication": "NONE"}, "impactScore": 10.0, "acInsufInfo": false, "obtainUserPrivilege": false}, "cvelist": ["CVE-2021-42114"], "modified": "2021-11-16T16:48:41", "id": "THN:298741A588A0778E231480F6B8F871F6", "href": "https://thehackernews.com/2021/11/new-blacksmith-exploit-bypasses-current.html", "cvss": {"score": 7.9, "vector": "AV:A/AC:M/Au:N/C:C/I:C/A:C"}}, {"lastseen": "2022-05-09T12:38:07", "description": "[![](https://thehackernews.com/new-images/img/a/AVvXsEiCU-mHlg6ZefClFzjJz9LB8St0b20UtQjwgAWzr_XDVa1QawFHoi6IKxxhaCyyvBLc7IIvzdOtZLfSIvMMZcaqKalvv8EizyNDc-7EsHFvMc_bvG5ztqP23PI5l16iz6a6SbzLQC2cGj09XJQHhFfAYP1gQslPUVMAsmwYiYluUeYlJ_h92dXXCubc)](<https://thehackernews.com/new-images/img/a/AVvXsEiCU-mHlg6ZefClFzjJz9LB8St0b20UtQjwgAWzr_XDVa1QawFHoi6IKxxhaCyyvBLc7IIvzdOtZLfSIvMMZcaqKalvv8EizyNDc-7EsHFvMc_bvG5ztqP23PI5l16iz6a6SbzLQC2cGj09XJQHhFfAYP1gQslPUVMAsmwYiYluUeYlJ_h92dXXCubc>)\n\nA new zero-day vulnerability has been disclosed in Palo Alto Networks GlobalProtect VPN that could be abused by an unauthenticated network-based attacker to execute arbitrary code on affected devices with root user privileges.\n\nTracked as CVE-2021-3064 (CVSS score: 9.8), the security weakness impacts PAN-OS 8.1 versions earlier than PAN-OS 8.1.17. Massachusetts-based cybersecurity firm Randori has been credited with discovering and reporting the issue.\n\n\"The vulnerability chain consists of a method for bypassing validations made by an external web server (HTTP smuggling) and a stack-based buffer overflow,\" Randori researchers [said](<https://www.randori.com/blog/cve-2021-3064/>). \"Exploitation of the vulnerability chain has been proven and allows for remote code execution on both physical and virtual firewall products.\"\n\nHowever, in a troubling turn of events, the company said it used this exploit as part of its red team engagements for nearly 10 months before disclosing it to Palo Alto Networks in late September 2021. Technical details related to CVE-2021-3064 have been withheld for 30 days to prevent threat actors from abusing the vulnerability to stage real-world attacks.\n\n[![](https://thehackernews.com/new-images/img/a/AVvXsEilFMcajwZHFBEC8uB9M9A4I32c9yO3_wwVQ69PxZDPWv9jMnSPyvNoXzwgw31zCD1hkpcjyjrOmWJmP4b9M47x0zkmRNzjitk_2QbpDag22tHhgUZRGn-Clpjw2yOLyFBNgBc8GLhPMs4Ym4-13ScCGihUepRQGJL4N3Fxrj0t2u5nAEI2Q7Edis7Q)](<https://thehackernews.com/new-images/img/a/AVvXsEilFMcajwZHFBEC8uB9M9A4I32c9yO3_wwVQ69PxZDPWv9jMnSPyvNoXzwgw31zCD1hkpcjyjrOmWJmP4b9M47x0zkmRNzjitk_2QbpDag22tHhgUZRGn-Clpjw2yOLyFBNgBc8GLhPMs4Ym4-13ScCGihUepRQGJL4N3Fxrj0t2u5nAEI2Q7Edis7Q>)\n\nThe security bug stems from a buffer overflow that occurs while parsing user-supplied input. Successful exploitation of the flaw necessitates that the attacker strings it with a technique known as [HTTP smuggling](<https://thehackernews.com/2021/09/haproxy-found-vulnerable-to-critical.html>) to achieve remote code execution on the VPN installations, not to mention have network access to the device on the GlobalProtect service default port 443.\n\n\"A memory corruption vulnerability exists in Palo Alto Networks GlobalProtect portal and gateway interfaces that enables an unauthenticated network-based attacker to disrupt system processes and potentially execute arbitrary code with root privileges,\" Palo Alto Networks [said](<https://security.paloaltonetworks.com/CVE-2021-3064>) in an independent advisory. \"The attacker must have network access to the GlobalProtect interface to exploit this issue.\"\n\nIn light of the fact that VPN devices are [lucrative targets](<https://thehackernews.com/2021/06/north-korea-exploited-vpn-flaw-to-hack.html>) for malicious actors, it's highly recommended that users move quickly to patch the vulnerability. As a workaround, Palo Alto Networks is advising affected organizations to enable threat signatures for identifiers 91820 and 91855 on traffic destined for GlobalProtect portal and gateway interfaces to prevent any potential attacks against CVE-2021-3064.\n\n \n\n\nFound this article interesting? Follow THN on [Facebook](<https://www.facebook.com/thehackernews>), [Twitter _\uf099_](<https://twitter.com/thehackersnews>) and [LinkedIn](<https://www.linkedin.com/company/thehackernews/>) to read more exclusive content we post.\n", "cvss3": {"exploitabilityScore": 3.9, "cvssV3": {"baseSeverity": "CRITICAL", "confidentialityImpact": "HIGH", "attackComplexity": "LOW", "scope": "UNCHANGED", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "baseScore": 9.8, "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "version": "3.1", "userInteraction": "NONE"}, "impactScore": 5.9}, "published": "2021-11-11T06:35:00", "type": "thn", "title": "Palo Alto Warns of Zero-Day Bug in Firewalls Using GlobalProtect Portal VPN", "bulletinFamily": "info", "cvss2": {"severity": "HIGH", "exploitabilityScore": 10.0, "obtainAllPrivilege": false, "userInteractionRequired": false, "obtainOtherPrivilege": false, "cvssV2": {"accessComplexity": "LOW", "confidentialityImpact": "COMPLETE", "availabilityImpact": "COMPLETE", "integrityImpact": "COMPLETE", "baseScore": 10.0, "vectorString": "AV:N/AC:L/Au:N/C:C/I:C/A:C", "version": "2.0", "accessVector": "NETWORK", "authentication": "NONE"}, "impactScore": 10.0, "acInsufInfo": false, "obtainUserPrivilege": false}, "cvelist": ["CVE-2021-3064"], "modified": "2021-11-15T05:16:07", "id": "THN:115BB605995BDAD971C6060FB3E704ED", "href": "https://thehackernews.com/2021/11/palo-alto-warns-of-zero-day-bug-in.html", "cvss": {"score": 10.0, "vector": "AV:N/AC:L/Au:N/C:C/I:C/A:C"}}], "cve": [{"lastseen": "2023-05-23T15:45:56", "description": "Modern DRAM devices (PC-DDR4, LPDDR4X) are affected by a vulnerability in their internal Target Row Refresh (TRR) mitigation against Rowhammer attacks. Novel non-uniform Rowhammer access patterns, consisting of aggressors with different frequencies, phases, and amplitudes allow triggering bit flips on affected memory modules using our Blacksmith fuzzer. The patterns generated by Blacksmith were able to trigger bitflips on all 40 PC-DDR4 DRAM devices in our test pool, which cover the three major DRAM manufacturers: Samsung, SK Hynix, and Micron. This means that, even when chips advertised as Rowhammer-free are used, attackers may still be able to exploit Rowhammer. For example, this enables privilege-escalation attacks against the kernel or binaries such as the sudo binary, and also triggering bit flips in RSA-2048 keys (e.g., SSH keys) to gain cross-tenant virtual-machine access. We can confirm that DRAM devices acquired in July 2020 with DRAM chips from all three major DRAM vendors (Samsung, SK Hynix, Micron) are affected by this vulnerability. For more details, please refer to our publication.", "cvss3": {"exploitabilityScore": 1.6, "cvssV3": {"baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "attackComplexity": "HIGH", "scope": "CHANGED", "attackVector": "ADJACENT_NETWORK", "availabilityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "baseScore": 8.3, "vectorString": "CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H", "version": "3.1", "userInteraction": "NONE"}, "impactScore": 6.0}, "published": "2021-11-16T12:15:00", "type": "cve", "title": "CVE-2021-42114", "cwe": ["NVD-CWE-Other"], "bulletinFamily": "NVD", "cvss2": {"severity": "HIGH", "exploitabilityScore": 5.5, "obtainAllPrivilege": false, "userInteractionRequired": false, "obtainOtherPrivilege": false, "cvssV2": {"accessComplexity": "MEDIUM", "confidentialityImpact": "COMPLETE", "availabilityImpact": "COMPLETE", "integrityImpact": "COMPLETE", "baseScore": 7.9, "vectorString": "AV:A/AC:M/Au:N/C:C/I:C/A:C", "version": "2.0", "accessVector": "ADJACENT_NETWORK", "authentication": "NONE"}, "impactScore": 10.0, "acInsufInfo": false, "obtainUserPrivilege": false}, "cvelist": ["CVE-2021-42114"], "modified": "2021-11-29T18:45:00", "cpe": ["cpe:/o:samsung:ddr4_sdram_firmware:-", "cpe:/o:skhynix:ddr4_sdram_firmware:-", "cpe:/o:micron:lddr4_firmware:-", "cpe:/o:samsung:lddr4_firmware:-", "cpe:/o:skhynix:lddr4_firmware:-", "cpe:/o:micron:ddr4_sdram_firmware:-"], "id": "CVE-2021-42114", "href": "https://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2021-42114", "cvss": {"score": 7.9, "vector": "AV:A/AC:M/Au:N/C:C/I:C/A:C"}, "cpe23": ["cpe:2.3:o:samsung:lddr4_firmware:-:*:*:*:*:*:*:*", "cpe:2.3:o:micron:ddr4_sdram_firmware:-:*:*:*:*:*:*:*", "cpe:2.3:o:micron:lddr4_firmware:-:*:*:*:*:*:*:*", "cpe:2.3:o:skhynix:ddr4_sdram_firmware:-:*:*:*:*:*:*:*", "cpe:2.3:o:samsung:ddr4_sdram_firmware:-:*:*:*:*:*:*:*", "cpe:2.3:o:skhynix:lddr4_firmware:-:*:*:*:*:*:*:*"]}, {"lastseen": "2023-05-27T14:17:35", "description": "A flaw in the processing of received ICMP errors (ICMP fragment needed and ICMP redirect) in the Linux kernel functionality was found to allow the ability to quickly scan open UDP ports. This flaw allows an off-path remote user to effectively bypass the source port UDP randomization. The highest threat from this vulnerability is to confidentiality and possibly integrity, because software that relies on UDP source port randomization are indirectly affected as well.", "cvss3": {"exploitabilityScore": 2.2, "cvssV3": {"baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "attackComplexity": "HIGH", "scope": "UNCHANGED", "attackVector": "NETWORK", "availabilityImpact": "NONE", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "baseScore": 7.4, "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N", "version": "3.1", "userInteraction": "NONE"}, "impactScore": 5.2}, "published": "2022-02-18T18:15:00", "type": "cve", "title": "CVE-2021-20322", "cwe": ["CWE-330"], "bulletinFamily": "NVD", "cvss2": {"severity": "MEDIUM", "exploitabilityScore": 8.6, "obtainAllPrivilege": false, "userInteractionRequired": false, "obtainOtherPrivilege": false, "cvssV2": {"accessComplexity": "MEDIUM", "confidentialityImpact": "PARTIAL", "availabilityImpact": "NONE", "integrityImpact": "PARTIAL", "baseScore": 5.8, "vectorString": "AV:N/AC:M/Au:N/C:P/I:P/A:N", "version": "2.0", "accessVector": "NETWORK", "authentication": "NONE"}, "impactScore": 