SUSE SLES11 Security Update : squid3 (SUSE-SU-2020:14460-1)

2021-06-10T00:00:00

Description

The remote SUSE Linux SLES11 host has a package installed that is affected by multiple - An issue was discovered in Squid through 4.7. When handling the tag esi:when when ESI is enabled, Squid - An issue was discovered in Squid through 4.7 and 5. When receiving a request, Squid checks its cache to If found, it servers the request. The absolute URL can include the decoded UserInfo (username and - An issue was discovered in Squid through 4.7. When Squid is parsing ESI, it keeps the ESI elements in (CVE-2019-12521) - An issue was discovered in Squid before 4.9. When handling a URN request, a corresponding HTTP request is - An issue was discovered in Squid through 4.7. When handling requests from users, Squid checks its rules to - An issue was discovered in Squid 3.3.9 through 3.5.28 and 4.x through 4.7. When Squid is configured to use - An issue was discovered in Squid before 4.9. URN response handling in Squid suffers from a heap-based - An issue was discovered in Squid before 4.10. It allows a crafted FTP server to trigger disclosure of - An issue was discovered in Squid 2.x through 2.7.STABLE9, 3.x through 3.5.28, and 4.x through 4.7. When uudecode determines how many bytes will be decoded by iterating over the input and checking its table. The - The cachemgr.cgi web module of Squid through 4.7 has XSS via the user_name or auth parameter. (CVE-2019-13345) - An issue was discovered in Squid 3.x and 4.x through 4.8. Due to incorrect input validation, there is a - An issue was discovered in Squid 3.x and 4.x through 4.8 when the append_domain setting is used (because (CVE-2019-18677) - An issue was discovered in Squid 3.x and 4.x through 4.8. It allows attackers to smuggle HTTP requests - An issue was discovered in Squid 2.x, 3.x, and 4.x through 4.8. Due to incorrect data management, it is (CVE-2019-18679) - Squid before 4.9, when certain web browsers are used, mishandles HTML in the host (aka hostname) parameter - An issue was discovered in Squid before 5.0.2. A remote attacker can replay a sniffed Digest - An issue was discovered in Squid 5.x before 5.0.3. Due to an Incorrect Synchronization, a Denial of - An issue was discovered in http/ContentLengthInterpreter.cc in Squid before 4.12 and 5.x before 5.0.3. A - An issue was discovered in Squid before 4.10. Due to incorrect input validation, it can interpret crafted (CVE-2020-8449) - An issue was discovered in Squid before 4.10. Due to incorrect buffer management, a remote client can - An issue was discovered in Squid before 4.10. Due to incorrect input validation, the NTLM authentication (CVE-2020-8517) Note that Nessus has not tested for this issue but has instead relied only on the application's vulnerabilities as referenced in the SUSE-SU-2020:14460-1 advisory. calls ESIExpression::Evaluate. This function uses a fixed stack buffer to hold the expression while it's being evaluated. When processing the expression, it could either evaluate the top of the stack, or add a new member to the stack. When adding a new member, there is no check to ensure that the stack won't overflow. (CVE-2019-12519) see if it can serve up a response. It does this by making a MD5 hash of the absolute URL of the request. password) for certain protocols. This decoded info is prepended to the domain. This allows an attacker to provide a username that has special characters to delimit the domain, and treat the rest of the URL as a path or query string. An attacker could first make a request to their domain using an encoded username, then when a request for the target domain comes in that decodes to the exact URL, it will serve the attacker's HTML instead of the real HTML. On Squid servers that also act as reverse proxies, this allows an attacker to gain access to features that only reverse proxies can use, such as ESI. (CVE-2019-12520) ESIContext. ESIContext contains a buffer for holding a stack of ESIElements. When a new ESIElement is parsed, it is added via addStackElement. addStackElement has a check for the number of elements in this buffer, but it's off by 1, leading to a Heap Overflow of 1 element. The overflow is within the same structure so it can't affect adjacent memory blocks, and thus just leads to a crash while processing. made. This HTTP request doesn't go through the access checks that incoming HTTP requests go through. This causes all access checks to be bypassed and allows access to restricted HTTP servers, e.g., an attacker can connect to HTTP servers that only listen on localhost. (CVE-2019-12523) see if the request should be denied. Squid by default comes with rules to block access to the Cache Manager, which serves detailed server information meant for the maintainer. This rule is implemented via url_regex. The handler for url_regex rules URL decodes an incoming request. This allows an attacker to encode their URL to bypass the url_regex check, and gain access to the blocked resource. (CVE-2019-12524) Digest authentication, it parses the header Proxy-Authorization. It searches for certain tokens such as domain, uri, and qop. Squid checks if this token's value starts with a quote and ends with one. If so, it performs a memcpy of its length minus 2. Squid never checks whether the value is just a single quote (which would satisfy its requirements), leading to a memcpy of its length minus 1. (CVE-2019-12525) buffer overflow. When receiving data from a remote server in response to an URN request, Squid fails to ensure that the response can fit within the buffer. This leads to attacker controlled data overflowing in the heap. (CVE-2019-12526) sensitive information from heap memory, such as information associated with other users' sessions or non- Squid processes. (CVE-2019-12528) Squid is configured to use Basic Authentication, the Proxy-Authorization header is parsed via uudecode. length is then used to start decoding the string. There are no checks to ensure that the length it calculates isn't greater than the input buffer. This leads to adjacent memory being decoded as well. An attacker would not be able to retrieve the decoded data unless the Squid maintainer had configured the display of usernames on error pages. (CVE-2019-12529) heap-based buffer overflow that can result in Denial of Service to all clients using the proxy. Severity is high due to this vulnerability occurring before normal security checks; any remote client that can reach the proxy port can trivially perform the attack via a crafted URI scheme. (CVE-2019-18676) the appended characters do not properly interact with hostname length restrictions). Due to incorrect message processing, it can inappropriately redirect traffic to origins it should not be delivered to. through frontend software to a Squid instance that splits the HTTP Request pipeline differently. The resulting Response messages corrupt caches (between a client and Squid) with attacker-controlled content at arbitrary URLs. Effects are isolated to software between the attacker client and Squid. There are no effects on Squid itself, nor on any upstream servers. The issue is related to a request header containing whitespace between a header name and a colon. (CVE-2019-18678) vulnerable to information disclosure when processing HTTP Digest Authentication. Nonce tokens contain the raw byte value of a pointer that sits within heap memory allocation. This information reduces ASLR protections and may aid attackers isolating memory areas to target for remote code execution attacks. to cachemgr.cgi. (CVE-2019-18860) Authentication nonce to gain access to resources that are otherwise forbidden. This occurs because the attacker can overflow the nonce reference counter (a short integer). Remote code execution may occur if the pooled token credentials are freed (instead of replayed as valid credentials). (CVE-2020-11945) Service can occur when processing objects in an SMP cache because of an Ipc::Mem::PageStack::pop ABA problem during access to the memory page/slot management list. (CVE-2020-14059) Request Smuggling and Poisoning attack can succeed against the HTTP cache. The client sends an HTTP request with a Content-Length header containing +\ - or an uncommon shell whitespace character prefix to the length field-value. (CVE-2020-15049) HTTP requests in unexpected ways to access server resources prohibited by earlier security filters. cause a buffer overflow in a Squid instance acting as a reverse proxy. (CVE-2020-8450) credentials parser in ext_lm_group_acl may write to memory outside the credentials buffer. On systems with memory access protections, this can result in the helper process being terminated unexpectedly. This leads to the Squid process also terminating and a denial of service for all clients using the proxy. self-reported version number.

