{ "document": { "aggregate_severity": { "text": "Important" }, "category": "csaf_security_advisory", "csaf_version": "2.0", "distribution": { "text": "TuxCare License Agreement", "tlp": { "label": "WHITE", "url": "https://www.first.org/tlp/" } }, "lang": "en", "notes": [ { "category": "legal_disclaimer", "text": "This content is licensed under the Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0/). If you distribute this content, or a modified version of it, you must provide attribution to Cloud Linux Inc. and provide a link to the original.", "title": "Terms of Use" }, { "category": "details", "text": "* SECURITY UPDATE: Denial of Service in ICP request handling via double\n rfc1738_escape() call causing heap use-after-free\n - debian/patches/CVE-2026-33526.patch: Remove redundant rfc1738_escape()\n call in icpGetRequest()\n - CVE-2026-33526\n * SECURITY UPDATE: Denial of Service in ICP v3 query handling via\n use-after-free of HttpRequest object\n - debian/patches/CVE-2026-32748.patch: Add proper HTTPMSGLOCK/HTTPMSGUNLOCK\n to doV3Query() to match doV2Query() locking pattern\n - CVE-2026-32748\n * SECURITY UPDATE: Out-of-bounds read in ICP message handling allows\n information disclosure\n - debian/patches/CVE-2026-33515.patch: Add icpGetUrl() validation function\n to check packet bounds and NUL-termination of URLs in ICP messages\n - CVE-2026-33515", "title": "Details" } ], "publisher": { "category": "vendor", "contact_details": "https://tuxcare.com/contact/", "name": "TuxCare", "namespace": "https://tuxcare.com/" }, "references": [ { "category": "self", "summary": "https://cve.tuxcare.com/els/releases/CLSA-2026:1774947465", "url": "https://cve.tuxcare.com/els/releases/CLSA-2026:1774947465" }, { "category": "self", "summary": "Canonical URL", "url": "https://security.tuxcare.com/csaf/v2/els_os/debian10els/advisories/2026/clsa-2026_1774947465.json" } ], "tracking": { "current_release_date": "2026-03-31T08:58:31Z", "generator": { "date": "2026-03-31T08:58:31Z", "engine": { "name": "pyCSAF" } }, "id": "CLSA-2026:1774947465", "initial_release_date": "2026-03-31T08:58:31Z", "revision_history": [ { "date": "2026-03-31T08:58:31Z", "number": "1", "summary": "Initial version" } ], "status": "final", "version": "1" }, "title": "Fix CVE(s): CVE-2026-32748, CVE-2026-33515, CVE-2026-33526" }, "product_tree": { "branches": [ { "branches": [ { "branches": [ { "category": "product_name", "name": "Debian None", "product": { "name": "Debian None", "product_id": "Debian-10", "product_identification_helper": { "cpe": "cpe:2.3:o:debian:debian_linux:10:*:*:*:*:*:*:*" } } } ], "category": "product_family", "name": "Debian" } ], "category": "vendor", "name": "Software in the Public Interest, Inc." }, { "branches": [ { "branches": [ { "category": "product_version", "name": "squid-cgi-0:4.6-1+deb10u10+tuxcare.els4.amd64", "product": { "name": "squid-cgi-0:4.6-1+deb10u10+tuxcare.els4.amd64", "product_id": "squid-cgi-0:4.6-1+deb10u10+tuxcare.els4.amd64", "product_identification_helper": { "purl": "pkg:deb/tuxcare/squid-cgi@4.6-1%2Bdeb10u10%2Btuxcare.els4?arch=amd64" } } }, { "category": "product_version", "name": "squid-purge-0:4.6-1+deb10u10+tuxcare.els4.amd64", "product": { "name": "squid-purge-0:4.6-1+deb10u10+tuxcare.els4.amd64", "product_id": "squid-purge-0:4.6-1+deb10u10+tuxcare.els4.amd64", "product_identification_helper": { "purl": "pkg:deb/tuxcare/squid-purge@4.6-1%2Bdeb10u10%2Btuxcare.els4?arch=amd64" } } }, { "category": "product_version", "name": "squidclient-0:4.6-1+deb10u10+tuxcare.els4.amd64", "product": { "name": "squidclient-0:4.6-1+deb10u10+tuxcare.els4.amd64", "product_id": "squidclient-0:4.6-1+deb10u10+tuxcare.els4.amd64", "product_identification_helper": { "purl": "pkg:deb/tuxcare/squidclient@4.6-1%2Bdeb10u10%2Btuxcare.els4?arch=amd64" } } }, { "category": "product_version", "name": "squid-0:4.6-1+deb10u10+tuxcare.els4.amd64", "product": { "name": "squid-0:4.6-1+deb10u10+tuxcare.els4.amd64", "product_id": "squid-0:4.6-1+deb10u10+tuxcare.els4.amd64", "product_identification_helper": { "purl": "pkg:deb/tuxcare/squid@4.6-1%2Bdeb10u10%2Btuxcare.els4?arch=amd64" } } } ], "category": "architecture", "name": "amd64" }, { "branches": [ { "category": "product_version", "name": "squid-common-0:4.6-1+deb10u10+tuxcare.els4.all", "product": { "name": "squid-common-0:4.6-1+deb10u10+tuxcare.els4.all", "product_id": "squid-common-0:4.6-1+deb10u10+tuxcare.els4.all", "product_identification_helper": { "purl": "pkg:deb/tuxcare/squid-common@4.6-1%2Bdeb10u10%2Btuxcare.els4?arch=all" } } }, { "category": "product_version", "name": "squid3-0:4.6-1+deb10u10+tuxcare.els4.all", "product": { "name": "squid3-0:4.6-1+deb10u10+tuxcare.els4.all", "product_id": "squid3-0:4.6-1+deb10u10+tuxcare.els4.all", "product_identification_helper": { "purl": "pkg:deb/tuxcare/squid3@4.6-1%2Bdeb10u10%2Btuxcare.els4?arch=all" } } } ], "category": "architecture", "name": "all" } ], "category": "vendor", "name": "TuxCare" } ], "relationships": [ { "category": "default_component_of", "full_product_name": { "name": "squid-cgi-0:4.6-1+deb10u10+tuxcare.els4.amd64 as a component of Debian None", "product_id": "Debian-10:squid-cgi-0:4.6-1+deb10u10+tuxcare.els4.amd64" }, "product_reference": "squid-cgi-0:4.6-1+deb10u10+tuxcare.els4.amd64", "relates_to_product_reference": "Debian-10" }, { "category": "default_component_of", "full_product_name": { "name": "squid-common-0:4.6-1+deb10u10+tuxcare.els4.all as a component of Debian None", "product_id": "Debian-10:squid-common-0:4.6-1+deb10u10+tuxcare.els4.all" }, "product_reference": "squid-common-0:4.6-1+deb10u10+tuxcare.els4.all", "relates_to_product_reference": "Debian-10" }, { "category": "default_component_of", "full_product_name": { "name": "squid-purge-0:4.6-1+deb10u10+tuxcare.els4.amd64 as a component of Debian None", "product_id": "Debian-10:squid-purge-0:4.6-1+deb10u10+tuxcare.els4.amd64" }, "product_reference": "squid-purge-0:4.6-1+deb10u10+tuxcare.els4.amd64", "relates_to_product_reference": "Debian-10" }, { "category": "default_component_of", "full_product_name": { "name": "squidclient-0:4.6-1+deb10u10+tuxcare.els4.amd64 as a component of Debian None", "product_id": "Debian-10:squidclient-0:4.6-1+deb10u10+tuxcare.els4.amd64" }, "product_reference": "squidclient-0:4.6-1+deb10u10+tuxcare.els4.amd64", "relates_to_product_reference": "Debian-10" }, { "category": "default_component_of", "full_product_name": { "name": "squid3-0:4.6-1+deb10u10+tuxcare.els4.all as a component of Debian None", "product_id": "Debian-10:squid3-0:4.6-1+deb10u10+tuxcare.els4.all" }, "product_reference": "squid3-0:4.6-1+deb10u10+tuxcare.els4.all", "relates_to_product_reference": "Debian-10" }, { "category": "default_component_of", "full_product_name": { "name": "squid-0:4.6-1+deb10u10+tuxcare.els4.amd64 as a component of Debian