4.9, "acInsufInfo": false, "obtainUserPrivilege": false}, "cvelist": ["CVE-2021-20322"], "modified": "2022-07-28T09:39:00", "cpe": ["cpe:/o:netapp:baseboard_management_controller_h300e_firmware:-", "cpe:/a:netapp:active_iq_unified_manager:-", "cpe:/o:netapp:baseboard_management_controller_h300s_firmware:-", "cpe:/o:netapp:baseboard_management_controller_h700s_firmware:-", "cpe:/a:oracle:communications_cloud_native_core_policy:22.2.0", "cpe:/o:netapp:baseboard_management_controller_h500e_firmware:-", "cpe:/a:oracle:communications_cloud_native_core_binding_support_function:22.1.3", "cpe:/o:netapp:aff_a700s_firmware:-", "cpe:/o:debian:debian_linux:10.0", "cpe:/o:netapp:hci_compute_node_firmware:-", "cpe:/o:linux:linux_kernel:5.14.21", "cpe:/o:netapp:fas_baseboard_management_controller_firmware:-", "cpe:/a:netapp:solidfire\\,_enterprise_sds_\\&_hci_storage_node:-", "cpe:/o:netapp:baseboard_management_controller_h500s_firmware:-", "cpe:/o:netapp:baseboard_management_controller_h410s_firmware:-", "cpe:/a:netapp:e-series_santricity_os_controller:11.70.1", "cpe:/a:oracle:communications_cloud_native_core_network_exposure_function:22.1.1", "cpe:/o:netapp:aff_baseboard_management_controller_firmware:-", "cpe:/o:netapp:baseboard_management_controller_h700e_firmware:-", "cpe:/o:debian:debian_linux:9.0", "cpe:/a:netapp:solidfire_\\&_hci_management_node:-", "cpe:/o:fedoraproject:fedora:34"], "id": "CVE-2021-20322", "href": "https://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2021-20322", "cvss": {"score": 5.8, "vector": "AV:N/AC:M/Au:N/C:P/I:P/A:N"}, "cpe23": ["cpe:2.3:a:netapp:solidfire\\,_enterprise_sds_\\&_hci_storage_node:-:*:*:*:*:*:*:*", "cpe:2.3:o:netapp:aff_baseboard_management_controller_firmware:-:*:*:*:*:*:*:*", "cpe:2.3:a:oracle:communications_cloud_native_core_policy:22.2.0:*:*:*:*:*:*:*", "cpe:2.3:a:netapp:solidfire_\\&_hci_management_node:-:*:*:*:*:*:*:*", "cpe:2.3:o:netapp:baseboard_management_controller_h500e_firmware:-:*:*:*:*:*:*:*", "cpe:2.3:o:netapp:baseboard_management_controller_h500s_firmware:-:*:*:*:*:*:*:*", "cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*", "cpe:2.3:a:netapp:e-series_santricity_os_controller:11.70.1:*:*:*:*:*:*:*", "cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:*", "cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*", "cpe:2.3:a:oracle:communications_cloud_native_core_binding_support_function:22.1.3:*:*:*:*:*:*:*", "cpe:2.3:a:oracle:communications_cloud_native_core_network_exposure_function:22.1.1:*:*:*:*:*:*:*", "cpe:2.3:o:netapp:baseboard_management_controller_h300e_firmware:-:*:*:*:*:*:*:*", "cpe:2.3:o:netapp:baseboard_management_controller_h700s_firmware:-:*:*:*:*:*:*:*", "cpe:2.3:o:netapp:baseboard_management_controller_h700e_firmware:-:*:*:*:*:*:*:*", "cpe:2.3:a:netapp:active_iq_unified_manager:-:*:*:*:*:vmware_vsphere:*:*", "cpe:2.3:o:netapp:aff_a700s_firmware:-:*:*:*:*:*:*:*", "cpe:2.3:o:netapp:fas_baseboard_management_controller_firmware:-:*:*:*:*:*:*:*", "cpe:2.3:o:netapp:baseboard_management_controller_h410s_firmware:-:*:*:*:*:*:*:*", "cpe:2.3:o:netapp:baseboard_management_controller_h300s_firmware:-:*:*:*:*:*:*:*", "cpe:2.3:o:netapp:hci_compute_node_firmware:-:*:*:*:*:*:*:*", "cpe:2.3:o:linux:linux_kernel:5.14.21:*:*:*:*:*:*:*"]}, {"lastseen": "2023-05-27T14:40:44", "description": "A memory corruption vulnerability exists in Palo Alto Networks GlobalProtect portal and gateway interfaces that enables an unauthenticated network-based attacker to disrupt system processes and potentially execute arbitrary code with root privileges. The attacker must have network access to the GlobalProtect interface to exploit this issue. This issue impacts PAN-OS 8.1 versions earlier than PAN-OS 8.1.17. Prisma Access customers are not impacted by this issue.", "cvss3": {"exploitabilityScore": 3.9, "cvssV3": {"baseSeverity": "CRITICAL", "confidentialityImpact": "HIGH", "attackComplexity": "LOW", "scope": "UNCHANGED", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "baseScore": 9.8, "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "version": "3.1", "userInteraction": "NONE"}, "impactScore": 5.9}, "published": "2021-11-10T17:15:00", "type": "cve", "title": "CVE-2021-3064", "cwe": ["CWE-787"], "bulletinFamily": "NVD", "cvss2": {"severity": "HIGH", "exploitabilityScore": 10.0, "obtainAllPrivilege": false, "userInteractionRequired": false, "obtainOtherPrivilege": false, "cvssV2": {"accessComplexity": "LOW", "confidentialityImpact": "COMPLETE", "availabilityImpact": "COMPLETE", "integrityImpact": "COMPLETE", "baseScore": 10.0, "vectorString": "AV:N/AC:L/Au:N/C:C/I:C/A:C", "version": "2.0", "accessVector": "NETWORK", "authentication": "NONE"}, "impactScore": 10.0, "acInsufInfo": false, "obtainUserPrivilege": false}, "cvelist": ["CVE-2021-3064"], "modified": "2021-11-15T16:18:00", "cpe": [], "id": "CVE-2021-3064", "href": "https://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2021-3064", "cvss": {"score": 10.0, "vector": "AV:N/AC:L/Au:N/C:C/I:C/A:C"}, "cpe23": []}], "prion": [{"lastseen": "2023-08-16T07:41:06", "description": "Modern DRAM devices (PC-DDR4, LPDDR4X) are affected by a vulnerability in their internal Target Row Refresh (TRR) mitigation against Rowhammer attacks. Novel non-uniform Rowhammer access patterns, consisting of aggressors with different frequencies, phases, and amplitudes allow triggering bit flips on affected memory modules using our Blacksmith fuzzer. The patterns generated by Blacksmith were able to trigger bitflips on all 40 PC-DDR4 DRAM devices in our test pool, which cover the three major DRAM manufacturers: Samsung, SK Hynix, and Micron. This means that, even when chips advertised as Rowhammer-free are used, attackers may still be able to exploit Rowhammer. For example, this enables privilege-escalation attacks against the kernel or binaries such as the sudo binary, and also triggering bit flips in RSA-2048 keys (e.g., SSH keys) to gain cross-tenant virtual-machine access. We can confirm that DRAM devices acquired in July 2020 with DRAM chips from all three major DRAM vendors (Samsung, SK Hynix, Micron) are affected by this vulnerability. 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This flaw allows a user to crash the system or escalate their privileges. The highest threat from this vulnerability is to confidentiality, integrity, as well as system availability. (CVE-2021-3752)\n\n - A flaw use-after-free in function sco_sock_sendmsg() of the Linux kernel HCI subsystem was found in the way user calls ioct UFFDIO_REGISTER or other way triggers race condition of the call sco_conn_del() together with the call sco_sock_sendmsg() with the expected controllable faulting memory page. A privileged local user could use this flaw to crash the system or escalate their privileges on the system.\n (CVE-2021-3640)\n\n - A flaw in the processing of received ICMP errors (ICMP fragment needed and ICMP redirect) in the Linux kernel functionality was found to allow the ability to quickly scan open UDP ports. This flaw allows an off-path remote user to effectively bypass the source port UDP randomization. The highest threat from this vulnerability is to confidentiality and possibly integrity, because software that relies on UDP source port randomization are indirectly affected as well. (CVE-2021-20322)\n\n - The firewire subsystem in the Linux kernel through 5.14.13 has a buffer overflow related to drivers/media/firewire/firedtv-avc.c and drivers/media/firewire/firedtv-ci.c, because avc_ca_pmt mishandles bounds checking. 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pkgver) {\n if (ubuntu_check(osver:osver, pkgname:pkgname, pkgver:pkgver)) flag++;\n }\n}\n\nif (flag)\n{\n security_report_v4(\n port : 0,\n severity : SECURITY_HOLE,\n extra : ubuntu_report_get()\n );\n exit(0);\n}\nelse\n{\n var tested = ubuntu_pkg_tests_get();\n if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);\n else audit(AUDIT_PACKAGE_NOT_INSTALLED, 'linux-aws-cloud-tools-4.15.0-1119 / linux-aws-edge / etc');\n}\n", "cvss": {"score": 0.0, "vector": "NONE"}}, {"lastseen": "2023-05-18T14:44:26", "description": "The remote OracleVM system is missing necessary patches to address security updates:\n\n - An issue was discovered in the Linux kernel through 5.16.11. The mixed IPID assignment method with the hash-based IPID assignment policy allows an off-path attacker to inject data into a victim's TCP session or terminate that session. (CVE-2020-36516)\n\n - A flaw in the processing of received ICMP errors (ICMP fragment needed and ICMP redirect) in the Linux kernel functionality was found to allow the ability to quickly scan open UDP ports. This flaw allows an off-path remote user to effectively bypass the source port UDP randomization. The highest threat from this vulnerability is to confidentiality and possibly integrity, because software that relies on UDP source port randomization are indirectly affected as well. (CVE-2021-20322)\n\n - A flaw was found in the Linux SCTP stack. A blind attacker may be able to kill an existing SCTP association through invalid chunks if the attacker knows the IP-addresses and port numbers being used and the attacker can send packets with spoofed IP addresses. (CVE-2021-3772)\n\n - A random memory access flaw was found in the Linux kernel's GPU i915 kernel driver functionality in the way a user may run malicious code on the GPU. This flaw allows a local user to crash the system or escalate their privileges on the system. (CVE-2022-0330)\n\n - An issue was discovered in the Linux kernel before 5.16.12. drivers/net/usb/sr9700.c allows attackers to obtain sensitive information from heap memory via crafted frame lengths from a device. (CVE-2022-26966)\n\nNote that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.", "cvss3": {}, "published": "2022-04-05T00:00:00", "type": "nessus", "title": "OracleVM 3.4 : kernel-uek (OVMSA-2022-0011)", "bulletinFamily": "scanner", "cvss2": {}, "cvelist": ["CVE-2020-36516", "CVE-2021-20322", "CVE-2021-3772", "CVE-2022-0330", "CVE-2022-26966"], "modified": "2022-05-06T00:00:00", "cpe": ["p-cpe:/a:oracle:vm:kernel-uek", "p-cpe:/a:oracle:vm:kernel-uek-firmware", "cpe:/o:oracle:vm_server:3.4"], "id": "ORACLEVM_OVMSA-2022-0011.NASL", "href": "https://www.tenable.com/plugins/nessus/159525", "sourceData": "#%NASL_MIN_LEVEL 70300\n##\n# (C) Tenable, Inc.\n#\n# The package checks in this plugin were\n# extracted from OracleVM Security Advisory OVMSA-2022-0011.\n##\n\ninclude('deprecated_nasl_level.inc');\ninclude('compat.inc');\n\nif (description)\n{\n script_id(159525);\n script_version(\"1.3\");\n script_set_attribute(attribute:\"plugin_modification_date\", value:\"2022/05/06\");\n\n script_cve_id(\n \"CVE-2020-36516\",\n \"CVE-2021-3772\",\n \"CVE-2021-20322\",\n \"CVE-2022-0330\",\n \"CVE-2022-26966\"\n );\n\n script_name(english:\"OracleVM 3.4 : kernel-uek (OVMSA-2022-0011)\");\n\n script_set_attribute(attribute:\"synopsis\", value:\n\"The remote OracleVM host is missing one or more security updates.\");\n script_set_attribute(attribute:\"description\", value:\n\"The remote OracleVM system is missing necessary patches to address security updates:\n\n - An issue was discovered in the Linux kernel through 5.16.11. 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Tenable has attempted to automatically clean and format it as much as possible without introducing additional\nissues.\");\n # https://developer.huaweicloud.com/ict/en/site-euleros/euleros/security-advisories/EulerOS-SA-2022-1376\n script_set_attribute(attribute:\"see_also\", value:\"http://www.nessus.org/u?1fdb058e\");\n script_set_attribute(attribute:\"solution\", value:\n\"Update the affected kernel packages.