{"id": "SUSE_SU-2020-14460-1.NASL", "vendorId": null, "type": "nessus", "bulletinFamily": "scanner", "title": "SUSE SLES11 Security Update : squid3 (SUSE-SU-2020:14460-1)", "description": "The remote SUSE Linux SLES11 host has a package installed that is affected by multiple vulnerabilities as referenced in the SUSE-SU-2020:14460-1 advisory.\n\n - An issue was discovered in Squid through 4.7. When handling the tag esi:when when ESI is enabled, Squid calls ESIExpression::Evaluate. This function uses a fixed stack buffer to hold the expression while it's being evaluated. When processing the expression, it could either evaluate the top of the stack, or add a new member to the stack. When adding a new member, there is no check to ensure that the stack won't overflow. (CVE-2019-12519)\n\n - An issue was discovered in Squid through 4.7 and 5. When receiving a request, Squid checks its cache to see if it can serve up a response. It does this by making a MD5 hash of the absolute URL of the request.\n If found, it servers the request. The absolute URL can include the decoded UserInfo (username and password) for certain protocols. This decoded info is prepended to the domain. This allows an attacker to provide a username that has special characters to delimit the domain, and treat the rest of the URL as a path or query string. An attacker could first make a request to their domain using an encoded username, then when a request for the target domain comes in that decodes to the exact URL, it will serve the attacker's HTML instead of the real HTML. On Squid servers that also act as reverse proxies, this allows an attacker to gain access to features that only reverse proxies can use, such as ESI. (CVE-2019-12520)\n\n - An issue was discovered in Squid through 4.7. When Squid is parsing ESI, it keeps the ESI elements in ESIContext. ESIContext contains a buffer for holding a stack of ESIElements. When a new ESIElement is parsed, it is added via addStackElement. addStackElement has a check for the number of elements in this buffer, but it's off by 1, leading to a Heap Overflow of 1 element. The overflow is within the same structure so it can't affect adjacent memory blocks, and thus just leads to a crash while processing.\n (CVE-2019-12521)\n\n - An issue was discovered in Squid before 4.9. When handling a URN request, a corresponding HTTP request is made. This HTTP request doesn't go through the access checks that incoming HTTP requests go through. This causes all access checks to be bypassed and allows access to restricted HTTP servers, e.g., an attacker can connect to HTTP servers that only listen on localhost. (CVE-2019-12523)\n\n - An issue was discovered in Squid through 4.7. When handling requests from users, Squid checks its rules to see if the request should be denied. Squid by default comes with rules to block access to the Cache Manager, which serves detailed server information meant for the maintainer. This rule is implemented via url_regex. The handler for url_regex rules URL decodes an incoming request. This allows an attacker to encode their URL to bypass the url_regex check, and gain access to the blocked resource. (CVE-2019-12524)\n\n - An issue was discovered in Squid 3.3.9 through 3.5.28 and 4.x through 4.7. When Squid is configured to use Digest authentication, it parses the header Proxy-Authorization. It searches for certain tokens such as domain, uri, and qop. Squid checks if this token's value starts with a quote and ends with one. If so, it performs a memcpy of its length minus 2. Squid never checks whether the value is just a single quote (which would satisfy its requirements), leading to a memcpy of its length minus 1. (CVE-2019-12525)\n\n - An issue was discovered in Squid before 4.9. URN response handling in Squid suffers from a heap-based buffer overflow. When receiving data from a remote server in response to an URN request, Squid fails to ensure that the response can fit within the buffer. This leads to attacker controlled data overflowing in the heap. (CVE-2019-12526)\n\n - An issue was discovered in Squid before 4.10. It allows a crafted FTP server to trigger disclosure of sensitive information from heap memory, such as information associated with other users' sessions or non- Squid processes. (CVE-2019-12528)\n\n - An issue was discovered in Squid 2.x through 2.7.STABLE9, 3.x through 3.5.28, and 4.x through 4.7. When Squid is configured to use Basic Authentication, the Proxy-Authorization header is parsed via uudecode.\n uudecode determines how many bytes will be decoded by iterating over the input and checking its table. The length is then used to start decoding the string. There are no checks to ensure that the length it calculates isn't greater than the input buffer. This leads to adjacent memory being decoded as well. An attacker would not be able to retrieve the decoded data unless the Squid maintainer had configured the display of usernames on error pages. (CVE-2019-12529)\n\n - The cachemgr.cgi web module of Squid through 4.7 has XSS via the user_name or auth parameter.\n (CVE-2019-13345)\n\n - An issue was discovered in Squid 3.x and 4.x through 4.8. Due to incorrect input validation, there is a heap-based buffer overflow that can result in Denial of Service to all clients using the proxy. Severity is high due to this vulnerability occurring before normal security checks; any remote client that can reach the proxy port can trivially perform the attack via a crafted URI scheme. (CVE-2019-18676)\n\n - An issue was discovered in Squid 3.x and 4.x through 4.8 when the append_domain setting is used (because the appended characters do not properly interact with hostname length restrictions). Due to incorrect message processing, it can inappropriately redirect traffic to origins it should not be delivered to.\n (CVE-2019-18677)\n\n - An issue was discovered in Squid 3.x and 4.x through 4.8. It allows attackers to smuggle HTTP requests through frontend software to a Squid instance that splits the HTTP Request pipeline differently. The resulting Response messages corrupt caches (between a client and Squid) with attacker-controlled content at arbitrary URLs. Effects are isolated to software between the attacker client and Squid. There are no effects on Squid itself, nor on any upstream servers. The issue is related to a request header containing whitespace between a header name and a colon. (CVE-2019-18678)\n\n - An issue was discovered in Squid 2.x, 3.x, and 4.x through 4.8. Due to incorrect data management, it is vulnerable to information disclosure when processing HTTP Digest Authentication. Nonce tokens contain the raw byte value of a pointer that sits within heap memory allocation. This information reduces ASLR protections and may aid attackers isolating memory areas to target for remote code execution attacks.\n (CVE-2019-18679)\n\n - Squid before 4.9, when certain web browsers are used, mishandles HTML in the host (aka hostname) parameter to cachemgr.cgi. (CVE-2019-18860)\n\n - An issue was discovered in Squid before 5.0.2. A remote attacker can replay a sniffed Digest Authentication nonce to gain access to resources that are otherwise forbidden. This occurs because the attacker can overflow the nonce reference counter (a short integer). Remote code execution may occur if the pooled token credentials are freed (instead of replayed as valid credentials). (CVE-2020-11945)\n\n - An issue was discovered in Squid 5.x before 5.0.3. Due to an Incorrect Synchronization, a Denial of Service can occur when processing objects in an SMP cache because of an Ipc::Mem::PageStack::pop ABA problem during access to the memory page/slot management list. (CVE-2020-14059)\n\n - An issue was discovered in http/ContentLengthInterpreter.cc in Squid before 4.12 and 5.x before 5.0.3. A Request Smuggling and Poisoning attack can succeed against the HTTP cache. The client sends an HTTP request with a Content-Length header containing +\\ - or an uncommon shell whitespace character prefix to the length field-value. (CVE-2020-15049)\n\n - An issue was discovered in Squid before 4.10. Due to incorrect input validation, it can interpret crafted HTTP requests in unexpected ways to access server resources prohibited by earlier security filters.\n (CVE-2020-8449)\n\n - An issue was discovered in Squid before 4.10. Due to incorrect buffer management, a remote client can cause a buffer overflow in a Squid instance acting as a reverse proxy. (CVE-2020-8450)\n\n - An issue was discovered in Squid before 4.10. Due to incorrect input validation, the NTLM authentication credentials parser in ext_lm_group_acl may write to memory outside the credentials buffer. On systems with memory access protections, this can result in the helper process being terminated unexpectedly. This leads to the Squid process also terminating and a denial of service for all clients using the proxy.