None", "product_id": "Debian-10:squid-0:4.6-1+deb10u10+tuxcare.els4.amd64" }, "product_reference": "squid-0:4.6-1+deb10u10+tuxcare.els4.amd64", "relates_to_product_reference": "Debian-10" } ] }, "vulnerabilities": [ { "cve": "CVE-2026-33526", "cwe": { "id": "CWE-416", "name": "Use After Free" }, "notes": [ { "category": "description", "text": "Squid is a caching proxy for the Web. Prior to version 7.5, due to heap Use-After-Free, Squid is vulnerable to Denial of Service when handling ICP traffic. This problem allows a remote attacker to perform a reliable and repeatable Denial of Service attack against the Squid service using ICP protocol. This attack is limited to Squid deployments that explicitly enable ICP support (i.e. configure non-zero `icp_port`). This problem _cannot_ be mitigated by denying ICP queries using `icp_access` rules. Version 7.5 contains a patch.", "title": "Vulnerability description" }, { "category": "general", "text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.", "title": "CVSS score applicability" } ], "product_status": { "fixed": [ "Debian-10:squid-0:4.6-1+deb10u10+tuxcare.els4.amd64", "Debian-10:squid-cgi-0:4.6-1+deb10u10+tuxcare.els4.amd64", "Debian-10:squid-common-0:4.6-1+deb10u10+tuxcare.els4.all", "Debian-10:squid-purge-0:4.6-1+deb10u10+tuxcare.els4.amd64", "Debian-10:squid3-0:4.6-1+deb10u10+tuxcare.els4.all", "Debian-10:squidclient-0:4.6-1+deb10u10+tuxcare.els4.amd64" ] }, "references": [ { "category": "self", "summary": "Canonical URL", "url": "https://cve.tuxcare.com/els/cve/CVE-2026-33526" }, { "category": "external", "summary": "https://github.com/squid-cache/squid/commit/8a7d42f9d44befb8fcbbb619505587c8de6a1e91", "url": "https://github.com/squid-cache/squid/commit/8a7d42f9d44befb8fcbbb619505587c8de6a1e91" }, { "category": "external", "summary": "https://github.com/squid-cache/squid/security/advisories/GHSA-hpfx-h48q-gvwg", "url": "https://github.com/squid-cache/squid/security/advisories/GHSA-hpfx-h48q-gvwg" }, { "category": "external", "summary": "http://www.openwall.com/lists/oss-security/2026/03/25/2", "url": "http://www.openwall.com/lists/oss-security/2026/03/25/2" } ], "release_date": "2026-03-26T01:16:00Z", "remediations": [ { "category": "vendor_fix", "date": "2026-03-31T08:57:47.935635Z", "details": "Details on how to apply the fix are available at: https://cve.tuxcare.com/els/releases/CLSA-2026:1774947465", "product_ids": [ "Debian-10:squid-0:4.6-1+deb10u10+tuxcare.els4.amd64", "Debian-10:squid-cgi-0:4.6-1+deb10u10+tuxcare.els4.amd64", "Debian-10:squid-common-0:4.6-1+deb10u10+tuxcare.els4.all", "Debian-10:squid-purge-0:4.6-1+deb10u10+tuxcare.els4.amd64", "Debian-10:squid3-0:4.6-1+deb10u10+tuxcare.els4.all", "Debian-10:squidclient-0:4.6-1+deb10u10+tuxcare.els4.amd64" ], "url": "https://cve.tuxcare.com/els/releases/CLSA-2026:1774947465" } ], "scores": [ { "cvss_v3": { "attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 7.5, "baseSeverity": "HIGH", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "version": "3.1" }, "products": [ "Debian-10:squid-0:4.6-1+deb10u10+tuxcare.els4.amd64", "Debian-10:squid-cgi-0:4.6-1+deb10u10+tuxcare.els4.amd64", "Debian-10:squid-common-0:4.6-1+deb10u10+tuxcare.els4.all", "Debian-10:squid-purge-0:4.6-1+deb10u10+tuxcare.els4.amd64", "Debian-10:squid3-0:4.6-1+deb10u10+tuxcare.els4.all", "Debian-10:squidclient-0:4.6-1+deb10u10+tuxcare.els4.amd64" ] } ], "threats": [ { "category": "impact", "details": "Important" } ] }, { "cve": "CVE-2026-32748", "cwe": { "id": "CWE-413", "name": "Improper Resource Locking" }, "notes": [ { "category": "description", "text": "Squid is a caching proxy for the Web. Prior to version 7.5, due to premature release of resource during expected lifetime and heap Use-After-Free bugs, Squid is vulnerable to Denial of Service when handling ICP traffic. This problem allows a remote attacker to perform a reliable and repeatable Denial of Service attack against the Squid service using ICP protocol. This attack is limited to Squid deployments that explicitly enable ICP support (i.e. configure non-zero `icp_port`). This problem _cannot_ be mitigated by denying ICP queries using `icp_access` rules. This bug is fixed in Squid version 7.5.", "title": "Vulnerability description" }, { "category": "general", "text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.", "title": "CVSS score applicability" } ], "product_status": { "fixed": [ "Debian-10:squid-0:4.6-1+deb10u10+tuxcare.els4.amd64", "Debian-10:squid-cgi-0:4.6-1+deb10u10+tuxcare.els4.amd64", "Debian-10:squid-common-0:4.6-1+deb10u10+tuxcare.els4.all", "Debian-10:squid-purge-0:4.6-1+deb10u10+tuxcare.els4.amd64", "Debian-10:squid3-0:4.6-1+deb10u10+tuxcare.els4.all", "Debian-10:squidclient-0:4.6-1+deb10u10+tuxcare.els4.amd64" ] }, "references": [ { "category": "self", "summary": "Canonical URL", "url": "https://cve.tuxcare.com/els/cve/CVE-2026-32748" }, { "category": "external", "summary": "https://github.com/squid-cache/squid/commit/703e07d25ca6fa11f52d20bf0bb879e22ab7481b", "url": "https://github.com/squid-cache/squid/commit/703e07d25ca6fa11f52d20bf0bb879e22ab7481b" }, { "category": "external", "summary": "https://github.com/squid-cache/squid/security/advisories/GHSA-f9p7-3jqg-hhvq", "url": "https://github.com/squid-cache/squid/security/advisories/GHSA-f9p7-3jqg-hhvq" }, { "category": "external", "summary": "http://www.openwall.com/lists/oss-security/2026/03/25/3", "url": "http://www.openwall.com/lists/oss-security/2026/03/25/3" } ], "release_date": "2026-03-26T01:16:00Z", "remediations": [ { "category": "vendor_fix", "date": "2026-03-31T08:57:47.935635Z", "details": "Details on how to apply the fix are available at: https://cve.tuxcare.com/els/releases/CLSA-2026:1774947465", "product_ids": [ "Debian-10:squid-0:4.6-1+deb10u10+tuxcare.els4.amd64", "Debian-10:squid-cgi-0:4.6-1+deb10u10+tuxcare.els4.amd64", "Debian-10:squid-common-0:4.6-1+deb10u10+tuxcare.els4.all", "Debian-10:squid-purge-0:4.6-1+deb10u10+tuxcare.els4.amd64", "Debian-10:squid3-0:4.6-1+deb10u10+tuxcare.els4.all", "Debian-10:squidclient-0:4.6-1+deb10u10+tuxcare.els4.amd64" ], "url": "https://cve.tuxcare.com/els/releases/CLSA-2026:1774947465" } ], "scores": [ { "cvss_v3": { "attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 7.5, "baseSeverity": "HIGH", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "version": "3.1" }, "products": [ "Debian-10:squid-0:4.6-1+deb10u10+tuxcare.els4.amd64", "Debian-10:squid-cgi-0:4.6-1+deb10u10+tuxcare.els4.amd64", "Debian-10:squid-common-0:4.6-1+deb10u10+tuxcare.els4.all", "Debian-10:squid-purge-0:4.6-1+deb10u10+tuxcare.els4.amd64", "Debian-10:squid3-0:4.6-1+deb10u10+tuxcare.els4.all", "Debian-10:squidclient-0:4.6-1+deb10u10+tuxcare.els4.amd64" ] } ], "threats": [ { "category": "impact", "details": "Important" } ] }, { "cve": "CVE-2026-33515", "cwe": { "id": "CWE-125", "name": "Out-of-bounds Read" }, "notes": [ { "category": "description", "text": "Squid is a caching proxy for the Web. Prior to version 7.5, due to improper input