\");\n script_set_cvss_base_vector(\"CVSS2#AV:A/AC:M/Au:N/C:C/I:C/A:C\");\n script_set_cvss_temporal_vector(\"CVSS2#E:F/RL:OF/RC:C\");\n script_set_cvss3_base_vector(\"CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H\");\n script_set_cvss3_temporal_vector(\"CVSS:3.0/E:F/RL:O/RC:C\");\n script_set_attribute(attribute:\"cvss_score_source\", value:\"CVE-2021-3752\");\n script_set_attribute(attribute:\"cvss3_score_source\", value:\"CVE-2021-41864\");\n\n script_set_attribute(attribute:\"exploitability_ease\", value:\"Exploits are available\");\n script_set_attribute(attribute:\"exploit_available\", value:\"true\");\n\n script_set_attribute(attribute:\"vuln_publication_date\", value:\"2019/09/06\");\n script_set_attribute(attribute:\"patch_publication_date\", value:\"2022/04/13\");\n script_set_attribute(attribute:\"plugin_publication_date\", value:\"2022/04/18\");\n\n script_set_attribute(attribute:\"plugin_type\", value:\"local\");\n script_set_attribute(attribute:\"cpe\", value:\"p-cpe:/a:huawei:euleros:kernel\");\n script_set_attribute(attribute:\"cpe\", value:\"p-cpe:/a:huawei:euleros:kernel-abi-stablelists\");\n script_set_attribute(attribute:\"cpe\", value:\"p-cpe:/a:huawei:euleros:kernel-tools\");\n script_set_attribute(attribute:\"cpe\", value:\"p-cpe:/a:huawei:euleros:kernel-tools-libs\");\n script_set_attribute(attribute:\"cpe\", value:\"p-cpe:/a:huawei:euleros:python3-perf\");\n script_set_attribute(attribute:\"cpe\", value:\"cpe:/o:huawei:euleros:uvp:2.10.1\");\n script_end_attributes();\n\n script_category(ACT_GATHER_INFO);\n script_family(english:\"Huawei Local Security Checks\");\n\n script_copyright(english:\"This script is Copyright (C) 2022-2023 and is owned by Tenable, Inc. or an Affiliate thereof.\");\n\n script_dependencies(\"ssh_get_info.nasl\");\n script_require_keys(\"Host/local_checks_enabled\", \"Host/cpu\", \"Host/EulerOS/release\", \"Host/EulerOS/rpm-list\", \"Host/EulerOS/uvp_version\");\n\n exit(0);\n}\n\ninclude(\"rpm.inc\");\n\nif (!get_kb_item(\"Host/local_checks_enabled\")) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);\n\nvar release = get_kb_item(\"Host/EulerOS/release\");\nif (isnull(release) || release !~ \"^EulerOS\") audit(AUDIT_OS_NOT, \"EulerOS\");\nvar uvp = get_kb_item(\"Host/EulerOS/uvp_version\");\nif (uvp != \"2.10.1\") audit(AUDIT_OS_NOT, \"EulerOS Virtualization 2.10.1\");\nif (!get_kb_item(\"Host/EulerOS/rpm-list\")) audit(AUDIT_PACKAGE_LIST_MISSING);\n\nvar cpu = get_kb_item(\"Host/cpu\");\nif (isnull(cpu)) audit(AUDIT_UNKNOWN_ARCH);\nif (\"x86_64\" >!< cpu && cpu !~ \"^i[3-6]86$\" && \"aarch64\" >!< cpu) audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, \"EulerOS\", cpu);\nif (\"aarch64\" >!< cpu) audit(AUDIT_ARCH_NOT, \"aarch64\", cpu);\n\nvar flag = 0;\n\nvar pkgs = [\n \"kernel-4.19.90-vhulk2111.1.0.h963.eulerosv2r10\",\n \"kernel-abi-stablelists-4.19.90-vhulk2111.1.0.h963.eulerosv2r10\",\n \"kernel-tools-4.19.90-vhulk2111.1.0.h963.eulerosv2r10\",\n \"kernel-tools-libs-4.19.90-vhulk2111.1.0.h963.eulerosv2r10\",\n \"python3-perf-4.19.90-vhulk2111.1.0.h963.eulerosv2r10\"\n];\n\nforeach (var pkg in pkgs)\n if (rpm_check(release:\"EulerOS-2.0\", reference:pkg)) flag++;\n\nif (flag)\n{\n security_report_v4(\n port : 0,\n severity : SECURITY_HOLE,\n extra : rpm_report_get()\n );\n exit(0);\n}\nelse\n{\n var tested = pkg_tests_get();\n if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);\n else audit(AUDIT_PACKAGE_NOT_INSTALLED, \"kernel\");\n}\n", "cvss": {"score": 0.0, "vector": "NONE"}}, {"lastseen": "2023-05-18T15:36:36", "description": "The remote Debian 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the dla-2843 advisory.\n\n - Use-after-free vulnerability in the Linux kernel exploitable by a local attacker due to reuse of a DCCP socket with an attached dccps_hc_tx_ccid object as a listener after being released. Fixed in Ubuntu Linux kernel 5.4.0-51.56, 5.3.0-68.63, 4.15.0-121.123, 4.4.0-193.224, 3.13.0.182.191 and 3.2.0-149.196.\n (CVE-2020-16119)\n\n - u'Specifically timed and handcrafted traffic can cause internal errors in a WLAN device that lead to improper layer 2 Wi-Fi encryption with a consequent possibility of information disclosure over the air for a discrete set of traffic' in Snapdragon Auto, Snapdragon Compute, Snapdragon Connectivity, Snapdragon Consumer IOT, Snapdragon Industrial IOT, Snapdragon Mobile, Snapdragon Voice & Music, Snapdragon Wearables, Snapdragon Wired Infrastructure and Networking in APQ8053, IPQ4019, IPQ8064, MSM8909W, MSM8996AU, QCA9531, QCN5502, QCS405, SDX20, SM6150, SM7150 (CVE-2020-3702)\n\n - In unix_scm_to_skb of af_unix.c, there is a possible use after free bug due to a race condition. This could lead to local escalation of privilege with System execution privileges needed. User interaction is not needed for exploitation.Product: AndroidVersions: Android kernelAndroid ID: A-196926917References:\n Upstream kernel (CVE-2021-0920)\n\n - A flaw was found in the Linux kernel. A corrupted timer tree caused the task wakeup to be missing in the timerqueue_add function in lib/timerqueue.c. This flaw allows a local attacker with special user privileges to cause a denial of service, slowing and eventually stopping the system while running OSP.\n (CVE-2021-20317)\n\n - An issue was discovered in Linux: KVM through Improper handling of VM_IO|VM_PFNMAP vmas in KVM can bypass RO checks and can lead to pages being freed while still accessible by the VMM and guest. This allows users with the ability to start and control a VM to read/write random pages of memory and can result in local privilege escalation. (CVE-2021-22543)\n\n - An out-of-bounds memory write flaw was found in the Linux kernel's joystick devices subsystem in versions before 5.9-rc1, in the way the user calls ioctl JSIOCSBTNMAP. This flaw allows a local user to crash the system or possibly escalate their privileges on the system. The highest threat from this vulnerability is to confidentiality, integrity, as well as system availability. (CVE-2021-3612)\n\n - A flaw was found in the KVM's AMD code for supporting SVM nested virtualization. The flaw occurs when processing the VMCB (virtual machine control block) provided by the L1 guest to spawn/handle a nested guest (L2). Due to improper validation of the int_ctl field, this issue could allow a malicious L1 to enable AVIC support (Advanced Virtual Interrupt Controller) for the L2 guest. As a result, the L2 guest would be allowed to read/write physical pages of the host, resulting in a crash of the entire system, leak of sensitive data or potential guest-to-host escape. This flaw affects Linux kernel versions prior to 5.14-rc7. (CVE-2021-3653)\n\n - A vulnerability was found in the Linux kernel in versions prior to v5.14-rc1. Missing size validations on inbound SCTP packets may allow the kernel to read uninitialized memory. (CVE-2021-3655)\n\n - A lack of CPU resource in the Linux kernel tracing module functionality in versions prior to 5.14-rc3 was found in the way user uses trace ring buffer in a specific way. Only privileged local users (with CAP_SYS_ADMIN capability) could use this flaw to starve the resources causing denial of service.\n (CVE-2021-3679)\n\n - hso_free_net_device in drivers/net/usb/hso.c in the Linux kernel through 5.13.4 calls unregister_netdev without checking for the NETREG_REGISTERED state, leading to a use-after-free and a double free.\n (CVE-2021-37159)\n\n - ** DISPUTED ** In drivers/char/virtio_console.c in the Linux kernel before 5.13.4, data corruption or loss can be triggered by an untrusted device that supplies a buf->len value exceeding the buffer size. NOTE:\n the vendor indicates that the cited data corruption is not a vulnerability in any existing use case; the length validation was added solely for robustness in the face of anomalous host OS behavior.\n (CVE-2021-38160)\n\n - arch/x86/kvm/mmu/paging_tmpl.h in the Linux kernel before 5.12.11 incorrectly computes the access permissions of a shadow page, leading to a missing guest protection page fault. (CVE-2021-38198)\n\n - fs/nfs/nfs4client.c in the Linux kernel before 5.13.4 has incorrect connection-setup ordering, which allows operators of remote NFSv4 servers to cause a denial of service (hanging of mounts) by arranging for those servers to be unreachable during trunking detection. (CVE-2021-38199)\n\n - inflect is vulnerable to Inefficient Regular Expression Complexity (CVE-2021-3820)\n\n - drivers/usb/host/max3421-hcd.c in the Linux kernel before 5.13.6 allows physically proximate attackers to cause a denial of service (use-after-free and panic) by removing a MAX-3421 USB device in certain situations. (CVE-2021-38204)\n\n - drivers/net/ethernet/xilinx/xilinx_emaclite.c in the Linux kernel before 5.13.3 makes it easier for attackers to defeat an ASLR protection mechanism because it prints a kernel pointer (i.e., the real IOMEM pointer). (CVE-2021-38205)\n\n - A race condition was discovered in ext4_write_inline_data_end in fs/ext4/inline.c in the ext4 subsystem in the Linux kernel through 5.13.13. (CVE-2021-40490)\n\n - prealloc_elems_and_freelist in kernel/bpf/stackmap.c in the Linux kernel through 5.14.9 allows unprivileged users to trigger an eBPF multiplication integer overflow with a resultant out-of-bounds write. (CVE-2021-41864)\n\n - The decode_data function in drivers/net/hamradio/6pack.c in the Linux kernel before 5.13.13 has a slab out-of-bounds write. Input from a process that has the CAP_NET_ADMIN capability can lead to root access.\n (CVE-2021-42008)\n\n - The firewire subsystem in the Linux kernel through 5.14.13 has a buffer overflow related to drivers/media/firewire/firedtv-avc.c and drivers/media/firewire/firedtv-ci.c, because avc_ca_pmt mishandles bounds checking. (CVE-2021-42739)\n\n - An issue was discovered in the Linux kernel before 5.14.15. 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Fixed in Ubuntu Linux\n kernel 5.4.0-51.56, 5.3.0-68.63, 4.15.0-121.123, 4.4.0-193.224, 3.13.0.182.191 and 3.2.0-149.196.\n (CVE-2020-16119)\n\n - u'Specifically timed and handcrafted traffic can cause internal errors in a WLAN device that lead to\n improper layer 2 Wi-Fi encryption with a consequent possibility of information disclosure over the air for\n a discrete set of traffic' in Snapdragon Auto, Snapdragon Compute, Snapdragon Connectivity, Snapdragon\n Consumer IOT, Snapdragon Industrial IOT, Snapdragon Mobile, Snapdragon Voice & Music, Snapdragon\n Wearables, Snapdragon Wired Infrastructure and Networking in APQ8053, IPQ4019, IPQ8064, MSM8909W,\n MSM8996AU, QCA9531, QCN5502, QCS405, SDX20, SM6150, SM7150 (CVE-2020-3702)\n\n - In unix_scm_to_skb of af_unix.c, there is a possible use after free bug due to a race condition. This\n could lead to local escalation of privilege with System execution privileges needed. User interaction is\n not needed for exploitation.Product: AndroidVersions: Android kernelAndroid ID: A-196926917References:\n Upstream kernel (CVE-2021-0920)\n\n - A flaw was found in the Linux kernel. A corrupted timer tree caused the task wakeup to be missing in the\n timerqueue_add function in lib/timerqueue.c. This flaw allows a local attacker with special user\n privileges to cause a denial of service, slowing and eventually stopping the system while running OSP.