\n (CVE-2020-8517)\n\nNote that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.", "published": "2021-06-10T00:00:00", "modified": "2022-05-09T00:00:00", "epss": [], "cvss": {"score": 0.0, "vector": "NONE"}, "cvss2": {}, "cvss3": {}, "href": "https://www.tenable.com/plugins/nessus/150657", "reporter": "This script is Copyright (C) 2021-2022 and is owned by Tenable, Inc. or an Affiliate thereof.", "references": ["https://bugzilla.suse.com/1162691", "https://bugzilla.suse.com/1173455", "http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-12523", "https://www.suse.com/security/cve/CVE-2019-18678", "https://bugzilla.suse.com/1170313", "https://www.suse.com/security/cve/CVE-2019-12519", "https://www.suse.com/security/cve/CVE-2020-11945", "https://www.suse.com/security/cve/CVE-2019-12526", "https://bugzilla.suse.com/1162689", "http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-8449", "http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-12520", "https://bugzilla.suse.com/1156328", "https://www.suse.com/security/cve/CVE-2019-18677", "http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-14059", "http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-15049", "http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-12524", "https://www.suse.com/security/cve/CVE-2019-12520", "https://www.suse.com/security/cve/CVE-2019-18860", "https://bugzilla.suse.com/1141332", "http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-12521", "http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-18677", "http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-13345", "http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-18679", "http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-12529", "https://bugzilla.suse.com/1140738", "https://www.suse.com/security/cve/CVE-2019-12528", "https://www.suse.com/security/cve/CVE-2019-18676", "https://bugzilla.suse.com/1167373", "https://www.suse.com/security/cve/CVE-2019-12521", "http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-18860", "https://bugzilla.suse.com/1162687", "http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-18676", "https://www.suse.com/security/cve/CVE-2019-12523", "https://bugzilla.suse.com/1170423", "http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-8450", "http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-18678", "https://www.suse.com/security/cve/CVE-2020-15049", "http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-12528", "http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-12525", "https://bugzilla.suse.com/1156323", "https://www.suse.com/security/cve/CVE-2019-12525", "https://www.suse.com/security/cve/CVE-2019-12524", "https://www.suse.com/security/cve/CVE-2019-18679", "https://bugzilla.suse.com/1156329", "https://www.suse.com/security/cve/CVE-2020-14059", "https://bugzilla.suse.com/1156326", "https://www.suse.com/security/cve/CVE-2019-13345", "https://www.suse.com/security/cve/CVE-2020-8449", "http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-12519", "https://bugzilla.suse.com/1156324", "https://www.suse.com/security/cve/CVE-2020-8450", "https://bugzilla.suse.com/1141329", "https://www.suse.com/security/cve/CVE-2019-12529", "https://www.suse.com/security/cve/CVE-2020-8517", "http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-8517", "http://www.nessus.org/u?d14abea9", "https://bugzilla.suse.com/1173304", "http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-12526", "https://bugzilla.suse.com/1169659", "http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-11945"], "cvelist": ["CVE-2019-12519", "CVE-2019-12520", "CVE-2019-12521", "CVE-2019-12523", "CVE-2019-12524", "CVE-2019-12525", "CVE-2019-12526", "CVE-2019-12528", "CVE-2019-12529", "CVE-2019-13345", "CVE-2019-18676", "CVE-2019-18677", "CVE-2019-18678", "CVE-2019-18679", "CVE-2019-18860", "CVE-2020-11945", "CVE-2020-14059", "CVE-2020-15049", "CVE-2020-8449", "CVE-2020-8450", "CVE-2020-8517"], "immutableFields": [], "lastseen": "2023-10-15T14:56:12", "viewCount": 22, "enchantments": {"dependencies": {"references": [{"type": "almalinux", "idList": ["ALSA-2019:3476", "ALSA-2020:2041", "ALSA-2020:4743"]}, {"type": "alpinelinux", "idList": ["ALPINE:CVE-2019-12519", "ALPINE:CVE-2019-12521", "ALPINE:CVE-2019-12525", "ALPINE:CVE-2019-12528", "ALPINE:CVE-2019-12529", "ALPINE:CVE-2019-13345", "ALPINE:CVE-2019-18679", "ALPINE:CVE-2020-11945", "ALPINE:CVE-2020-15049", "ALPINE:CVE-2020-8449", "ALPINE:CVE-2020-8450", "ALPINE:CVE-2020-8517"]}, {"type": "altlinux", "idList": ["3A64545D4BA6B207A117314EF6DDA6B5", "5AD5A005B692F7B4EEBDB24FBCCE2038", "F7336A12B4B581B50ACA516BE4EA6F7E"]}, {"type": "amazon", "idList": ["ALAS-2020-1378", "ALAS-2020-1386", "ALAS-2020-1453", "ALAS-2023-1757", "ALAS-2023-1766", "ALAS-2023-1774", "ALAS2-2020-1448", "ALAS2-2020-1486", "ALAS2-2023-2062", "ALAS2-2023-2065", "ALAS2-2023-2081"]}, {"type": "archlinux", "idList": ["ASA-201911-8"]}, {"type": "centos", "idList": ["CESA-2020:1068", "CESA-2020:2040", "CESA-2020:4082"]}, {"type": "checkpoint_advisories", "idList": ["CPAI-2019-1689", "CPAI-2019-1767", "CPAI-2019-1888", "CPAI-2020-1279"]}, {"type": "cloudlinux", "idList": ["CLSA-2021:1628782974", "CLSA-2021:1629902677", "CLSA-2021:1632262221"]}, {"type": "cve", "idList": ["CVE-2019-12519", "CVE-2019-12520", "CVE-2019-12521", "CVE-2019-12523", "CVE-2019-12524", "CVE-2019-12525", "CVE-2019-12526", "CVE-2019-12528", "CVE-2019-12529", "CVE-2019-13345", "CVE-2019-18676", "CVE-2019-18677", "CVE-2019-18678", "CVE-2019-18679", "CVE-2019-18860", "CVE-2020-11945", "CVE-2020-14059", "CVE-2020-15049", "CVE-2020-8449", "CVE-2020-8450", "CVE-2020-8517"]}, {"type": "debian", "idList": ["DEBIAN:DLA-1847-1:2B931", "DEBIAN:DLA-1847-1:FE5B9", "DEBIAN:DLA-1858-1:1A45F", "DEBIAN:DLA-2028-1:AF47A", "DEBIAN:DLA-2028-1:D9696", "DEBIAN:DLA-2278-1:4A30F", "DEBIAN:DLA-2278-1:83AD0", "DEBIAN:DLA-2278-2:038A6", "DEBIAN:DLA-2278-2:B1B82", "DEBIAN:DLA-2278-3:3F923", "DEBIAN:DLA-2278-3:AD5E3", "DEBIAN:DLA-2394-1:6349E", "DEBIAN:DLA-2394-1:9B122", "DEBIAN:DSA-4507-1:28A22", "DEBIAN:DSA-4507-1:C3813", "DEBIAN:DSA-4682-1:5FB04", "DEBIAN:DSA-4732-1:7F364"]}, {"type": "debiancve", "idList": ["DEBIANCVE:CVE-2019-12519", "DEBIANCVE:CVE-2019-12520", "DEBIANCVE:CVE-2019-12521", "DEBIANCVE:CVE-2019-12523", "DEBIANCVE:CVE-2019-12524", "DEBIANCVE:CVE-2019-12525", "DEBIANCVE:CVE-2019-12526", "DEBIANCVE:CVE-2019-12528", "DEBIANCVE:CVE-2019-12529", "DEBIANCVE:CVE-2019-13345", "DEBIANCVE:CVE-2019-18676", "DEBIANCVE:CVE-2019-18677", "DEBIANCVE:CVE-2019-18678", "DEBIANCVE:CVE-2019-18679", "DEBIANCVE:CVE-2019-18860", "DEBIANCVE:CVE-2020-11945", "DEBIANCVE:CVE-2020-14059", "DEBIANCVE:CVE-2020-15049", "DEBIANCVE:CVE-2020-8449", "DEBIANCVE:CVE-2020-8450", "DEBIANCVE:CVE-2020-8517"]}, {"type": "fedora", "idList": ["FEDORA:0EDF2610C907", "FEDORA:206DA6300307", "FEDORA:366E360151A3", "FEDORA:5413A60A7E8A", "FEDORA:6CF8E60A184D", "FEDORA:6E1AA30C325C", "FEDORA:6F8546087B74", "FEDORA:A0299606D8C2", "FEDORA:F0A8D6048176", "FEDORA:F3746608713A"]}, {"type": "freebsd", "idList": ["57C1C2EE-7914-11EA-90BF-0800276545C1", "620685D6-0AA3-11EA-9673-4C72B94353B5"]}, {"type": "gentoo", "idList": ["GLSA-202003-34", "GLSA-202005-05"]}, {"type": "hackerone", "idList": ["H1:758445", "H1:789034", "H1:824163", "H1:824203", "H1:824753", "H1:824771", "H1:824802"]}, {"type": "ibm", "idList": ["0A425AE154320282FF38ABB3C8BA8D3AD10793B88A3CFCA031B295F986453B12"]}, {"type": "mageia", "idList": ["MGASA-2019-0265", "MGASA-2019-0266", "MGASA-2019-0382", "MGASA-2020-0106", "MGASA-2020-0187", "MGASA-2020-0332"]}, {"type": "nessus", "idList": ["AL2_ALAS-2020-1448.NASL", "AL2_ALAS-2020-1486.NASL", "AL2_ALAS-2023-2062.NASL", "AL2_ALAS-2023-2065.NASL", "AL2_ALAS-2023-2081.NASL", "AL2_ALASSQUID4-2023-007.NASL", "AL2_ALASSQUID4-2023-008.NASL", 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"ubuntucve", "idList": ["UB:CVE-2019-12519", "UB:CVE-2019-12520", "UB:CVE-2019-12521", "UB:CVE-2019-12523", "UB:CVE-2019-12524", "UB:CVE-2019-12525", "UB:CVE-2019-12526", "UB:CVE-2019-12528", "UB:CVE-2019-12529", "UB:CVE-2019-13345", "UB:CVE-2019-18676", "UB:CVE-2019-18677", "UB:CVE-2019-18678", "UB:CVE-2019-18679", "UB:CVE-2019-18860", "UB:CVE-2020-11945", "UB:CVE-2020-14059", "UB:CVE-2020-15049", "UB:CVE-2020-8449", "UB:CVE-2020-8450", "UB:CVE-2020-8517"]}, {"type": "veracode", "idList": ["VERACODE:25192", "VERACODE:25193", "VERACODE:25194", "VERACODE:26094", "VERACODE:26127", "VERACODE:26146", "VERACODE:26147", "VERACODE:26840", "VERACODE:26855", "VERACODE:26891", "VERACODE:26934", "VERACODE:26978", "VERACODE:27053", "VERACODE:27064", "VERACODE:27113", "VERACODE:27175", "VERACODE:27193", "VERACODE:27274", "VERACODE:28354"]}]}, "score": {"value": 