validation, Squid is vulnerable to out of bounds read when handling ICP traffic. This problem allows a remote attacker to receive small amounts of memory potentially containing sensitive information when responding with errors to invalid ICP requests. This attack is limited to Squid deployments that explicitly enable ICP support (i.e. configure non-zero `icp_port`). This problem cannot be mitigated by denying ICP queries using `icp_access` rules. Version 7.5 contains a patch.", "title": "Vulnerability description" }, { "category": "general", "text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.", "title": "CVSS score applicability" } ], "product_status": { "fixed": [ "Debian-10:squid-0:4.6-1+deb10u10+tuxcare.els4.amd64", "Debian-10:squid-cgi-0:4.6-1+deb10u10+tuxcare.els4.amd64", "Debian-10:squid-common-0:4.6-1+deb10u10+tuxcare.els4.all", "Debian-10:squid-purge-0:4.6-1+deb10u10+tuxcare.els4.amd64", "Debian-10:squid3-0:4.6-1+deb10u10+tuxcare.els4.all", "Debian-10:squidclient-0:4.6-1+deb10u10+tuxcare.els4.amd64" ] }, "references": [ { "category": "self", "summary": "Canonical URL", "url": "https://cve.tuxcare.com/els/cve/CVE-2026-33515" }, { "category": "external", "summary": "https://github.com/squid-cache/squid/commit/8138e909d2058d4401e0ad49b583afaec912b165", "url": "https://github.com/squid-cache/squid/commit/8138e909d2058d4401e0ad49b583afaec912b165" }, { "category": "external", "summary": "https://github.com/squid-cache/squid/pull/2220", "url": "https://github.com/squid-cache/squid/pull/2220" }, { "category": "external", "summary": "https://github.com/squid-cache/squid/pull/2220#discussion_r2727683637", "url": "https://github.com/squid-cache/squid/pull/2220#discussion_r2727683637" }, { "category": "external", "summary": "https://github.com/squid-cache/squid/security/advisories/GHSA-84p4-hcx7-jj7c", "url": "https://github.com/squid-cache/squid/security/advisories/GHSA-84p4-hcx7-jj7c" }, { "category": "external", "summary": "http://www.openwall.com/lists/oss-security/2026/03/25/4", "url": "http://www.openwall.com/lists/oss-security/2026/03/25/4" } ], "release_date": "2026-03-26T01:16:00Z", "remediations": [ { "category": "vendor_fix", "date": "2026-03-31T08:57:47.935635Z", "details": "Details on how to apply the fix are available at: https://cve.tuxcare.com/els/releases/CLSA-2026:1774947465", "product_ids": [ "Debian-10:squid-0:4.6-1+deb10u10+tuxcare.els4.amd64", "Debian-10:squid-cgi-0:4.6-1+deb10u10+tuxcare.els4.amd64", "Debian-10:squid-common-0:4.6-1+deb10u10+tuxcare.els4.all", "Debian-10:squid-purge-0:4.6-1+deb10u10+tuxcare.els4.amd64", "Debian-10:squid3-0:4.6-1+deb10u10+tuxcare.els4.all", "Debian-10:squidclient-0:4.6-1+deb10u10+tuxcare.els4.amd64" ], "url": "https://cve.tuxcare.com/els/releases/CLSA-2026:1774947465" } ], "scores": [ { "cvss_v3": { "attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 6.5, "baseSeverity": "MEDIUM", "confidentialityImpact": "LOW", "integrityImpact": "LOW", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N", "version": "3.1" }, "products": [ "Debian-10:squid-0:4.6-1+deb10u10+tuxcare.els4.amd64", "Debian-10:squid-cgi-0:4.6-1+deb10u10+tuxcare.els4.amd64", "Debian-10:squid-common-0:4.6-1+deb10u10+tuxcare.els4.all", "Debian-10:squid-purge-0:4.6-1+deb10u10+tuxcare.els4.amd64", "Debian-10:squid3-0:4.6-1+deb10u10+tuxcare.els4.all", "Debian-10:squidclient-0:4.6-1+deb10u10+tuxcare.els4.amd64" ] } ], "threats": [ { "category": "impact", "details": "Moderate" } ] } ] }