\n (CVE-2021-20317)\n\n - An issue was discovered in Linux: KVM through Improper handling of VM_IO|VM_PFNMAP vmas in KVM can bypass\n RO checks and can lead to pages being freed while still accessible by the VMM and guest. This allows users\n with the ability to start and control a VM to read/write random pages of memory and can result in local\n privilege escalation. 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Only privileged local users (with\n CAP_SYS_ADMIN capability) could use this flaw to starve the resources causing denial of service.\n (CVE-2021-3679)\n\n - hso_free_net_device in drivers/net/usb/hso.c in the Linux kernel through 5.13.4 calls unregister_netdev\n without checking for the NETREG_REGISTERED state, leading to a use-after-free and a double free.\n (CVE-2021-37159)\n\n - ** DISPUTED ** In drivers/char/virtio_console.c in the Linux kernel before 5.13.4, data corruption or loss\n can be triggered by an untrusted device that supplies a buf->len value exceeding the buffer size. 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'kernel-rt / kernel-rt-core / kernel-rt-debug / kernel-rt-debug-core / etc');\n}\n", "cvss": {"score": 0.0, "vector": "NONE"}}, {"lastseen": "2023-08-13T16:38:58", "description": "The remote SUSE Linux SLES12 host has packages installed that are affected by multiple vulnerabilities as referenced in the SUSE-SU-2021:3929-1 advisory.\n\n - Systems with microprocessors utilizing speculative execution and branch prediction may allow unauthorized disclosure of information to an attacker with local user access via a side-channel analysis.\n (CVE-2017-5753)\n\n - The inode_init_owner function in fs/inode.c in the Linux kernel through 3.16 allows local users to create files with an unintended group ownership, in a scenario where a directory is SGID to a certain group and is writable by a user who is not a member of that group. Here, the non-member can trigger creation of a plain file whose group ownership is that group. The intended behavior was that the non-member can trigger creation of a directory (but not a plain file) whose group ownership is that group. The non-member can escalate privileges by making the plain file executable and SGID. (CVE-2018-13405)\n\n - A use-after-free issue was found in the way the Linux kernel's KVM hypervisor processed posted interrupts when nested(=1) virtualization is enabled. In nested_get_vmcs12_pages(), in case of an error while processing posted interrupt address, it unmaps the 'pi_desc_page' without resetting 'pi_desc' descriptor address, which is later used in pi_test_and_clear_on(). A guest user/process could use this flaw to crash the host kernel resulting in DoS or potentially gain privileged access to a system. Kernel versions before 4.14.91 and before 4.19.13 are vulnerable. (CVE-2018-16882)\n\n - In l2tp_session_delete and related functions of l2tp_core.c, there is possible memory corruption due to a use after free. This could lead to local escalation of privilege with System execution privileges needed.\n User interaction is not needed for exploitation.Product: AndroidVersions: Android kernelAndroid ID:\n A-152735806 (CVE-2020-0429)\n\n - An issue was discovered in xfs_agf_verify in fs/xfs/libxfs/xfs_alloc.c in the Linux kernel through 5.6.10.\n Attackers may trigger a sync of excessive duration via an XFS v5 image with crafted metadata, aka CID-d0c7feaf8767. (CVE-2020-12655)\n\n - An out-of-bounds memory write flaw was found in how the Linux kernel's Voice Over IP H.323 connection tracking functionality handled connections on ipv6 port 1720. This flaw allows an unauthenticated remote user to crash the system, causing a denial of service. The highest threat from this vulnerability is to confidentiality, integrity, as well as system availability. (CVE-2020-14305)\n\n - u'Specifically timed and handcrafted traffic can cause internal errors in a WLAN device that lead to improper layer 2 Wi-Fi encryption with a consequent possibility of information disclosure over the air for a discrete set of traffic' in Snapdragon Auto, Snapdragon Compute, Snapdragon Connectivity, Snapdragon Consumer IOT, Snapdragon Industrial IOT, Snapdragon Mobile, Snapdragon Voice & Music, Snapdragon Wearables, Snapdragon Wired Infrastructure and Networking in APQ8053, IPQ4019, IPQ8064, MSM8909W, MSM8996AU, QCA9531, QCN5502, QCS405, SDX20, SM6150, SM7150 (CVE-2020-3702)\n\n - A flaw was found in the way memory resources were freed in the unix_stream_recvmsg function in the Linux kernel when a signal was pending. This flaw allows an unprivileged local user to crash the system by exhausting available memory. The highest threat from this vulnerability is to system availability.\n (CVE-2021-20265)\n\n - A flaw in the processing of received ICMP errors (ICMP fragment needed and ICMP redirect) in the Linux kernel functionality was found to allow the ability to quickly scan open UDP ports. This flaw allows an off-path remote user to effectively bypass the source port UDP randomization. The highest threat from this vulnerability is to confidentiality and possibly integrity, because software that relies on UDP source port randomization are indirectly affected as well. (CVE-2021-20322)\n\n - An out-of-bounds (OOB) memory write flaw was found in list_devices in drivers/md/dm-ioctl.c in the Multi- device driver module in the Linux kernel before 5.12. A bound check failure allows an attacker with special user (CAP_SYS_ADMIN) privilege to gain access to out-of-bounds memory leading to a system crash or a leak of internal kernel information. The highest threat from this vulnerability is to system availability. (CVE-2021-31916)\n\n - The Linux kernel before 5.11.14 has a use-after-free in cipso_v4_genopt in net/ipv4/cipso_ipv4.c because the CIPSO and CALIPSO refcounting for the DOI definitions is mishandled, aka CID-ad5d07f4a9cd. This leads to writing an arbitrary value. (CVE-2021-33033)\n\n - In the Linux kernel through 5.13.7, an unprivileged BPF program can obtain sensitive information from kernel memory via a Speculative Store Bypass side-channel attack because the protection mechanism neglects the possibility of uninitialized memory locations on the BPF stack. (CVE-2021-34556)\n\n - A flaw was found in the Linux kernel's CAPI over Bluetooth connection code. An attacker with a local account can escalate privileges when CAPI (ISDN) hardware connection fails. (CVE-2021-34981)\n\n - In the Linux kernel through 5.13.7, an unprivileged BPF program can obtain sensitive information from kernel memory via a Speculative Store Bypass side-channel attack because a certain preempting store operation does not necessarily occur before a store operation that has an attacker-controlled value.\n (CVE-2021-35477)\n\n - A flaw use-after-free in function sco_sock_sendmsg() of the Linux kernel HCI subsystem was found in the way user calls ioct UFFDIO_REGISTER or other way triggers race condition of the call sco_conn_del() together with the call sco_sock_sendmsg() with the expected controllable faulting memory page. A privileged local user could use this flaw to crash the system or escalate their privileges on the system.\n (CVE-2021-3640)\n\n - A flaw was found in the KVM's AMD code for supporting SVM nested virtualization. The flaw occurs when processing the VMCB (virtual machine control block) provided by the L1 guest to spawn/handle a nested guest (L2). Due to improper validation of the int_ctl field, this issue could allow a malicious L1 to enable AVIC support (Advanced Virtual Interrupt Controller) for the L2 guest. As a result, the L2 guest would be allowed to read/write physical pages of the host, resulting in a crash of the entire system, leak of sensitive data or potential guest-to-host escape. This flaw affects Linux kernel versions prior to 5.14-rc7. (CVE-2021-3653)\n\n - A vulnerability was found in the Linux kernel in versions prior to v5.14-rc1. Missing size validations on inbound SCTP packets may allow the kernel to read uninitialized memory. (CVE-2021-3655)\n\n - A NULL pointer dereference flaw was found in the Linux kernel's IEEE 802.15.4 wireless networking subsystem in the way the user closes the LR-WPAN connection. This flaw allows a local user to crash the system. The highest threat from this vulnerability is to system availability. (CVE-2021-3659)\n\n - A lack of CPU resource in the Linux kernel tracing module functionality in versions prior to 5.14-rc3 was found in the way user uses trace ring buffer in a specific way. Only privileged local users (with CAP_SYS_ADMIN capability) could use this flaw to starve the resources causing denial of service.\n (CVE-2021-3679)\n\n - A flaw was found in the Routing decision classifier in the Linux kernel's Traffic Control networking subsystem in the way it handled changing of classification filters, leading to a use-after-free condition.\n This flaw allows unprivileged local users to escalate their privileges on the system. The highest threat from this vulnerability is to confidentiality, integrity, as well as system availability. (CVE-2021-3715)\n\n - hso_free_net_device in drivers/net/usb/hso.c in the Linux kernel through 5.13.4 calls unregister_netdev without checking for the NETREG_REGISTERED state, leading to a use-after-free and a double free.