0.3, "vector": "NONE"}, "backreferences": {"references": [{"type": "almalinux", "idList": ["ALSA-2020:4743"]}, {"type": "amazon", "idList": ["ALAS-2020-1378"]}, {"type": "archlinux", "idList": ["ASA-201911-8"]}, {"type": "centos", "idList": ["CESA-2020:1068", "CESA-2020:2040"]}, {"type": "checkpoint_advisories", "idList": ["CPAI-2019-1689", "CPAI-2019-1767", "CPAI-2019-1888", "CPAI-2020-1279"]}, {"type": "cloudlinux", "idList": ["CLSA-2021:1628782974"]}, {"type": "cve", "idList": ["CVE-2019-12519", "CVE-2019-12520", "CVE-2019-12521", "CVE-2019-12523", "CVE-2019-12524", "CVE-2019-12525", "CVE-2019-12526", "CVE-2019-12529", "CVE-2019-13345", "CVE-2019-18676", "CVE-2019-18677", "CVE-2019-18678", "CVE-2019-18679"]}, {"type": "debian", "idList": ["DEBIAN:DLA-1847-1:2B931", "DEBIAN:DLA-1858-1:1A45F", "DEBIAN:DSA-4507-1:28A22"]}, {"type": "debiancve", "idList": ["DEBIANCVE:CVE-2019-12519", "DEBIANCVE:CVE-2019-12520", "DEBIANCVE:CVE-2019-12521", "DEBIANCVE:CVE-2019-12523", "DEBIANCVE:CVE-2019-12524", "DEBIANCVE:CVE-2019-12525", "DEBIANCVE:CVE-2019-12526", "DEBIANCVE:CVE-2019-12528", "DEBIANCVE:CVE-2019-12529", "DEBIANCVE:CVE-2019-13345", "DEBIANCVE:CVE-2019-18676", "DEBIANCVE:CVE-2019-18677", "DEBIANCVE:CVE-2019-18678", "DEBIANCVE:CVE-2019-18679", "DEBIANCVE:CVE-2019-18860", "DEBIANCVE:CVE-2020-11945", "DEBIANCVE:CVE-2020-14059", "DEBIANCVE:CVE-2020-15049", "DEBIANCVE:CVE-2020-8449", "DEBIANCVE:CVE-2020-8450", "DEBIANCVE:CVE-2020-8517"]}, {"type": "fedora", "idList": ["FEDORA:0EDF2610C907", "FEDORA:206DA6300307", "FEDORA:366E360151A3", "FEDORA:5413A60A7E8A", "FEDORA:6CF8E60A184D", "FEDORA:6E1AA30C325C", "FEDORA:6F8546087B74", "FEDORA:A0299606D8C2", "FEDORA:F0A8D6048176", "FEDORA:F3746608713A"]}, {"type": "freebsd", "idList": ["620685D6-0AA3-11EA-9673-4C72B94353B5"]}, {"type": "gentoo", "idList": ["GLSA-202003-34"]}, {"type": "hackerone", "idList": ["H1:789034"]}, {"type": "ibm", "idList": ["0A425AE154320282FF38ABB3C8BA8D3AD10793B88A3CFCA031B295F986453B12"]}, {"type": "metasploit", "idList": ["MSF:ILITIES/CENTOS_LINUX-CVE-2020-11945/", "MSF:ILITIES/HUAWEI-EULEROS-2_0_SP5-CVE-2019-18860/", 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"exploitation": null, "epss": [{"cve": "CVE-2019-12519", "epss": 0.00819, "percentile": 0.79422, "modified": "2023-05-07"}, {"cve": "CVE-2019-12520", "epss": 0.00795, "percentile": 0.79126, "modified": "2023-05-07"}, {"cve": "CVE-2019-12521", "epss": 0.01139, "percentile": 0.82627, "modified": "2023-05-07"}, {"cve": "CVE-2019-12523", "epss": 0.00991, "percentile": 0.81318, "modified": "2023-05-07"}, {"cve": "CVE-2019-12524", "epss": 0.00958, "percentile": 0.80983, "modified": "2023-05-07"}, {"cve": "CVE-2019-12525", "epss": 0.20204, "percentile": 0.95593, "modified": "2023-05-07"}, {"cve": "CVE-2019-12526", "epss": 0.48472, "percentile": 0.9692, "modified": "2023-05-07"}, {"cve": "CVE-2019-12528", "epss": 0.04578, "percentile": 0.91292, "modified": "2023-05-07"}, {"cve": "CVE-2019-12529", "epss": 0.00783, "percentile": 0.78876, "modified": "2023-05-07"}, {"cve": "CVE-2019-13345", "epss": 0.9527, "percentile": 0.9895, "modified": "2023-05-07"}, {"cve": "CVE-2019-18676", "epss": 0.031, 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package_array['exists_check'];\n if (!empty_or_null(package_array['rpm_spec_vers_cmp'])) rpm_spec_vers_cmp = package_array['rpm_spec_vers_cmp'];\n if (reference && release && exists_check) {\n if (rpm_exists(release:release, rpm:exists_check) && rpm_check(release:release, sp:sp, cpu:cpu, reference:reference, rpm_spec_vers_cmp:rpm_spec_vers_cmp)) flag++;\n }\n else if (reference && release) {\n if (rpm_check(release:release, sp:sp, cpu:cpu, reference:reference, rpm_spec_vers_cmp:rpm_spec_vers_cmp)) flag++;\n }\n}\n\nif (flag)\n{\n ltss_plugin_caveat = '\\n' +\n 'NOTE: This vulnerability check contains fixes that apply to\\n' +\n 'packages only available in SUSE Enterprise Linux Server LTSS\\n' +\n 'repositories. Access to these package security updates require\\n' +\n 'a paid SUSE LTSS subscription.\\n';\n security_report_v4(\n port : 0,\n severity : SECURITY_HOLE,\n extra : rpm_report_get() + ltss_plugin_caveat\n );\n exit(0);\n}\nelse\n{\n tested = pkg_tests_get();\n if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);\n else audit(AUDIT_PACKAGE_NOT_INSTALLED, 'squid3');\n}\n", "naslFamily": "SuSE Local Security Checks", "cpe": ["p-cpe:/a:novell:suse_linux:squid3", "cpe:/o:novell:suse_linux:11"], "solution": "Update the affected squid3 package.", "nessusSeverity": "High", "cvssScoreSource": "CVE-2020-8450", "vendor_cvss2": {"score": 7.5, "vector": "CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:P"}, "vendor_cvss3": {"score": 9.8, "vector": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"}, "vpr": {"risk factor": "Medium", "score": "5.9"}, "exploitAvailable": false, "exploitEase": "No known exploits are available", "patchPublicationDate": "2020-08-24T00:00:00", "vulnerabilityPublicationDate": "2019-05-27T00:00:00", "exploitableWith": []}

{"debian": [{"lastseen": "2023-12-06T17:46:56", "description": "- -------------------------------------------------------------------------\nDebian LTS Advisory DLA-2278-1 debian-lts@lists.debian.org\nhttps://www.debian.org/lts/security/ Markus Koschany\nJuly 10, 2020 https://wiki.debian.org/LTS\n- -------------------------------------------------------------------------\n\nPackage : squid3\nVersion : 3.5.23-5+deb9u2\nCVE ID : CVE-2018-19132 CVE-2019-12519 CVE-2019-12520\n CVE-2019-12521 CVE-2019-12523 CVE-2019-12524\n CVE-2019-12525 CVE-2019-12526 CVE-2019-12528\n CVE-2019-12529 CVE-2019-13345 CVE-2019-18676\n CVE-2019-18677 CVE-2019-18678 CVE-2019-18679\n CVE-2019-18860 CVE-2020-8449 CVE-2020-8450\n CVE-2020-11945\nDebian Bug : 950802 931478 950925 912294\n\nIt was found that Squid, a high-performance proxy caching server for\nweb clients, has been affected by multiple security vulnerabilities.\nDue to incorrect input validation and URL request handling it was\npossible to bypass access restrictions for restricted HTTP servers\nand to cause a denial-of-service.\n\nFor Debian 9 stretch, these problems have been fixed in version\n3.5.23-5+deb9u2.\n\nWe recommend that you upgrade your squid3 packages.\n\nFor the detailed security status of squid3 please refer to\nits security tracker page at:\nhttps://security-tracker.debian.org/tracker/squid3\n\nFurther information about Debian LTS security advisories, how to apply\nthese updates to your system and frequently asked questions can be\nfound at: https://wiki.debian.org/LTS", "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": "2020-07-10T21:55:24", "type": "debian", "title": "[SECURITY] [DLA 2278-1] squid3 security update", "bulletinFamily": "unix", "cvss2": {"severity": "HIGH", "exploitabilityScore": 10.0, "obtainAllPrivilege": false, "userInteractionRequired": false, "obtainOtherPrivilege": false, "cvssV2": {"accessComplexity": "LOW", "confidentialityImpact": "PARTIAL", "availabilityImpact": "PARTIAL", "integrityImpact": "PARTIAL", "baseScore": 7.5, "vectorString": "AV:N/AC:L/Au:N/C:P/I:P/A:P", "version": "2.0", "accessVector": "NETWORK", "authentication": "NONE"}, "impactScore": 6.4, "acInsufInfo": false, "obtainUserPrivilege": false}, "cvelist": ["CVE-2018-19132", "CVE-2019-12519", "CVE-2019-12520", "CVE-2019-12521", "CVE-2019-12523", "CVE-2019-12524", "CVE-2019-12525", "CVE-2019-12526", "CVE-2019-12528", "CVE-2019-12529", "CVE-2019-13345", "CVE-2019-18676", "CVE-2019-18677", "CVE-2019-18678", "CVE-2019-18679", "CVE-2019-18860", "CVE-2020-11945", "CVE-2020-8449", "CVE-2020-8450"], "modified": "2020-07-10T21:55:24", "id": "DEBIAN:DLA-2278-1:83AD0", "href": "https://lists.debian.org/debian-lts-announce/2020/07/msg00009.html", "cvss": {"score": 7.5, "vector": "AV:N/AC:L/Au:N/C:P/I:P/A:P"}}, {"lastseen": "2021-10-22T11:20:59", "description": "- -------------------------------------------------------------------------\nDebian LTS Advisory DLA-2278-1 debian-lts@lists.debian.org\nhttps://www.debian.org/lts/security/ Markus Koschany\nJuly 10, 2020 https://wiki.debian.org/LTS\n- -------------------------------------------------------------------------\n\nPackage : squid3\nVersion : 3.5.23-5+deb9u2\nCVE ID : CVE-2018-19132 CVE-2019-12519 CVE-2019-12520\n CVE-2019-12521 CVE-2019-12523 CVE-2019-12524\n CVE-2019-12525 CVE-2019-12526 CVE-2019-12528\n CVE-2019-12529 CVE-2019-13345 CVE-2019-18676\n CVE-2019-18677 CVE-2019-18678 CVE-2019-18679\n CVE-2019-18860 CVE-2020-8449 CVE-2020-8450\n CVE-2020-11945\nDebian Bug : 950802 931478 950925 912294\n\nIt was found that Squid, a high-performance proxy caching server for\nweb clients, has been affected by multiple security vulnerabilities.\nDue to incorrect input validation and URL request handling it was\npossible to bypass access restrictions for restricted HTTP servers\nand to cause a denial-of-service.\n\nFor Debian 9 stretch, these problems have been fixed in version\n3.5.23-5+deb9u2.\n\nWe recommend that you upgrade your squid3 packages.