\n (CVE-2021-37159)\n\n - A flaw was found in the Linux kernel's OverlayFS subsystem in the way the user mounts the TmpFS filesystem with OverlayFS. This flaw allows a local user to gain access to hidden files that should not be accessible. (CVE-2021-3732)\n\n - A use-after-free flaw was found in the Linux kernel's Bluetooth subsystem in the way user calls connect to the socket and disconnect simultaneously due to a race condition. This flaw allows a user to crash the system or escalate their privileges. The highest threat from this vulnerability is to confidentiality, integrity, as well as system availability. (CVE-2021-3752)\n\n - A race problem was seen in the vt_k_ioctl in drivers/tty/vt/vt_ioctl.c in the Linux kernel, which may cause an out of bounds read in vt as the write access to vc_mode is not protected by lock-in vt_ioctl (KDSETMDE). The highest threat from this vulnerability is to data confidentiality. (CVE-2021-3753)\n\n - arch/powerpc/kvm/book3s_rtas.c in the Linux kernel through 5.13.5 on the powerpc platform allows KVM guest OS users to cause host OS memory corruption via rtas_args.nargs, aka CID-f62f3c20647e. (CVE-2021-37576)\n\n - A flaw was found in the Linux kernel. A use-after-free vulnerability in the NFC stack can lead to a threat to confidentiality, integrity, and system availability. (CVE-2021-3760)\n\n - A flaw was found in the Linux SCTP stack. A blind attacker may be able to kill an existing SCTP association through invalid chunks if the attacker knows the IP-addresses and port numbers being used and the attacker can send packets with spoofed IP addresses. (CVE-2021-3772)\n\n - ** DISPUTED ** In drivers/char/virtio_console.c in the Linux kernel before 5.13.4, data corruption or loss can be triggered by an untrusted device that supplies a buf->len value exceeding the buffer size. NOTE:\n the vendor indicates that the cited data corruption is not a vulnerability in any existing use case; the length validation was added solely for robustness in the face of anomalous host OS behavior.\n (CVE-2021-38160)\n\n - arch/x86/kvm/mmu/paging_tmpl.h in the Linux kernel before 5.12.11 incorrectly computes the access permissions of a shadow page, leading to a missing guest protection page fault. (CVE-2021-38198)\n\n - drivers/usb/host/max3421-hcd.c in the Linux kernel before 5.13.6 allows physically proximate attackers to cause a denial of service (use-after-free and panic) by removing a MAX-3421 USB device in certain situations. (CVE-2021-38204)\n\n - A race condition was discovered in ext4_write_inline_data_end in fs/ext4/inline.c in the ext4 subsystem in the Linux kernel through 5.13.13. (CVE-2021-40490)\n\n - The decode_data function in drivers/net/hamradio/6pack.c in the Linux kernel before 5.13.13 has a slab out-of-bounds write. Input from a process that has the CAP_NET_ADMIN capability can lead to root access.\n (CVE-2021-42008)\n\n - A heap-based buffer overflow flaw was found in the Linux kernel FireDTV media card driver, where the user calls the CA_SEND_MSG ioctl. This flaw allows a local user of the host machine to crash the system or escalate privileges on the system. The highest threat from this vulnerability is to confidentiality, integrity, as well as system availability. (CVE-2021-42739)\n\n - An issue was discovered in the Linux kernel before 5.14.15. There is an array-index-out-of-bounds flaw in the detach_capi_ctr function in drivers/isdn/capi/kcapi.c. (CVE-2021-43389)\n\nNote that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.", "cvss3": {}, "published": "2021-12-07T00:00:00", "type": "nessus", "title": "SUSE SLES12 Security Update : kernel (SUSE-SU-2021:3929-1)", "bulletinFamily": "scanner", "cvss2": {}, "cvelist": ["CVE-2017-5753", "CVE-2018-13405", "CVE-2018-16882", "CVE-2020-0429", "CVE-2020-12655", "CVE-2020-14305", "CVE-2020-3702", "CVE-2021-20265", "CVE-2021-20322", "CVE-2021-31916", "CVE-2021-33033", "CVE-2021-34556", "CVE-2021-34981", "CVE-2021-3542", "CVE-2021-35477", "CVE-2021-3640", "CVE-2021-3653", "CVE-2021-3655", "CVE-2021-3659", "CVE-2021-3679", "CVE-2021-3715", "CVE-2021-37159", "CVE-2021-3732", "CVE-2021-3752", "CVE-2021-3753", "CVE-2021-37576", "CVE-2021-3760", "CVE-2021-3772", "CVE-2021-38160", "CVE-2021-38198", "CVE-2021-38204", "CVE-2021-3896", "CVE-2021-40490", "CVE-2021-42008", "CVE-2021-42739", "CVE-2021-43389"], "modified": "2023-08-11T00:00:00", "cpe": ["p-cpe:/a:novell:suse_linux:kernel-default", "p-cpe:/a:novell:suse_linux:kernel-default-base", "p-cpe:/a:novell:suse_linux:kernel-default-devel", "p-cpe:/a:novell:suse_linux:kernel-devel", "p-cpe:/a:novell:suse_linux:kernel-macros", "p-cpe:/a:novell:suse_linux:kernel-source", "p-cpe:/a:novell:suse_linux:kernel-syms", "cpe:/o:novell:suse_linux:12"], "id": "SUSE_SU-2021-3929-1.NASL", "href": "https://www.tenable.com/plugins/nessus/155910", "sourceData": "#%NASL_MIN_LEVEL 70300\n##\n# (C) Tenable, Inc.\n#\n# The package checks in this plugin were extracted from\n# SUSE update advisory SUSE-SU-2021:3929-1. The text itself\n# is copyright (C) SUSE.\n##\n\ninclude('deprecated_nasl_level.inc');\ninclude('compat.inc');\n\nif (description)\n{\n script_id(155910);\n script_version(\"1.6\");\n script_set_attribute(attribute:\"plugin_modification_date\", value:\"2023/08/11\");\n\n script_cve_id(\n \"CVE-2017-5753\",\n \"CVE-2018-13405\",\n \"CVE-2018-16882\",\n \"CVE-2020-0429\",\n \"CVE-2020-3702\",\n \"CVE-2020-12655\",\n \"CVE-2020-14305\",\n \"CVE-2021-3542\",\n \"CVE-2021-3640\",\n \"CVE-2021-3653\",\n \"CVE-2021-3655\",\n \"CVE-2021-3659\",\n \"CVE-2021-3679\",\n \"CVE-2021-3715\",\n \"CVE-2021-3732\",\n \"CVE-2021-3752\",\n \"CVE-2021-3753\",\n \"CVE-2021-3760\",\n \"CVE-2021-3772\",\n \"CVE-2021-3896\",\n \"CVE-2021-20265\",\n \"CVE-2021-20322\",\n \"CVE-2021-31916\",\n \"CVE-2021-33033\",\n \"CVE-2021-34556\",\n \"CVE-2021-34981\",\n \"CVE-2021-35477\",\n \"CVE-2021-37159\",\n \"CVE-2021-37576\",\n \"CVE-2021-38160\",\n \"CVE-2021-38198\",\n \"CVE-2021-38204\",\n \"CVE-2021-40490\",\n \"CVE-2021-42008\",\n \"CVE-2021-42739\",\n \"CVE-2021-43389\"\n );\n script_xref(name:\"IAVA\", value:\"2018-A-0020\");\n script_xref(name:\"IAVA\", value:\"2017-A-0345-S\");\n script_xref(name:\"IAVA\", value:\"2018-A-0022-S\");\n script_xref(name:\"IAVA\", value:\"2017-A-0347-S\");\n script_xref(name:\"IAVA\", value:\"2018-A-0123-S\");\n script_xref(name:\"SuSE\", value:\"SUSE-SU-2021:3929-1\");\n script_xref(name:\"IAVA\", value:\"2018-A-0017-S\");\n\n script_name(english:\"SUSE SLES12 Security Update : kernel (SUSE-SU-2021:3929-1)\");\n\n script_set_attribute(attribute:\"synopsis\", value:\n\"The remote SUSE host is missing one or more security updates.\");\n script_set_attribute(attribute:\"description\", value:\n\"The remote SUSE Linux SLES12 host has packages installed that are affected by multiple vulnerabilities as referenced in\nthe SUSE-SU-2021:3929-1 advisory.\n\n - Systems with microprocessors utilizing speculative execution and branch prediction may allow unauthorized\n disclosure of information to an attacker with local user access via a side-channel analysis.\n (CVE-2017-5753)\n\n - The inode_init_owner function in fs/inode.c in the Linux kernel through 3.16 allows local users to create\n files with an unintended group ownership, in a scenario where a directory is SGID to a certain group and\n is writable by a user who is not a member of that group. Here, the non-member can trigger creation of a\n plain file whose group ownership is that group. The intended behavior was that the non-member can trigger\n creation of a directory (but not a plain file) whose group ownership is that group. The non-member can\n escalate privileges by making the plain file executable and SGID. (CVE-2018-13405)\n\n - A use-after-free issue was found in the way the Linux kernel's KVM hypervisor processed posted interrupts\n when nested(=1) virtualization is enabled. In nested_get_vmcs12_pages(), in case of an error while\n processing posted interrupt address, it unmaps the 'pi_desc_page' without resetting 'pi_desc' descriptor\n address, which is later used in pi_test_and_clear_on(). A guest user/process could use this flaw to crash\n the host kernel resulting in DoS or potentially gain privileged access to a system. Kernel versions before\n 4.14.91 and before 4.19.13 are vulnerable. (CVE-2018-16882)\n\n - In l2tp_session_delete and related functions of l2tp_core.c, there is possible memory corruption due to a\n use after free. This could lead to local escalation of privilege with System execution privileges needed.\n User interaction is not needed for exploitation.Product: AndroidVersions: Android kernelAndroid ID:\n A-152735806 (CVE-2020-0429)\n\n - An issue was discovered in xfs_agf_verify in fs/xfs/libxfs/xfs_alloc.c in the Linux kernel through 5.6.10.\n Attackers may trigger a sync of excessive duration via an XFS v5 image with crafted metadata, aka\n CID-d0c7feaf8767. (CVE-2020-12655)\n\n - An out-of-bounds memory write flaw was found in how the Linux kernel's Voice Over IP H.323 connection\n tracking functionality handled connections on ipv6 port 1720. This flaw allows an unauthenticated remote\n user to crash the system, causing a denial of service. The highest threat from this vulnerability is to\n confidentiality, integrity, as well as system availability. (CVE-2020-14305)\n\n - u'Specifically timed and handcrafted traffic can cause internal errors in a WLAN device that lead to\n improper layer 2 Wi-Fi encryption with a consequent possibility of information disclosure over the air for\n a discrete set of traffic' in Snapdragon Auto, Snapdragon Compute, Snapdragon Connectivity, Snapdragon\n Consumer IOT, Snapdragon Industrial IOT, Snapdragon Mobile, Snapdragon Voice & Music, Snapdragon\n Wearables, Snapdragon Wired Infrastructure and Networking in APQ8053, IPQ4019, IPQ8064, MSM8909W,\n MSM8996AU, QCA9531, QCN5502, QCS405, SDX20, SM6150, SM7150 (CVE-2020-3702)\n\n - A flaw was found in the way memory resources were freed in the unix_stream_recvmsg function in the Linux\n kernel when a signal was pending. This flaw allows an unprivileged local user to crash the system by\n exhausting available memory. The highest threat from this vulnerability is to system availability.\n (CVE-2021-20265)\n\n - A flaw in the processing of received ICMP errors (ICMP fragment needed and ICMP redirect) in the Linux\n kernel functionality was found to allow the ability to quickly scan open UDP ports. This flaw allows an\n off-path remote user to effectively bypass the source port UDP randomization. The highest threat from this\n vulnerability is to confidentiality and possibly integrity, because software that relies on UDP source\n port randomization are indirectly affected as well. (CVE-2021-20322)\n\n - An out-of-bounds (OOB) memory write flaw was found in list_devices in drivers/md/dm-ioctl.c in the Multi-\n device driver module in the Linux kernel before 5.12. A bound check failure allows an attacker with\n special user (CAP_SYS_ADMIN) privilege to gain access to out-of-bounds memory leading to a system crash or\n a leak of internal kernel information. The highest threat from this vulnerability is to system\n availability. (CVE-2021-31916)\n\n - The Linux kernel before 5.11.14 has a use-after-free in cipso_v4_genopt in net/ipv4/cipso_ipv4.c because\n the CIPSO and CALIPSO refcounting for the DOI definitions is mishandled, aka CID-ad5d07f4a9cd. This leads\n to writing an arbitrary value. (CVE-2021-33033)\n\n - In the Linux kernel through 5.13.7, an unprivileged BPF program can obtain sensitive information from\n kernel memory via a Speculative Store Bypass side-channel attack because the protection mechanism neglects\n the possibility of uninitialized memory locations on the BPF stack. (CVE-2021-34556)\n\n - A flaw was found in the Linux kernel's CAPI over Bluetooth connection code. An attacker with a local\n account can escalate privileges when CAPI (ISDN) hardware connection fails. (CVE-2021-34981)\n\n - In the Linux kernel through 5.13.7, an unprivileged BPF program can obtain sensitive information from\n kernel memory via a Speculative Store Bypass side-channel attack because a certain preempting store\n operation does not necessarily occur before a store operation that has an attacker-controlled value.