\n\nFor the detailed security status of squid3 please refer to\nits security tracker page at:\nhttps://security-tracker.debian.org/tracker/squid3\n\nFurther information about Debian LTS security advisories, how to apply\nthese updates to your system and frequently asked questions can be\nfound at: https://wiki.debian.org/LTS", "cvss3": {"exploitabilityScore": 3.9, "cvssV3": {"baseSeverity": "CRITICAL", "confidentialityImpact": "HIGH", "attackComplexity": "LOW", "scope": "UNCHANGED", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "integrityImpact": "HIGH", "baseScore": 9.8, "privilegesRequired": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "userInteraction": "NONE", "version": "3.1"}, "impactScore": 5.9}, "published": "2020-07-10T21:55:24", "type": "debian", "title": "[SECURITY] [DLA 2278-1] squid3 security update", "bulletinFamily": "unix", "cvss2": {"severity": "HIGH", "exploitabilityScore": 10.0, "obtainAllPrivilege": false, "userInteractionRequired": false, "obtainOtherPrivilege": false, "cvssV2": {"accessComplexity": "LOW", "confidentialityImpact": "PARTIAL", "availabilityImpact": "PARTIAL", "integrityImpact": "PARTIAL", "baseScore": 7.5, "vectorString": "AV:N/AC:L/Au:N/C:P/I:P/A:P", "version": "2.0", "accessVector": "NETWORK", "authentication": "NONE"}, "acInsufInfo": false, "impactScore": 6.4, "obtainUserPrivilege": false}, "cvelist": ["CVE-2018-19132", "CVE-2019-12519", "CVE-2019-12520", "CVE-2019-12521", "CVE-2019-12523", "CVE-2019-12524", "CVE-2019-12525", "CVE-2019-12526", "CVE-2019-12528", "CVE-2019-12529", "CVE-2019-13345", "CVE-2019-18676", "CVE-2019-18677", "CVE-2019-18678", "CVE-2019-18679", "CVE-2019-18860", "CVE-2020-11945", "CVE-2020-8449", "CVE-2020-8450"], "modified": "2020-07-10T21:55:24", "id": "DEBIAN:DLA-2278-1:4A30F", "href": "https://lists.debian.org/debian-lts-announce/2020/07/msg00009.html", "cvss": {"score": 7.5, "vector": "AV:N/AC:L/Au:N/C:P/I:P/A:P"}}, {"lastseen": "2023-12-07T10:32:35", "description": "- -------------------------------------------------------------------------\nDebian Security Advisory DSA-4682-1 security@debian.org\nhttps://www.debian.org/security/ Moritz Muehlenhoff\nMay 08, 2020 https://www.debian.org/security/faq\n- -------------------------------------------------------------------------\n\nPackage : squid\nCVE ID : CVE-2019-12519 CVE-2019-12520 CVE-2019-12521 CVE-2019-12523 \n CVE-2019-12524 CVE-2019-12526 CVE-2019-12528 CVE-2019-18676 \n CVE-2019-18677 CVE-2019-18678 CVE-2019-18679 CVE-2020-8449 \n CVE-2020-8450 CVE-2020-11945\n\nMultiple security issues were discovered in the Squid proxy caching\nserver, which could result in the bypass of security filters, information\ndisclosure, the execution of arbitrary code or denial of service.\n\nFor the stable distribution (buster), these problems have been fixed in\nversion 4.6-1+deb10u2.\n\nWe recommend that you upgrade your squid packages.\n\nFor the detailed security status of squid please refer to\nits security tracker page at:\nhttps://security-tracker.debian.org/tracker/squid\n\nFurther information about Debian Security Advisories, how to apply\nthese updates to your system and frequently asked questions can be\nfound at: https://www.debian.org/security/\n\nMailing list: debian-security-announce@lists.debian.org", "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": "2020-05-08T19:10:03", "type": "debian", "title": "[SECURITY] [DSA 4682-1] squid security update", "bulletinFamily": "unix", "cvss2": {"severity": "HIGH", "exploitabilityScore": 10.0, "obtainAllPrivilege": false, "userInteractionRequired": false, "obtainOtherPrivilege": false, "cvssV2": {"accessComplexity": "LOW", "confidentialityImpact": "PARTIAL", "availabilityImpact": "PARTIAL", "integrityImpact": "PARTIAL", "baseScore": 7.5, "vectorString": "AV:N/AC:L/Au:N/C:P/I:P/A:P", "version": "2.0", "accessVector": "NETWORK", "authentication": "NONE"}, "impactScore": 6.4, "acInsufInfo": false, "obtainUserPrivilege": false}, "cvelist": ["CVE-2019-12519", "CVE-2019-12520", "CVE-2019-12521", "CVE-2019-12523", "CVE-2019-12524", "CVE-2019-12526", "CVE-2019-12528", "CVE-2019-18676", "CVE-2019-18677", "CVE-2019-18678", "CVE-2019-18679", "CVE-2020-11945", "CVE-2020-8449", "CVE-2020-8450"], "modified": "2020-05-08T19:10:03", "id": "DEBIAN:DSA-4682-1:5FB04", "href": "https://lists.debian.org/debian-security-announce/2020/msg00086.html", "cvss": {"score": 7.5, "vector": "AV:N/AC:L/Au:N/C:P/I:P/A:P"}}, {"lastseen": "2023-12-06T17:44:08", "description": "Package : squid3\nVersion : 3.4.8-6+deb8u9\nCVE ID : CVE-2019-12526 CVE-2019-18677 CVE-2019-18678\n CVE-2019-18679\n\nIt was found that Squid, a high-performance proxy caching server for\nweb clients, has been affected by the following security\nvulnerabilities.\n\nCVE-2019-12526\n\n URN response handling in Squid suffers from a heap-based buffer\n overflow. When receiving data from a remote server in response to\n an URN request, Squid fails to ensure that the response can fit\n within the buffer. This leads to attacker controlled data\n overflowing in the heap.\n\nCVE-2019-18677\n\n When the append_domain setting is used (because the appended\n characters do not properly interact with hostname length\n restrictions), it can inappropriately redirect traffic to origins\n it should not be delivered to. This happens because of incorrect\n message processing.\n\nCVE-2019-18678\n\n A programming error allows attackers to smuggle HTTP requests\n through frontend software to a Squid instance that splits the HTTP\n Request pipeline differently. The resulting Response messages\n corrupt caches (between a client and Squid) with\n attacker-controlled content at arbitrary URLs. Effects are isolated\n to software between the attacker client and Squid.\n There are no effects on Squid itself, nor on any upstream servers.\n The issue is related to a request header containing whitespace\n between a header name and a colon.\n\nCVE-2019-18679\n\n Due to incorrect data management, Squid is vulnerable to\n information disclosure when processing HTTP Digest Authentication.\n Nonce tokens contain the raw byte value of a pointer that sits\n within heap memory allocation. This information reduces ASLR\n protections and may aid attackers isolating memory areas to target\n for remote code execution attacks.\n\nFor Debian 8 "Jessie", these problems have been fixed in version\n3.4.8-6+deb8u9.\n\nWe recommend that you upgrade your squid3 packages.\n\nFurther information about Debian LTS security advisories, how to apply\nthese updates to your system and frequently asked questions can be\nfound at: https://wiki.debian.org/LTS", "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": "2019-12-10T15:04:42", "type": "debian", "title": "[SECURITY] [DLA 2028-1] squid3 security update", "bulletinFamily": "unix", "cvss2": {"severity": "HIGH", "exploitabilityScore": 10.0, "obtainAllPrivilege": false, "userInteractionRequired": false, "obtainOtherPrivilege": false, "cvssV2": {"accessComplexity": "LOW", "confidentialityImpact": "PARTIAL", "availabilityImpact": "PARTIAL", "integrityImpact": "PARTIAL", "baseScore": 7.5, "vectorString": "AV:N/AC:L/Au:N/C:P/I:P/A:P", "version": "2.0", "accessVector": "NETWORK", "authentication": "NONE"}, "impactScore": 6.4, "acInsufInfo": false, "obtainUserPrivilege": false}, "cvelist": ["CVE-2019-12526", "CVE-2019-18677", "CVE-2019-18678", "CVE-2019-18679"], "modified": "2019-12-10T15:04:42", "id": "DEBIAN:DLA-2028-1:AF47A", "href": "https://lists.debian.org/debian-lts-announce/2019/12/msg00011.html", "cvss": {"score": 7.5, "vector": "AV:N/AC:L/Au:N/C:P/I:P/A:P"}}, {"lastseen": "2021-10-22T11:48:48", "description": "Package : squid3\nVersion : 3.4.8-6+deb8u9\nCVE ID : CVE-2019-12526 CVE-2019-18677 CVE-2019-18678\n CVE-2019-18679\n\nIt was found that Squid, a high-performance proxy caching server for\nweb clients, has been affected by the following security\nvulnerabilities.\n\nCVE-2019-12526\n\n URN response handling in Squid suffers from a heap-based buffer\n overflow. When receiving data from a remote server in response to\n an URN request, Squid fails to ensure that the response can fit\n within the buffer. This leads to attacker controlled data\n overflowing in the heap.\n\nCVE-2019-18677\n\n When the append_domain setting is used (because the appended\n characters do not properly interact with hostname length\n restrictions), it can inappropriately redirect traffic to origins\n it should not be delivered to. This happens because of incorrect\n message processing.\n\nCVE-2019-18678\n\n A programming error allows attackers to smuggle HTTP requests\n through frontend software to a Squid instance that splits the HTTP\n Request pipeline differently. The resulting Response messages\n corrupt caches (between a client and Squid) with\n attacker-controlled content at arbitrary URLs. Effects are isolated\n to software between the attacker client and Squid.\n There are no effects on Squid itself, nor on any upstream servers.\n The issue is related to a request header containing whitespace\n between a header name and a colon.\n\nCVE-2019-18679\n\n Due to incorrect data management, Squid is vulnerable to\n information disclosure when processing HTTP Digest Authentication.\n Nonce tokens contain the raw byte value of a pointer that sits\n within heap memory allocation. This information reduces ASLR\n protections and may aid attackers isolating memory areas to target\n for remote code execution attacks.\n\nFor Debian 8 "Jessie", these problems have been fixed in version\n3.4.8-6+deb8u9.