\n (CVE-2021-35477)\n\n - A flaw use-after-free in function sco_sock_sendmsg() of the Linux kernel HCI subsystem was found in the\n way user calls ioct UFFDIO_REGISTER or other way triggers race condition of the call sco_conn_del()\n together with the call sco_sock_sendmsg() with the expected controllable faulting memory page. A\n privileged local user could use this flaw to crash the system or escalate their privileges on the system.\n (CVE-2021-3640)\n\n - A flaw was found in the KVM's AMD code for supporting SVM nested virtualization. The flaw occurs when\n processing the VMCB (virtual machine control block) provided by the L1 guest to spawn/handle a nested\n guest (L2). Due to improper validation of the int_ctl field, this issue could allow a malicious L1 to\n enable AVIC support (Advanced Virtual Interrupt Controller) for the L2 guest. As a result, the L2 guest\n would be allowed to read/write physical pages of the host, resulting in a crash of the entire system, leak\n of sensitive data or potential guest-to-host escape. This flaw affects Linux kernel versions prior to\n 5.14-rc7. (CVE-2021-3653)\n\n - A vulnerability was found in the Linux kernel in versions prior to v5.14-rc1. Missing size validations on\n inbound SCTP packets may allow the kernel to read uninitialized memory. (CVE-2021-3655)\n\n - A NULL pointer dereference flaw was found in the Linux kernel's IEEE 802.15.4 wireless networking\n subsystem in the way the user closes the LR-WPAN connection. This flaw allows a local user to crash the\n system. The highest threat from this vulnerability is to system availability. (CVE-2021-3659)\n\n - A lack of CPU resource in the Linux kernel tracing module functionality in versions prior to 5.14-rc3 was\n found in the way user uses trace ring buffer in a specific way. Only privileged local users (with\n CAP_SYS_ADMIN capability) could use this flaw to starve the resources causing denial of service.\n (CVE-2021-3679)\n\n - A flaw was found in the Routing decision classifier in the Linux kernel's Traffic Control networking\n subsystem in the way it handled changing of classification filters, leading to a use-after-free condition.\n This flaw allows unprivileged local users to escalate their privileges on the system. The highest threat\n from this vulnerability is to confidentiality, integrity, as well as system availability. (CVE-2021-3715)\n\n - hso_free_net_device in drivers/net/usb/hso.c in the Linux kernel through 5.13.4 calls unregister_netdev\n without checking for the NETREG_REGISTERED state, leading to a use-after-free and a double free.\n (CVE-2021-37159)\n\n - A flaw was found in the Linux kernel's OverlayFS subsystem in the way the user mounts the TmpFS filesystem\n with OverlayFS. This flaw allows a local user to gain access to hidden files that should not be\n accessible. (CVE-2021-3732)\n\n - A use-after-free flaw was found in the Linux kernel's Bluetooth subsystem in the way user calls connect to\n the socket and disconnect simultaneously due to a race condition. This flaw allows a user to crash the\n system or escalate their privileges. The highest threat from this vulnerability is to confidentiality,\n integrity, as well as system availability. (CVE-2021-3752)\n\n - A race problem was seen in the vt_k_ioctl in drivers/tty/vt/vt_ioctl.c in the Linux kernel, which may\n cause an out of bounds read in vt as the write access to vc_mode is not protected by lock-in vt_ioctl\n (KDSETMDE). The highest threat from this vulnerability is to data confidentiality. (CVE-2021-3753)\n\n - arch/powerpc/kvm/book3s_rtas.c in the Linux kernel through 5.13.5 on the powerpc platform allows KVM guest\n OS users to cause host OS memory corruption via rtas_args.nargs, aka CID-f62f3c20647e. (CVE-2021-37576)\n\n - A flaw was found in the Linux kernel. A use-after-free vulnerability in the NFC stack can lead to a threat\n to confidentiality, integrity, and system availability. (CVE-2021-3760)\n\n - A flaw was found in the Linux SCTP stack. A blind attacker may be able to kill an existing SCTP\n association through invalid chunks if the attacker knows the IP-addresses and port numbers being used and\n the attacker can send packets with spoofed IP addresses. (CVE-2021-3772)\n\n - ** DISPUTED ** In drivers/char/virtio_console.c in the Linux kernel before 5.13.4, data corruption or loss\n can be triggered by an untrusted device that supplies a buf->len value exceeding the buffer size. NOTE:\n the vendor indicates that the cited data corruption is not a vulnerability in any existing use case; the\n length validation was added solely for robustness in the face of anomalous host OS behavior.\n (CVE-2021-38160)\n\n - arch/x86/kvm/mmu/paging_tmpl.h in the Linux kernel before 5.12.11 incorrectly computes the access\n permissions of a shadow page, leading to a missing guest protection page fault. (CVE-2021-38198)\n\n - drivers/usb/host/max3421-hcd.c in the Linux kernel before 5.13.6 allows physically proximate attackers to\n cause a denial of service (use-after-free and panic) by removing a MAX-3421 USB device in certain\n situations. (CVE-2021-38204)\n\n - A race condition was discovered in ext4_write_inline_data_end in fs/ext4/inline.c in the ext4 subsystem in\n the Linux kernel through 5.13.13. (CVE-2021-40490)\n\n - The decode_data function in drivers/net/hamradio/6pack.c in the Linux kernel before 5.13.13 has a slab\n out-of-bounds write. Input from a process that has the CAP_NET_ADMIN capability can lead to root access.\n (CVE-2021-42008)\n\n - A heap-based buffer overflow flaw was found in the Linux kernel FireDTV media card driver, where the user\n calls the CA_SEND_MSG ioctl. This flaw allows a local user of the host machine to crash the system or\n escalate privileges on the system. The highest threat from this vulnerability is to confidentiality,\n integrity, as well as system availability. (CVE-2021-42739)\n\n - An issue was discovered in the Linux kernel before 5.14.15. There is an array-index-out-of-bounds flaw in\n the detach_capi_ctr function in drivers/isdn/capi/kcapi.c. 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processed by JIT compilers. This behavior, also considered an improper branch-pruning logic issue, could possibly be used by local users for denial of service. (CVE-2017-17862)\n\n - kernel/bpf/verifier.c in the Linux kernel through 4.14.8 mishandles states_equal comparisons between the pointer data type and the UNKNOWN_VALUE data type, which allows local users to obtain potentially sensitive address information, aka a pointer leak. (CVE-2017-17864)\n\n - The inode_init_owner function in fs/inode.c in the Linux kernel through 3.16 allows local users to create files with an unintended group ownership, in a scenario where a directory is SGID to a certain group and is writable by a user who is not a member of that group. Here, the non-member can trigger creation of a plain file whose group ownership is that group. The intended behavior was that the non-member can trigger creation of a directory (but not a plain file) whose group ownership is that group. The non-member can escalate privileges by making the plain file executable and SGID. (CVE-2018-13405)\n\n - A use-after-free issue was found in the way the Linux kernel's KVM hypervisor processed posted interrupts when nested(=1) virtualization is enabled. In nested_get_vmcs12_pages(), in case of an error while processing posted interrupt address, it unmaps the 'pi_desc_page' without resetting 'pi_desc' descriptor address, which is later used in pi_test_and_clear_on(). A guest user/process could use this flaw to crash the host kernel resulting in DoS or potentially gain privileged access to a system. Kernel versions before 4.14.91 and before 4.19.13 are vulnerable. (CVE-2018-16882)\n\n - In l2tp_session_delete and related functions of l2tp_core.c, there is possible memory corruption due to a use after free. This could lead to local escalation of privilege with System execution privileges needed.\n User interaction is not needed for exploitation.Product: AndroidVersions: Android kernelAndroid ID:\n A-152735806 (CVE-2020-0429)\n\n - An issue was discovered in xfs_agf_verify in fs/xfs/libxfs/xfs_alloc.c in the Linux kernel through 5.6.10.\n Attackers may trigger a sync of excessive duration via an XFS v5 image with crafted metadata, aka CID-d0c7feaf8767. (CVE-2020-12655)\n\n - An out-of-bounds memory write flaw was found in how the Linux kernel's Voice Over IP H.323 connection tracking functionality handled connections on ipv6 port 1720. This flaw allows an unauthenticated remote user to crash the system, causing a denial of service. The highest threat from this vulnerability is to confidentiality, integrity, as well as system availability. (CVE-2020-14305)\n\n - u'Specifically timed and handcrafted traffic can cause internal errors in a WLAN device that lead to improper layer 2 Wi-Fi encryption with a consequent possibility of information disclosure over the air for a discrete set of traffic' in Snapdragon Auto, Snapdragon Compute, Snapdragon Connectivity, Snapdragon Consumer IOT, Snapdragon Industrial IOT, Snapdragon Mobile, Snapdragon Voice & Music, Snapdragon Wearables, Snapdragon Wired Infrastructure and Networking in APQ8053, IPQ4019, IPQ8064, MSM8909W, MSM8996AU, QCA9531, QCN5502, QCS405, SDX20, SM6150, SM7150 (CVE-2020-3702)\n\n - IBM Power9 (AIX 7.1, 7.2, and VIOS 3.1) processors could allow a local user to obtain sensitive information from the data in the L1 cache under extenuating circumstances. IBM X-Force ID: 189296.\n (CVE-2020-4788)\n\n - A flaw was found in the way memory resources were freed in the unix_stream_recvmsg function in the Linux kernel when a signal was pending. This flaw allows an unprivileged local user to crash the system by exhausting available memory. The highest threat from this vulnerability is to system availability.