\n\nWe recommend that you upgrade your squid3 packages.\n\nFurther information about Debian LTS security advisories, how to apply\nthese updates to your system and frequently asked questions can be\nfound at: https://wiki.debian.org/LTS", "cvss3": {"exploitabilityScore": 3.9, "cvssV3": {"baseSeverity": "CRITICAL", "confidentialityImpact": "HIGH", "attackComplexity": "LOW", "scope": "UNCHANGED", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "integrityImpact": "HIGH", "baseScore": 9.8, "privilegesRequired": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "userInteraction": "NONE", "version": "3.1"}, "impactScore": 5.9}, "published": "2019-12-10T15:04:42", "type": "debian", "title": "[SECURITY] [DLA 2028-1] squid3 security update", "bulletinFamily": "unix", "cvss2": {"severity": "HIGH", "exploitabilityScore": 10.0, "obtainAllPrivilege": false, "userInteractionRequired": false, "obtainOtherPrivilege": false, "cvssV2": {"accessComplexity": "LOW", "confidentialityImpact": "PARTIAL", "availabilityImpact": "PARTIAL", "integrityImpact": "PARTIAL", "baseScore": 7.5, "vectorString": "AV:N/AC:L/Au:N/C:P/I:P/A:P", "version": "2.0", "accessVector": "NETWORK", "authentication": "NONE"}, "acInsufInfo": false, "impactScore": 6.4, "obtainUserPrivilege": false}, "cvelist": ["CVE-2019-12526", "CVE-2019-18677", "CVE-2019-18678", "CVE-2019-18679"], "modified": "2019-12-10T15:04:42", "id": "DEBIAN:DLA-2028-1:D9696", "href": "https://lists.debian.org/debian-lts-announce/2019/12/msg00011.html", "cvss": {"score": 7.5, "vector": "AV:N/AC:L/Au:N/C:P/I:P/A:P"}}, {"lastseen": "2023-12-06T18:05:24", "description": "Package : squid3\nVersion : 3.4.8-6+deb8u8\nCVE ID : CVE-2019-12525 CVE-2019-12529\n\n\nSquid, a high-performance proxy caching server for web clients, has been\nfound vulnerable to denial of service attacks associated with HTTP\nauthentication header processing.\n\nCVE-2019-12525\n\n Due to incorrect buffer management Squid is vulnerable to a denial\n of service attack when processing HTTP Digest Authentication\n credentials.\n\n Due to incorrect input validation the HTTP Request header parser for\n Digest authentication may access memory outside the allocated memory\n buffer.\n\n On systems with memory access protections this can result in the\n Squid process being terminated unexpectedly. Resulting in a denial\n of service for all clients using the proxy.\n\nCVE-2019-12529\n\n Due to incorrect buffer management Squid is vulnerable to a denial\n of service attack when processing HTTP Basic Authentication\n credentials.\n\n Due to incorrect string termination the Basic authentication\n credentials decoder may access memory outside the decode buffer.\n\n On systems with memory access protections this can result in the\n Squid process being terminated unexpectedly. Resulting in a denial\n of service for all clients using the proxy.\n\nFor Debian 8 "Jessie", these problems have been fixed in version\n3.4.8-6+deb8u8.\n\nWe recommend that you upgrade your squid3 packages.\n\nFurther information about Debian LTS security advisories, how to apply\nthese updates to your system and frequently asked questions can be\nfound at: https://wiki.debian.org/LTS\nAttachment:\nsignature.asc\nDescription: PGP signature\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": "2019-07-20T23:09:33", "type": "debian", "title": "[SECURITY] [DLA 1858-1] squid3 security update", "bulletinFamily": "unix", "cvss2": {"severity": "HIGH", "exploitabilityScore": 10.0, "obtainAllPrivilege": false, "userInteractionRequired": false, "obtainOtherPrivilege": false, "cvssV2": {"accessComplexity": "LOW", "confidentialityImpact": "PARTIAL", "availabilityImpact": "PARTIAL", "integrityImpact": "PARTIAL", "baseScore": 7.5, "vectorString": "AV:N/AC:L/Au:N/C:P/I:P/A:P", "version": "2.0", "accessVector": "NETWORK", "authentication": "NONE"}, "impactScore": 6.4, "acInsufInfo": false, "obtainUserPrivilege": false}, "cvelist": ["CVE-2019-12525", "CVE-2019-12529"], "modified": "2019-07-20T23:09:33", "id": "DEBIAN:DLA-1858-1:1A45F", "href": "https://lists.debian.org/debian-lts-announce/2019/07/msg00018.html", "cvss": {"score": 7.5, "vector": "AV:N/AC:L/Au:N/C:P/I:P/A:P"}}, {"lastseen": "2021-10-22T11:06:12", "description": "- -----------------------------------------------------------------------\nDebian LTS Advisory DLA-2278-2 debian-lts@lists.debian.org\nhttps://www.debian.org/lts/security/ Markus Koschany\nAugust 13, 2020 https://wiki.debian.org/LTS\n- -------------------------------------------------------------------------\n\nPackage : squid3\nVersion : 3.5.23-5+deb9u3\nDebian Bug : 965012\n\nThe update of squid3 released as DLA-2278-1 contained an incomplete\nfix for CVE-2019-12523 that prevented services which rely on the icap\nor ecap protocol to function properly. Updated squid3 packages are now\navailable to correct this issue.\n\nIn addition the patch for CVE-2019-12529 was improved to use more code\nfrom Debian's cryptographic nettle library.\n\nFor Debian 9 stretch, this problem has been fixed in version\n3.5.23-5+deb9u3.\n\nWe recommend that you upgrade your squid3 packages.\n\nFor the detailed security status of squid3 please refer to\nits security tracker page at:\nhttps://security-tracker.debian.org/tracker/squid3\n\nFurther information about Debian LTS security advisories, how to apply\nthese updates to your system and frequently asked questions can be\nfound at: https://wiki.debian.org/LTS", "cvss3": {"exploitabilityScore": 3.9, "cvssV3": {"baseSeverity": "CRITICAL", "confidentialityImpact": "HIGH", "attackComplexity": "LOW", "scope": "UNCHANGED", "attackVector": "NETWORK", "availabilityImpact": "NONE", "integrityImpact": "HIGH", "baseScore": 9.1, "privilegesRequired": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N", "userInteraction": "NONE", "version": "3.1"}, "impactScore": 5.2}, "published": "2020-08-13T20:42:27", "type": "debian", "title": "[SECURITY] [DLA 2278-2] squid3 regression update", "bulletinFamily": "unix", "cvss2": {"severity": "MEDIUM", "exploitabilityScore": 10.0, "obtainAllPrivilege": false, "userInteractionRequired": false, "obtainOtherPrivilege": false, "cvssV2": {"accessComplexity": "LOW", "confidentialityImpact": "PARTIAL", "availabilityImpact": "NONE", "integrityImpact": "PARTIAL", "baseScore": 6.4, "vectorString": "AV:N/AC:L/Au:N/C:P/I:P/A:N", "version": "2.0", "accessVector": "NETWORK", "authentication": "NONE"}, "acInsufInfo": false, "impactScore": 4.9, "obtainUserPrivilege": false}, "cvelist": ["CVE-2019-12523", "CVE-2019-12529"], "modified": "2020-08-13T20:42:27", "id": "DEBIAN:DLA-2278-2:038A6", "href": "https://lists.debian.org/debian-lts-announce/2020/08/msg00022.html", "cvss": {"score": 6.4, "vector": "AV:N/AC:L/Au:N/C:P/I:P/A:N"}}, {"lastseen": "2023-12-06T17:32:44", "description": "- -----------------------------------------------------------------------\nDebian LTS Advisory DLA-2278-2 debian-lts@lists.debian.org\nhttps://www.debian.org/lts/security/ Markus Koschany\nAugust 13, 2020 https://wiki.debian.org/LTS\n- -------------------------------------------------------------------------\n\nPackage : squid3\nVersion : 3.5.23-5+deb9u3\nDebian Bug : 965012\n\nThe update of squid3 released as DLA-2278-1 contained an incomplete\nfix for CVE-2019-12523 that prevented services which rely on the icap\nor ecap protocol to function properly. Updated squid3 packages are now\navailable to correct this issue.\n\nIn addition the patch for CVE-2019-12529 was improved to use more code\nfrom Debian's cryptographic nettle library.\n\nFor Debian 9 stretch, this problem has been fixed in version\n3.5.23-5+deb9u3.\n\nWe recommend that you upgrade your squid3 packages.\n\nFor the detailed security status of squid3 please refer to\nits security tracker page at:\nhttps://security-tracker.debian.org/tracker/squid3\n\nFurther information about Debian LTS security advisories, how to apply\nthese updates to your system and frequently asked questions can be\nfound at: https://wiki.debian.org/LTS", "cvss3": {"exploitabilityScore": 3.9, "cvssV3": {"baseSeverity": "CRITICAL", "confidentialityImpact": "HIGH", "attackComplexity": "LOW", "scope": "UNCHANGED", "attackVector": "NETWORK", "availabilityImpact": "NONE", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "baseScore": 9.1, "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N", "version": "3.1", "userInteraction": "NONE"}, "impactScore": 5.2}, "published": "2020-08-13T20:42:27", "type": "debian", "title": "[SECURITY] [DLA 2278-2] squid3 regression update", "bulletinFamily": "unix", "cvss2": {"severity": "MEDIUM", "exploitabilityScore": 10.0, "obtainAllPrivilege": false, "userInteractionRequired": false, "obtainOtherPrivilege": false, "cvssV2": {"accessComplexity": "LOW", "confidentialityImpact": "PARTIAL", "availabilityImpact": "NONE", "integrityImpact": "PARTIAL", "baseScore": 6.4, "vectorString": "AV:N/AC:L/Au:N/C:P/I:P/A:N", "version": "2.0", "accessVector": "NETWORK", "authentication": "NONE"}, "impactScore": 4.9, "acInsufInfo": false, "obtainUserPrivilege": false}, "cvelist": ["CVE-2019-12523", "CVE-2019-12529"], "modified": "2020-08-13T20:42:27", "id": "DEBIAN:DLA-2278-2:B1B82", "href": "https://lists.debian.org/debian-lts-announce/2020/08/msg00022.html", "cvss": {"score": 6.4, "vector": "AV:N/AC:L/Au:N/C:P/I:P/A:N"}}, {"lastseen": "2021-10-21T18:36:33", "description": "- -------------------------------------------------------------------------\nDebian Security Advisory DSA-4507-1 security@debian.org\nhttps://www.debian.org/security/ Salvatore Bonaccorso\nAugust 24, 2019 https://www.debian.org/security/faq\n- -------------------------------------------------------------------------\n\nPackage : squid\nCVE ID : CVE-2019-12525 CVE-2019-12527 CVE-2019-12529 CVE-2019-12854\n CVE-2019-13345\nDebian Bug : 931478\n\nSeveral vulnerabilities were discovered in Squid, a fully featured web\nproxy cache. The flaws in the HTTP Digest Authentication processing, the\nHTTP Basic Authentication processing and in the cachemgr.cgi allowed\nremote attackers to perform denial of service and cross-site scripting\nattacks, and potentially the execution of arbitrary code.