\n (CVE-2021-20265)\n\n - A flaw in the processing of received ICMP errors (ICMP fragment needed and ICMP redirect) in the Linux kernel functionality was found to allow the ability to quickly scan open UDP ports. This flaw allows an off-path remote user to effectively bypass the source port UDP randomization. The highest threat from this vulnerability is to confidentiality and possibly integrity, because software that relies on UDP source port randomization are indirectly affected as well. (CVE-2021-20322)\n\n - An out-of-bounds (OOB) memory write flaw was found in list_devices in drivers/md/dm-ioctl.c in the Multi- device driver module in the Linux kernel before 5.12. A bound check failure allows an attacker with special user (CAP_SYS_ADMIN) privilege to gain access to out-of-bounds memory leading to a system crash or a leak of internal kernel information. The highest threat from this vulnerability is to system availability. (CVE-2021-31916)\n\n - The Linux kernel before 5.11.14 has a use-after-free in cipso_v4_genopt in net/ipv4/cipso_ipv4.c because the CIPSO and CALIPSO refcounting for the DOI definitions is mishandled, aka CID-ad5d07f4a9cd. This leads to writing an arbitrary value. (CVE-2021-33033)\n\n - In the Linux kernel through 5.13.7, an unprivileged BPF program can obtain sensitive information from kernel memory via a Speculative Store Bypass side-channel attack because the protection mechanism neglects the possibility of uninitialized memory locations on the BPF stack. (CVE-2021-34556)\n\n - A flaw was found in the Linux kernel's CAPI over Bluetooth connection code. An attacker with a local account can escalate privileges when CAPI (ISDN) hardware connection fails. (CVE-2021-34981)\n\n - In the Linux kernel through 5.13.7, an unprivileged BPF program can obtain sensitive information from kernel memory via a Speculative Store Bypass side-channel attack because a certain preempting store operation does not necessarily occur before a store operation that has an attacker-controlled value.\n (CVE-2021-35477)\n\n - A flaw use-after-free in function sco_sock_sendmsg() of the Linux kernel HCI subsystem was found in the way user calls ioct UFFDIO_REGISTER or other way triggers race condition of the call sco_conn_del() together with the call sco_sock_sendmsg() with the expected controllable faulting memory page. A privileged local user could use this flaw to crash the system or escalate their privileges on the system.\n (CVE-2021-3640)\n\n - A flaw was found in the KVM's AMD code for supporting SVM nested virtualization. The flaw occurs when processing the VMCB (virtual machine control block) provided by the L1 guest to spawn/handle a nested guest (L2). Due to improper validation of the int_ctl field, this issue could allow a malicious L1 to enable AVIC support (Advanced Virtual Interrupt Controller) for the L2 guest. As a result, the L2 guest would be allowed to read/write physical pages of the host, resulting in a crash of the entire system, leak of sensitive data or potential guest-to-host escape. This flaw affects Linux kernel versions prior to 5.14-rc7. (CVE-2021-3653)\n\n - A vulnerability was found in the Linux kernel in versions prior to v5.14-rc1. Missing size validations on inbound SCTP packets may allow the kernel to read uninitialized memory. (CVE-2021-3655)\n\n - A NULL pointer dereference flaw was found in the Linux kernel's IEEE 802.15.4 wireless networking subsystem in the way the user closes the LR-WPAN connection. This flaw allows a local user to crash the system. The highest threat from this vulnerability is to system availability. (CVE-2021-3659)\n\n - A lack of CPU resource in the Linux kernel tracing module functionality in versions prior to 5.14-rc3 was found in the way user uses trace ring buffer in a specific way. Only privileged local users (with CAP_SYS_ADMIN capability) could use this flaw to starve the resources causing denial of service.\n (CVE-2021-3679)\n\n - A flaw was found in the Routing decision classifier in the Linux kernel's Traffic Control networking subsystem in the way it handled changing of classification filters, leading to a use-after-free condition.\n This flaw allows unprivileged local users to escalate their privileges on the system. The highest threat from this vulnerability is to confidentiality, integrity, as well as system availability. (CVE-2021-3715)\n\n - hso_free_net_device in drivers/net/usb/hso.c in the Linux kernel through 5.13.4 calls unregister_netdev without checking for the NETREG_REGISTERED state, leading to a use-after-free and a double free.\n (CVE-2021-37159)\n\n - A flaw was found in the Linux kernel's OverlayFS subsystem in the way the user mounts the TmpFS filesystem with OverlayFS. This flaw allows a local user to gain access to hidden files that should not be accessible. (CVE-2021-3732)\n\n - A use-after-free flaw was found in the Linux kernel's Bluetooth subsystem in the way user calls connect to the socket and disconnect simultaneously due to a race condition. This flaw allows a user to crash the system or escalate their privileges. The highest threat from this vulnerability is to confidentiality, integrity, as well as system availability. (CVE-2021-3752)\n\n - A race problem was seen in the vt_k_ioctl in drivers/tty/vt/vt_ioctl.c in the Linux kernel, which may cause an out of bounds read in vt as the write access to vc_mode is not protected by lock-in vt_ioctl (KDSETMDE). The highest threat from this vulnerability is to data confidentiality. (CVE-2021-3753)\n\n - arch/powerpc/kvm/book3s_rtas.c in the Linux kernel through 5.13.5 on the powerpc platform allows KVM guest OS users to cause host OS memory corruption via rtas_args.nargs, aka CID-f62f3c20647e. (CVE-2021-37576)\n\n - A flaw was found in the Linux kernel. A use-after-free vulnerability in the NFC stack can lead to a threat to confidentiality, integrity, and system availability. (CVE-2021-3760)\n\n - A flaw was found in the Linux SCTP stack. A blind attacker may be able to kill an existing SCTP association through invalid chunks if the attacker knows the IP-addresses and port numbers being used and the attacker can send packets with spoofed IP addresses. (CVE-2021-3772)\n\n - ** DISPUTED ** In drivers/char/virtio_console.c in the Linux kernel before 5.13.4, data corruption or loss can be triggered by an untrusted device that supplies a buf->len value exceeding the buffer size. NOTE:\n the vendor indicates that the cited data corruption is not a vulnerability in any existing use case; the length validation was added solely for robustness in the face of anomalous host OS behavior.\n (CVE-2021-38160)\n\n - arch/x86/kvm/mmu/paging_tmpl.h in the Linux kernel before 5.12.11 incorrectly computes the access permissions of a shadow page, leading to a missing guest protection page fault. (CVE-2021-38198)\n\n - drivers/usb/host/max3421-hcd.c in the Linux kernel before 5.13.6 allows physically proximate attackers to cause a denial of service (use-after-free and panic) by removing a MAX-3421 USB device in certain situations. (CVE-2021-38204)\n\n - A race condition was discovered in ext4_write_inline_data_end in fs/ext4/inline.c in the ext4 subsystem in the Linux kernel through 5.13.13. (CVE-2021-40490)\n\n - The decode_data function in drivers/net/hamradio/6pack.c in the Linux kernel before 5.13.13 has a slab out-of-bounds write. Input from a process that has the CAP_NET_ADMIN capability can lead to root access.\n (CVE-2021-42008)\n\n - A heap-based buffer overflow flaw was found in the Linux kernel FireDTV media card driver, where the user calls the CA_SEND_MSG ioctl. This flaw allows a local user of the host machine to crash the system or escalate privileges on the system. The highest threat from this vulnerability is to confidentiality, integrity, as well as system availability. (CVE-2021-42739)\n\n - An issue was discovered in the Linux kernel before 5.14.15. There is an array-index-out-of-bounds flaw in the detach_capi_ctr function in drivers/isdn/capi/kcapi.c. (CVE-2021-43389)\n\nNote that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.", "cvss3": {}, "published": "2021-12-07T00:00:00", "type": "nessus", "title": "SUSE SLES12 Security Update : kernel (SUSE-SU-2021:3935-1)", "bulletinFamily": "scanner", "cvss2": {}, "cvelist": ["CVE-2017-17862", "CVE-2017-17864", "CVE-2018-13405", "CVE-2018-16882", "CVE-2020-0429", "CVE-2020-12655", "CVE-2020-14305", "CVE-2020-3702", "CVE-2020-4788", "CVE-2021-20265", "CVE-2021-20322", "CVE-2021-31916", "CVE-2021-33033", "CVE-2021-34556", "CVE-2021-34981", "CVE-2021-3542", "CVE-2021-35477", "CVE-2021-3640", "CVE-2021-3653", "CVE-2021-3655", "CVE-2021-3659", "CVE-2021-3679", "CVE-2021-3715", "CVE-2021-37159", "CVE-2021-3732", "CVE-2021-3752", "CVE-2021-3753", "CVE-2021-37576", "CVE-2021-3760", "CVE-2021-3772", "CVE-2021-38160", "CVE-2021-38198", "CVE-2021-38204", "CVE-2021-3896", "CVE-2021-40490", "CVE-2021-42008", "CVE-2021-42739", "CVE-2021-43389"], "modified": "2023-07-13T00:00:00", "cpe": ["p-cpe:/a:novell:suse_linux:cluster-md-kmp-default", "p-cpe:/a:novell:suse_linux:dlm-kmp-default", "p-cpe:/a:novell:suse_linux:gfs2-kmp-default", "p-cpe:/a:novell:suse_linux:kernel-default", "p-cpe:/a:novell:suse_linux:kernel-default-base", "p-cpe:/a:novell:suse_linux:kernel-default-devel", "p-cpe:/a:novell:suse_linux:kernel-default-kgraft", "p-cpe:/a:novell:suse_linux:kernel-default-man", "p-cpe:/a:novell:suse_linux:kernel-devel", "p-cpe:/a:novell:suse_linux:kernel-macros", "p-cpe:/a:novell:suse_linux:kernel-source", "p-cpe:/a:novell:suse_linux:kernel-syms", "p-cpe:/a:novell:suse_linux:kgraft-patch-4_4_180-94_150-default", "p-cpe:/a:novell:suse_linux:ocfs2-kmp-default", "cpe:/o:novell:suse_linux:12"], "id": "SUSE_SU-2021-3935-1.NASL", "href": "https://www.tenable.com/plugins/nessus/155902", "sourceData": "#%NASL_MIN_LEVEL 70300\n##\n# (C) Tenable, Inc.\n#\n# The package checks in this plugin were extracted from\n# SUSE update advisory SUSE-SU-2021:3935-1. 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This behavior, also considered an improper branch-pruning logic\n issue, could possibly be used by local users for denial of service. (CVE-2017-17862)\n\n - kernel/bpf/verifier.c in the Linux kernel through 4.14.8 mishandles states_equal comparisons between the\n pointer data type and the UNKNOWN_VALUE data type, which allows local users to obtain potentially\n sensitive address information, aka a pointer leak. (CVE-2017-17864)\n\n - The inode_init_owner function in fs/inode.c in the Linux kernel through 3.16 allows local users to create\n files with an unintended group ownership, in a scenario where a directory is SGID to a certain group and\n is writable by a user who is not a member of that group. Here, the non-member can trigger creation of a\n plain file whose group ownership is that group. The intended behavior was that the non-member can trigger\n creation of a directory (but not a plain file) whose group ownership is that group. The non-member can\n escalate privileges by making the plain file executable and SGID. (CVE-2018-13405)\n\n - A use-after-free issue was found in the way the Linux kernel's KVM hypervisor processed posted interrupts\n when nested(=1) virtualization is enabled. In nested_get_vmcs12_pages(), in case of an error while\n processing posted interrupt address, it unmaps the 'pi_desc_page' without resetting 'pi_desc' descriptor\n address, which is later used in pi_test_and_clear_on(). A guest user/process could use this flaw to crash\n the host kernel resulting in DoS or potentially gain privileged access to a system. Kernel versions before\n 4.14.91 and before 4.19.13 are vulnerable. (CVE-2018-16882)\n\n - In l2tp_session_delete and related functions of l2tp_core.c, there is possible memory corruption due to a\n use after free. This could lead to local escalation of privilege with System execution privileges needed.