\n\nFor the stable distribution (buster), these problems have been fixed in\nversion 4.6-1+deb10u1.\n\nWe recommend that you upgrade your squid packages.\n\nFor the detailed security status of squid please refer to its security\ntracker page at:\nhttps://security-tracker.debian.org/tracker/squid\n\nFurther information about Debian Security Advisories, how to apply\nthese updates to your system and frequently asked questions can be\nfound at: https://www.debian.org/security/\n\nMailing list: debian-security-announce@lists.debian.org", "cvss3": {"exploitabilityScore": 3.9, "cvssV3": {"baseSeverity": "CRITICAL", "confidentialityImpact": "HIGH", "attackComplexity": "LOW", "scope": "UNCHANGED", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "integrityImpact": "HIGH", "baseScore": 9.8, "privilegesRequired": "NONE", "vectorString": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "userInteraction": "NONE", "version": "3.0"}, "impactScore": 5.9}, "published": "2019-08-24T11:46:36", "type": "debian", "title": "[SECURITY] [DSA 4507-1] squid security update", "bulletinFamily": "unix", "cvss2": {"severity": "HIGH", "exploitabilityScore": 10.0, "obtainAllPrivilege": false, "userInteractionRequired": false, "obtainOtherPrivilege": false, "cvssV2": {"accessComplexity": "LOW", "confidentialityImpact": "PARTIAL", "availabilityImpact": "PARTIAL", "integrityImpact": "PARTIAL", "baseScore": 7.5, "vectorString": "AV:N/AC:L/Au:N/C:P/I:P/A:P", "version": "2.0", "accessVector": "NETWORK", "authentication": "NONE"}, "acInsufInfo": false, "impactScore": 6.4, "obtainUserPrivilege": false}, "cvelist": ["CVE-2019-12525", "CVE-2019-12527", "CVE-2019-12529", "CVE-2019-12854", "CVE-2019-13345"], "modified": "2019-08-24T11:46:36", "id": "DEBIAN:DSA-4507-1:C3813", "href": "https://lists.debian.org/debian-security-announce/2019/msg00155.html", "cvss": {"score": 7.5, "vector": "AV:N/AC:L/Au:N/C:P/I:P/A:P"}}, {"lastseen": "2023-12-07T10:42:47", "description": "- -------------------------------------------------------------------------\nDebian Security Advisory DSA-4507-1 security@debian.org\nhttps://www.debian.org/security/ Salvatore Bonaccorso\nAugust 24, 2019 https://www.debian.org/security/faq\n- -------------------------------------------------------------------------\n\nPackage : squid\nCVE ID : CVE-2019-12525 CVE-2019-12527 CVE-2019-12529 CVE-2019-12854\n CVE-2019-13345\nDebian Bug : 931478\n\nSeveral vulnerabilities were discovered in Squid, a fully featured web\nproxy cache. The flaws in the HTTP Digest Authentication processing, the\nHTTP Basic Authentication processing and in the cachemgr.cgi allowed\nremote attackers to perform denial of service and cross-site scripting\nattacks, and potentially the execution of arbitrary code.\n\nFor the stable distribution (buster), these problems have been fixed in\nversion 4.6-1+deb10u1.\n\nWe recommend that you upgrade your squid packages.\n\nFor the detailed security status of squid please refer to its security\ntracker page at:\nhttps://security-tracker.debian.org/tracker/squid\n\nFurther information about Debian Security Advisories, how to apply\nthese updates to your system and frequently asked questions can be\nfound at: https://www.debian.org/security/\n\nMailing list: debian-security-announce@lists.debian.org", "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": "2019-08-24T11:46:36", "type": "debian", "title": "[SECURITY] [DSA 4507-1] squid security update", "bulletinFamily": "unix", "cvss2": {"severity": "HIGH", "exploitabilityScore": 10.0, "obtainAllPrivilege": false, "userInteractionRequired": false, "obtainOtherPrivilege": false, "cvssV2": {"accessComplexity": "LOW", "confidentialityImpact": "PARTIAL", "availabilityImpact": "PARTIAL", "integrityImpact": "PARTIAL", "baseScore": 7.5, "vectorString": "AV:N/AC:L/Au:N/C:P/I:P/A:P", "version": "2.0", "accessVector": "NETWORK", "authentication": "NONE"}, "impactScore": 6.4, "acInsufInfo": false, "obtainUserPrivilege": false}, "cvelist": ["CVE-2019-12525", "CVE-2019-12527", "CVE-2019-12529", "CVE-2019-12854", "CVE-2019-13345"], "modified": "2019-08-24T11:46:36", "id": "DEBIAN:DSA-4507-1:28A22", "href": "https://lists.debian.org/debian-security-announce/2019/msg00155.html", "cvss": {"score": 7.5, "vector": "AV:N/AC:L/Au:N/C:P/I:P/A:P"}}], "openvas": [{"lastseen": "2020-07-21T20:05:15", "description": "The remote host is missing an update for the ", "cvss3": {}, "published": "2020-07-17T00:00:00", "type": "openvas", "title": "Debian LTS: Security Advisory for squid3 (DLA-2278-1)", "bulletinFamily": "scanner", "cvss2": {}, "cvelist": ["CVE-2019-12519", "CVE-2019-12529", "CVE-2019-12528", "CVE-2019-18677", "CVE-2019-12523", "CVE-2019-13345", "CVE-2019-18678", "CVE-2019-12524", "CVE-2019-12520", "CVE-2019-12521", "CVE-2019-18676", "CVE-2019-18860", "CVE-2020-8450", "CVE-2018-19132", "CVE-2019-12525", "CVE-2020-11945", "CVE-2019-12526", "CVE-2019-18679", "CVE-2020-8449"], "modified": "2020-07-17T00:00:00", "id": "OPENVAS:1361412562310892278", "href": "http://plugins.openvas.org/nasl.php?oid=1361412562310892278", "sourceData": "# Copyright (C) 2020 Greenbone Networks GmbH\n# Some text descriptions might be excerpted from (a) referenced\n# source(s), and are Copyright (C) by the respective right holder(s).\n#\n# SPDX-License-Identifier: GPL-2.0-or-later\n#\n# This program is free software; you can redistribute it and/or\n# modify it under the terms of the GNU General Public License\n# as published by the Free Software Foundation; either version 2\n# of the License, or (at your option) any later version.\n#\n# This program is distributed in the hope that it will be useful,\n# but WITHOUT ANY WARRANTY; without even the implied warranty of\n# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. 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foreach var module_array ( appstreams[module] ) {\n var repo_relative_urls = NULL;\n if (!empty_or_null(module_array['repo_relative_urls'])) repo_relative_urls = module_array['repo_relative_urls'];\n var enterprise_linux_flag = rhel_repo_urls_has_content_dist_rhel(repo_urls:repo_relative_urls);\n foreach var package_array ( module_array['pkgs'] ) {\n var reference = NULL;\n var _release = NULL;\n var sp = NULL;\n var _cpu = NULL;\n var el_string = NULL;\n var rpm_spec_vers_cmp = NULL;\n var epoch = NULL;\n var allowmaj = NULL;\n var exists_check = NULL;\n if (!empty_or_null(package_array['reference'])) reference = package_array['reference'];\n if (!empty_or_null(package_array['release'])) _release = 'RHEL' + package_array['release'];\n if (!empty_or_null(package_array['sp']) && !enterprise_linux_flag) sp = package_array['sp'];\n if (!empty_or_null(package_array['cpu'])) _cpu = package_array['cpu'];\n if (!empty_or_null(package_array['el_string'])) el_string = 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redhat_report_repo_caveat();\n else extra = rpm_report_get();\n security_report_v4(\n port : 0,\n severity : SECURITY_HOLE,\n extra : extra\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, 'libecap / libecap-devel / squid');\n}\n", "cvss": {"score": 0.0, "vector": "NONE"}}, {"lastseen": "2023-09-10T16:45:58", "description": "The remote Oracle Linux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the ELSA-2020-4743 advisory.\n\n - An issue was discovered in Squid before 4.10. It allows a crafted FTP server to trigger disclosure of sensitive information from heap memory, such as information associated with other users' sessions or non- Squid processes. (CVE-2019-12528)\n\n - An issue was discovered in Squid before 4.10. Due to incorrect buffer management, a remote client can cause a buffer overflow in a Squid instance acting as a reverse proxy. (CVE-2020-8450)\n\n - An issue was discovered in http/ContentLengthInterpreter.cc in Squid before 4.12 and 5.x before 5.0.3. A Request Smuggling and Poisoning attack can succeed against the HTTP cache. The client sends an HTTP request with a Content-Length header containing +\\ - or an uncommon shell whitespace character prefix to the length field-value. (CVE-2020-15049)\n\n - Squid before 4.13 and 5.x before 5.0.4 allows a trusted peer to perform Denial of Service by consuming all available CPU cycles during handling of a crafted Cache Digest response message. This only occurs when cache_peer is used with the cache digests feature. The problem exists because peerDigestHandleReply() livelocking in peer_digest.cc mishandles EOF. (CVE-2020-24606)\n\n - An issue was discovered in Squid before 4.10. Due to incorrect input validation, it can interpret crafted HTTP requests in unexpected ways to access server resources prohibited by earlier security filters.\n (CVE-2020-8449)\n\n - An issue was discovered in Squid through 4.7. When Squid is parsing ESI, it keeps the ESI elements in ESIContext. ESIContext contains a buffer for holding a stack of ESIElements. When a new ESIElement is parsed, it is added via addStackElement. addStackElement has a check for the number of elements in this buffer, but it's off by 1, leading to a Heap Overflow of 1 element. The overflow is within the same structure so it can't affect adjacent memory blocks, and thus just leads to a crash while processing.\n (CVE-2019-12521)\n\n - An issue was discovered in Squid before 4.9. When handling a URN request, a corresponding HTTP request is made. This HTTP request doesn't go through the access checks that incoming HTTP requests go through. This causes all access checks to be bypassed and allows access to restricted HTTP servers, e.g., an attacker can connect to HTTP servers that only listen on localhost. (CVE-2019-12523)\n\n - An issue was discovered in Squid through 4.7. When handling requests from users, Squid checks its rules to see if the request should be denied. Squid by default comes with rules to block access to the Cache Manager, which serves detailed server information meant for the maintainer. This rule is implemented via url_regex. The handler for url_regex rules URL decodes an incoming request. This allows an attacker to encode their URL to bypass the url_regex check, and gain access to the blocked resource. (CVE-2019-12524)\n\n - An issue was discovered in Squid before 4.9. URN response handling in Squid suffers from a heap-based buffer overflow. When receiving data from a remote server in response to an URN request, Squid fails to ensure that the response can fit within the buffer. This leads to attacker controlled data overflowing in the heap. (CVE-2019-12526)\n\n - An issue was discovered in Squid 2.x through 2.7.STABLE9, 3.x through 3.5.28, and 4.x through 4.7. When Squid is configured to use Basic Authentication, the Proxy-Authorization header is parsed via uudecode.\n uudecode determines how many bytes will be decoded by iterating over the input and checking its table. The length is then used to start decoding the string. There are no checks to ensure that the length it calculates isn't greater than the input buffer. This leads to adjacent memory being decoded as well. An attacker would not be able to retrieve the decoded data unless the Squid maintainer had configured the display of usernames on error pages. (CVE-2019-12529)\n\n - Squid before 4.9, when certain web browsers are used, mishandles HTML in the host (aka hostname) parameter to cachemgr.cgi. (CVE-2019-18860)\n\n - An issue was discovered in Squid before 4.12 and 5.x before 5.0.3. Due to use of a potentially dangerous function, Squid and the default certificate validation helper are vulnerable to a Denial of Service when opening a TLS connection to an attacker-controlled server for HTTPS. This occurs because unrecognized error values are mapped to NULL, but later code expects that each error value is mapped to a valid error string. (CVE-2020-14058)\n\n - An issue was discovered in Squid through 4.7 and 5. When receiving a request, Squid checks its cache to see if it can serve up a response. It does this by making a MD5 hash of the absolute URL of the request.\n If found, it servers the request. The absolute URL can include the decoded UserInfo (username and password) for certain protocols. This decoded info is prepended to the domain. This allows an attacker to provide a username that has special characters to delimit the domain, and treat the rest of the URL as a path or query string. An attacker could first make a request to their domain using an encoded username, then when a request for the target domain comes in that decodes to the exact URL, it will serve the attacker's HTML instead of the real HTML. On Squid servers that also act as reverse proxies, this allows an attacker to gain access to features that only reverse proxies can use, such as ESI. (CVE-2019-12520)\n\n - Due to incorrect string termination, Squid cachemgr.cgi 4.0 through 4.7 may access unallocated memory. On systems with memory access protections, this can cause the CGI process to terminate unexpectedly, resulting in a denial of service for all clients using it. (CVE-2019-12854)\n\n - An issue was discovered in Squid 3.x and 4.x through 4.8. Due to incorrect input validation, there is a heap-based buffer overflow that can result in Denial of Service to all clients using the proxy. Severity is high due to this vulnerability occurring before normal security checks; any remote client that can reach the proxy port can trivially perform the attack via a crafted URI scheme. (CVE-2019-18676)\n\n - An issue was discovered in Squid 3.x and 4.x through 4.8 when the append_domain setting is used (because the appended characters do not properly interact with hostname length restrictions). Due to incorrect message processing, it can inappropriately redirect traffic to origins it should not be delivered to.\n (CVE-2019-18677)\n\n - An issue was discovered in Squid 3.x and 4.x through 4.8. It allows attackers to smuggle HTTP requests through frontend software to a Squid instance that splits the HTTP Request pipeline differently. The resulting Response messages corrupt caches (between a client and Squid) with attacker-controlled content at arbitrary URLs. Effects are isolated to software between the attacker client and Squid. There are no effects on Squid itself, nor on any upstream servers. The issue is related to a request header containing whitespace between a header name and a colon. (CVE-2019-18678)\n\n - An issue was discovered in Squid 2.x, 3.x, and 4.x through 4.8. Due to incorrect data management, it is vulnerable to information disclosure when processing HTTP Digest Authentication. Nonce tokens contain the raw byte value of a pointer that sits within heap memory allocation. This information reduces ASLR protections and may aid attackers isolating memory areas to target for remote code execution attacks.\n (CVE-2019-18679)\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": "2023-09-07T00:00:00", "type": "nessus", "title": "Oracle Linux 8 : squid:4 (ELSA-2020-4743)", "bulletinFamily": "scanner", "cvss2": {}, "cvelist": ["CVE-2019-12520", "CVE-2019-12521", "CVE-2019-12523", "CVE-2019-12524", "CVE-2019-12526", "CVE-2019-12528", "CVE-2019-12529", "CVE-2019-12854", "CVE-2019-18676", "CVE-2019-18677", "CVE-2019-18678", "CVE-2019-18679", "CVE-2019-18860", "CVE-2020-14058", "CVE-2020-15049", "CVE-2020-24606", "CVE-2020-8449", "CVE-2020-8450"], "modified": "2023-09-07T00:00:00", "cpe": ["cpe:/o:oracle:linux:8", "p-cpe:/a:oracle:linux:libecap", "p-cpe:/a:oracle:linux:libecap-devel", "p-cpe:/a:oracle:linux:squid"], "id": "ORACLELINUX_ELSA-2020-4743.NASL", "href": "https://www.tenable.com/plugins/nessus/180917", "sourceData": "#%NASL_MIN_LEVEL 80900\n##\n# (C) Tenable, Inc.\n#\n# The descriptive text and package checks in this plugin were\n# extracted from Oracle Linux Security Advisory ELSA-2020-4743.\n##\n\ninclude('compat.inc');\n\nif (description)\n{\n script_id(180917);\n script_version(\"1.0\");\n script_set_attribute(attribute:\"plugin_modification_date\", value:\"2023/09/07\");\n\n script_cve_id(\n \"CVE-2019-12520\",\n \"CVE-2019-12521\",\n \"CVE-2019-12523\",\n \"CVE-2019-12524\",\n \"CVE-2019-12526\",\n \"CVE-2019-12528\",\n \"CVE-2019-12529\",\n \"CVE-2019-12854\",\n \"CVE-2019-18676\",\n \"CVE-2019-18677\",\n \"CVE-2019-18678\",\n \"CVE-2019-18679\",\n \"CVE-2019-18860\",\n \"CVE-2020-8449\",\n \"CVE-2020-8450\",\n \"CVE-2020-14058\",\n \"CVE-2020-15049\",\n \"CVE-2020-24606\"\n );\n\n script_name(english:\"Oracle Linux 8 : squid:4 (ELSA-2020-4743)\");\n\n script_set_attribute(attribute:\"synopsis\", value:\n\"The remote Oracle Linux host is missing one or more security updates.\");\n script_set_attribute(attribute:\"description\", value:\n\"The remote Oracle Linux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the\nELSA-2020-4743 advisory.\n\n - An issue was discovered in Squid before 4.10. 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SUSE SLES11 Security Update : squid3 (SUSE-SU-2020:14460-1)

Description

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