\n User interaction is not needed for exploitation.Product: AndroidVersions: Android kernelAndroid ID:\n A-152735806 (CVE-2020-0429)\n\n - An issue was discovered in xfs_agf_verify in fs/xfs/libxfs/xfs_alloc.c in the Linux kernel through 5.6.10.\n Attackers may trigger a sync of excessive duration via an XFS v5 image with crafted metadata, aka\n CID-d0c7feaf8767. (CVE-2020-12655)\n\n - An out-of-bounds memory write flaw was found in how the Linux kernel's Voice Over IP H.323 connection\n tracking functionality handled connections on ipv6 port 1720. This flaw allows an unauthenticated remote\n user to crash the system, causing a denial of service. The highest threat from this vulnerability is to\n confidentiality, integrity, as well as system availability. (CVE-2020-14305)\n\n - u'Specifically timed and handcrafted traffic can cause internal errors in a WLAN device that lead to\n improper layer 2 Wi-Fi encryption with a consequent possibility of information disclosure over the air for\n a discrete set of traffic' in Snapdragon Auto, Snapdragon Compute, Snapdragon Connectivity, Snapdragon\n Consumer IOT, Snapdragon Industrial IOT, Snapdragon Mobile, Snapdragon Voice & Music, Snapdragon\n Wearables, Snapdragon Wired Infrastructure and Networking in APQ8053, IPQ4019, IPQ8064, MSM8909W,\n MSM8996AU, QCA9531, QCN5502, QCS405, SDX20, SM6150, SM7150 (CVE-2020-3702)\n\n - IBM Power9 (AIX 7.1, 7.2, and VIOS 3.1) processors could allow a local user to obtain sensitive\n information from the data in the L1 cache under extenuating circumstances. IBM X-Force ID: 189296.\n (CVE-2020-4788)\n\n - A flaw was found in the way memory resources were freed in the unix_stream_recvmsg function in the Linux\n kernel when a signal was pending. This flaw allows an unprivileged local user to crash the system by\n exhausting available memory. The highest threat from this vulnerability is to system availability.\n (CVE-2021-20265)\n\n - A flaw in the processing of received ICMP errors (ICMP fragment needed and ICMP redirect) in the Linux\n kernel functionality was found to allow the ability to quickly scan open UDP ports. This flaw allows an\n off-path remote user to effectively bypass the source port UDP randomization. The highest threat from this\n vulnerability is to confidentiality and possibly integrity, because software that relies on UDP source\n port randomization are indirectly affected as well. (CVE-2021-20322)\n\n - An out-of-bounds (OOB) memory write flaw was found in list_devices in drivers/md/dm-ioctl.c in the Multi-\n device driver module in the Linux kernel before 5.12. A bound check failure allows an attacker with\n special user (CAP_SYS_ADMIN) privilege to gain access to out-of-bounds memory leading to a system crash or\n a leak of internal kernel information. The highest threat from this vulnerability is to system\n availability. (CVE-2021-31916)\n\n - The Linux kernel before 5.11.14 has a use-after-free in cipso_v4_genopt in net/ipv4/cipso_ipv4.c because\n the CIPSO and CALIPSO refcounting for the DOI definitions is mishandled, aka CID-ad5d07f4a9cd. This leads\n to writing an arbitrary value. (CVE-2021-33033)\n\n - In the Linux kernel through 5.13.7, an unprivileged BPF program can obtain sensitive information from\n kernel memory via a Speculative Store Bypass side-channel attack because the protection mechanism neglects\n the possibility of uninitialized memory locations on the BPF stack. (CVE-2021-34556)\n\n - A flaw was found in the Linux kernel's CAPI over Bluetooth connection code. An attacker with a local\n account can escalate privileges when CAPI (ISDN) hardware connection fails. (CVE-2021-34981)\n\n - In the Linux kernel through 5.13.7, an unprivileged BPF program can obtain sensitive information from\n kernel memory via a Speculative Store Bypass side-channel attack because a certain preempting store\n operation does not necessarily occur before a store operation that has an attacker-controlled value.\n (CVE-2021-35477)\n\n - A flaw use-after-free in function sco_sock_sendmsg() of the Linux kernel HCI subsystem was found in the\n way user calls ioct UFFDIO_REGISTER or other way triggers race condition of the call sco_conn_del()\n together with the call sco_sock_sendmsg() with the expected controllable faulting memory page. A\n privileged local user could use this flaw to crash the system or escalate their privileges on the system.\n (CVE-2021-3640)\n\n - A flaw was found in the KVM's AMD code for supporting SVM nested virtualization. The flaw occurs when\n processing the VMCB (virtual machine control block) provided by the L1 guest to spawn/handle a nested\n guest (L2). Due to improper validation of the int_ctl field, this issue could allow a malicious L1 to\n enable AVIC support (Advanced Virtual Interrupt Controller) for the L2 guest. As a result, the L2 guest\n would be allowed to read/write physical pages of the host, resulting in a crash of the entire system, leak\n of sensitive data or potential guest-to-host escape. This flaw affects Linux kernel versions prior to\n 5.14-rc7. (CVE-2021-3653)\n\n - A vulnerability was found in the Linux kernel in versions prior to v5.14-rc1. Missing size validations on\n inbound SCTP packets may allow the kernel to read uninitialized memory. (CVE-2021-3655)\n\n - A NULL pointer dereference flaw was found in the Linux kernel's IEEE 802.15.4 wireless networking\n subsystem in the way the user closes the LR-WPAN connection. This flaw allows a local user to crash the\n system. The highest threat from this vulnerability is to system availability. (CVE-2021-3659)\n\n - A lack of CPU resource in the Linux kernel tracing module functionality in versions prior to 5.14-rc3 was\n found in the way user uses trace ring buffer in a specific way. Only privileged local users (with\n CAP_SYS_ADMIN capability) could use this flaw to starve the resources causing denial of service.\n (CVE-2021-3679)\n\n - A flaw was found in the Routing decision classifier in the Linux kernel's Traffic Control networking\n subsystem in the way it handled changing of classification filters, leading to a use-after-free condition.\n This flaw allows unprivileged local users to escalate their privileges on the system. The highest threat\n from this vulnerability is to confidentiality, integrity, as well as system availability. (CVE-2021-3715)\n\n - hso_free_net_device in drivers/net/usb/hso.c in the Linux kernel through 5.13.4 calls unregister_netdev\n without checking for the NETREG_REGISTERED state, leading to a use-after-free and a double free.\n (CVE-2021-37159)\n\n - A flaw was found in the Linux kernel's OverlayFS subsystem in the way the user mounts the TmpFS filesystem\n with OverlayFS. This flaw allows a local user to gain access to hidden files that should not be\n accessible. (CVE-2021-3732)\n\n - A use-after-free flaw was found in the Linux kernel's Bluetooth subsystem in the way user calls connect to\n the socket and disconnect simultaneously due to a race condition. This flaw allows a user to crash the\n system or escalate their privileges. The highest threat from this vulnerability is to confidentiality,\n integrity, as well as system availability. (CVE-2021-3752)\n\n - A race problem was seen in the vt_k_ioctl in drivers/tty/vt/vt_ioctl.c in the Linux kernel, which may\n cause an out of bounds read in vt as the write access to vc_mode is not protected by lock-in vt_ioctl\n (KDSETMDE). The highest threat from this vulnerability is to data confidentiality. (CVE-2021-3753)\n\n - arch/powerpc/kvm/book3s_rtas.c in the Linux kernel through 5.13.5 on the powerpc platform allows KVM guest\n OS users to cause host OS memory corruption via rtas_args.nargs, aka CID-f62f3c20647e. (CVE-2021-37576)\n\n - A flaw was found in the Linux kernel. A use-after-free vulnerability in the NFC stack can lead to a threat\n to confidentiality, integrity, and system availability. (CVE-2021-3760)\n\n - A flaw was found in the Linux SCTP stack. A blind attacker may be able to kill an existing SCTP\n association through invalid chunks if the attacker knows the IP-addresses and port numbers being used and\n the attacker can send packets with spoofed IP addresses. (CVE-2021-3772)\n\n - ** DISPUTED ** In drivers/char/virtio_console.c in the Linux kernel before 5.13.4, data corruption or loss\n can be triggered by an untrusted device that supplies a buf->len value exceeding the buffer size. NOTE:\n the vendor indicates that the cited data corruption is not a vulnerability in any existing use case; the\n length validation was added solely for robustness in the face of anomalous host OS behavior.\n (CVE-2021-38160)\n\n - arch/x86/kvm/mmu/paging_tmpl.h in the Linux kernel before 5.12.11 incorrectly computes the access\n permissions of a shadow page, leading to a missing guest protection page fault. (CVE-2021-38198)\n\n - drivers/usb/host/max3421-hcd.c in the Linux kernel before 5.13.6 allows physically proximate attackers to\n cause a denial of service (use-after-free and panic) by removing a MAX-3421 USB device in certain\n situations. (CVE-2021-38204)\n\n - A race condition was discovered in ext4_write_inline_data_end in fs/ext4/inline.c in the ext4 subsystem in\n the Linux kernel through 5.13.13. (CVE-2021-40490)\n\n - The decode_data function in drivers/net/hamradio/6pack.c in the Linux kernel before 5.13.13 has a slab\n out-of-bounds write. Input from a process that has the CAP_NET_ADMIN capability can lead to root access.\n (CVE-2021-42008)\n\n - A heap-based buffer overflow flaw was found in the Linux kernel FireDTV media card driver, where the user\n calls the CA_SEND_MSG ioctl. This flaw allows a local user of the host machine to crash the system or\n escalate privileges on the system. The highest threat from this vulnerability is to confidentiality,\n integrity, as well as system availability. (CVE-2021-42739)\n\n - An issue was discovered in the Linux kernel before 5.14.15. There is an array-index-out-of-bounds flaw in\n the detach_capi_ctr function in drivers/isdn/capi/kcapi.c. 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The Bug Report November 2021 Edition

Description

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