{ "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": "rebase to 3.5.20-17.amzn2.7.28; CVE-2026-61642 fixed by vendor\n- carry CVE-2026-47729: out-of-bounds read in the FTP gateway directory\n listing parser that could disclose memory from unrelated transactions", "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-2026:1791218879", "url": "https://cve.tuxcare.com/els/releases/CLSA-2026:1791218879" }, { "category": "self", "summary": "Canonical URL", "url": "https://security.tuxcare.com/csaf/v2/els_os/amazonlinux2els/advisories/2026/clsa-2026_1791218879.json" } ], "tracking": { "current_release_date": "2026-10-15T15:10:23Z", "generator": { "date": "2026-10-15T15:10:23Z", "engine": { "name": "pyCSAF" } }, "id": "CLSA-2026:1791218879", "initial_release_date": "2026-10-05T16:48:01Z", "revision_history": [ { "date": "2026-10-05T16:48:01Z", "number": "1", "summary": "Initial version" }, { "date": "2026-10-15T15:10:23Z", "number": "2", "summary": "Official Publication" } ], "status": "final", "version": "2" }, "title": "squid: Fix of CVE-2026-61642" }, "product_tree": { "branches": [ { "branches": [ { "branches": [ { "category": "product_name", "name": "Amazon Linux 2", "product": { "name": "Amazon Linux 2", "product_id": "Amazon-Linux-2", "product_identification_helper": { "cpe": "cpe:2.3:o:amazon:amazon_linux:2:*:*:*:*:*:*:*" } } } ], "category": "product_family", "name": "Amazon Linux" } ], "category": "vendor", "name": "Amazon Web Services, Inc." }, { "branches": [ { "branches": [ { "category": "product_version", "name": "squid-7:3.5.20-17.amzn2.7.28.tuxcare.els1.x86_64", "product": { "name": 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"squid-sysvinit-7:3.5.20-17.amzn2.7.26.tuxcare.els1.x86_64 as a component of Amazon Linux 2", "product_id": "Amazon-Linux-2:squid-sysvinit-7:3.5.20-17.amzn2.7.26.tuxcare.els1.x86_64" }, "product_reference": "squid-sysvinit-7:3.5.20-17.amzn2.7.26.tuxcare.els1.x86_64", "relates_to_product_reference": "Amazon-Linux-2" }, { "category": "default_component_of", "full_product_name": { "name": "squid-7:3.5.20-17.amzn2.7.26.tuxcare.els1.x86_64 as a component of Amazon Linux 2", "product_id": "Amazon-Linux-2:squid-7:3.5.20-17.amzn2.7.26.tuxcare.els1.x86_64" }, "product_reference": "squid-7:3.5.20-17.amzn2.7.26.tuxcare.els1.x86_64", "relates_to_product_reference": "Amazon-Linux-2" }, { "category": "default_component_of", "full_product_name": { "name": "squid-migration-script-7:3.5.20-17.amzn2.7.26.tuxcare.els1.x86_64 as a component of Amazon Linux 2", "product_id": "Amazon-Linux-2:squid-migration-script-7:3.5.20-17.amzn2.7.26.tuxcare.els1.x86_64" }, "product_reference": "squid-migration-script-7:3.5.20-17.amzn2.7.26.tuxcare.els1.x86_64", "relates_to_product_reference": "Amazon-Linux-2" } ] }, "vulnerabilities": [ { "cve": "CVE-2026-61642", "cwe": { "id": "CWE-444", "name": "Inconsistent Interpretation of HTTP Requests ('HTTP Request/Response Smuggling')" }, "notes": [ { "category": "description", "text": "Squid is a caching proxy for the Web. From 3.3.0.1 to before 7.6, due to an improper enforcement of behavioral workflow bug, Squid is vulnerable to a Request Smuggling attack against HTTP/1.1 Transfer-Encoding. HTTP header parsing (`src/HttpHeader.cc`) accepted the bare` Transfer-Encoding:` identity form, which the HTTP specification prohibits because any transfer coding must be wrapped within chunked encoding. This problem allows a trusted client to perform an HTTP Request Smuggling attack when HTTP/1.1 is used, bypassing security mechanisms that may be in place between attacker and Squid. When there is an HTTP cache operating prior to the affected Squid, this Request Smuggling attack also allows the attacker to poison that web cache and store arbitrary malicious content at any URL for delivery to other clients' future requests. This issue is fixed in version 7.6.", "title": "Vulnerability description" } ], "product_status": { "fixed": [ "Amazon-Linux-2:squid-7:3.5.20-17.amzn2.7.28.tuxcare.els1.aarch64", "Amazon-Linux-2:squid-7:3.5.20-17.amzn2.7.28.tuxcare.els1.i686", "Amazon-Linux-2:squid-7:3.5.20-17.amzn2.7.28.tuxcare.els1.x86_64", "Amazon-Linux-2:squid-migration-script-7:3.5.20-17.amzn2.7.28.tuxcare.els1.aarch64", "Amazon-Linux-2:squid-migration-script-7:3.5.20-17.amzn2.7.28.tuxcare.els1.i686", "Amazon-Linux-2:squid-migration-script-7:3.5.20-17.amzn2.7.28.tuxcare.els1.x86_64", "Amazon-Linux-2:squid-sysvinit-7:3.5.20-17.amzn2.7.28.tuxcare.els1.aarch64", "Amazon-Linux-2:squid-sysvinit-7:3.5.20-17.amzn2.7.28.tuxcare.els1.i686", "Amazon-Linux-2:squid-sysvinit-7:3.5.20-17.amzn2.7.28.tuxcare.els1.x86_64" ], "known_affected": [ "Amazon-Linux-2:squid-7:3.5.20-17.amzn2.7.26.tuxcare.els1.x86_64", "Amazon-Linux-2:squid-7:3.5.20-17.amzn2.7.27.tuxcare.els2.x86_64", "Amazon-Linux-2:squid-migration-script-7:3.5.20-17.amzn2.7.26.tuxcare.els1.x86_64", "Amazon-Linux-2:squid-migration-script-7:3.5.20-17.amzn2.7.27.tuxcare.els2.x86_64", "Amazon-Linux-2:squid-sysvinit-7:3.5.20-17.amzn2.7.26.tuxcare.els1.x86_64", "Amazon-Linux-2:squid-sysvinit-7:3.5.20-17.amzn2.7.27.tuxcare.els2.x86_64" ] }, "references": [ { "category": "self", "summary": "Canonical URL", "url": "https://cve.tuxcare.com/els/cve/CVE-2026-61642" }, { "category": "external", "summary": "https://github.com/squid-cache/squid/commit/d06f48de8b8cc9a378cb91ecfe8e89b6e81696d2", "url": "https://github.com/squid-cache/squid/commit/d06f48de8b8cc9a378cb91ecfe8e89b6e81696d2" }, { "category": "external", "summary": "https://github.com/squid-cache/squid/commit/d808a7c825a70275113790471135c9c4d547ee51", "url": "https://github.com/squid-cache/squid/commit/d808a7c825a70275113790471135c9c4d547ee51" }, { "category": "external", "summary": "https://github.com/squid-cache/squid/pull/2427", "url": "https://github.com/squid-cache/squid/pull/2427" }, { "category": "external", "summary": "https://github.com/squid-cache/squid/pull/2431", "url": "https://github.com/squid-cache/squid/pull/2431" }, { "category": "external", "summary": "https://github.com/squid-cache/squid/releases/tag/SQUID_7_6", "url": "https://github.com/squid-cache/squid/releases/tag/SQUID_7_6" }, { "category": "external", "summary": "https://github.com/squid-cache/squid/security/advisories/GHSA-537g-4gfh-w7m6", "url": "https://github.com/squid-cache/squid/security/advisories/GHSA-537g-4gfh-w7m6" } ], "release_date": "2026-10-13T17:17:00Z", "remediations": [ { "category": "vendor_fix", "date": "2026-10-05T16:48:01.017127Z", "details": "Details on how to apply the fix are available at: https://cve.tuxcare.com/els/releases/CLSA-2026:1791218879", "product_ids": [ "Amazon-Linux-2:squid-7:3.5.20-17.amzn2.7.28.tuxcare.els1.aarch64", "Amazon-Linux-2:squid-7:3.5.20-17.amzn2.7.28.tuxcare.els1.i686", "Amazon-Linux-2:squid-7:3.5.20-17.amzn2.7.28.tuxcare.els1.x86_64", "Amazon-Linux-2:squid-migration-script-7:3.5.20-17.amzn2.7.28.tuxcare.els1.aarch64", "Amazon-Linux-2:squid-migration-script-7:3.5.20-17.amzn2.7.28.tuxcare.els1.i686", "Amazon-Linux-2:squid-migration-script-7:3.5.20-17.amzn2.7.28.tuxcare.els1.x86_64", "Amazon-Linux-2:squid-sysvinit-7:3.5.20-17.amzn2.7.28.tuxcare.els1.aarch64", "Amazon-Linux-2:squid-sysvinit-7:3.5.20-17.amzn2.7.28.tuxcare.els1.i686", "Amazon-Linux-2:squid-sysvinit-7:3.5.20-17.amzn2.7.28.tuxcare.els1.x86_64" ], "url": "https://cve.tuxcare.com/els/releases/CLSA-2026:1791218879" }, { "category": "none_available", "date": "2026-10-13T17:17:00Z", "details": "Affected", "product_ids": [ "Amazon-Linux-2:squid-7:3.5.20-17.amzn2.7.26.tuxcare.els1.x86_64", "Amazon-Linux-2:squid-7:3.5.20-17.amzn2.7.27.tuxcare.els2.x86_64", "Amazon-Linux-2:squid-migration-script-7:3.5.20-17.amzn2.7.26.tuxcare.els1.x86_64", "Amazon-Linux-2:squid-migration-script-7:3.5.20-17.amzn2.7.27.tuxcare.els2.x86_64", "Amazon-Linux-2:squid-sysvinit-7:3.5.20-17.amzn2.7.26.tuxcare.els1.x86_64", "Amazon-Linux-2:squid-sysvinit-7:3.5.20-17.amzn2.7.27.tuxcare.els2.x86_64" ] } ], "threats": [ { "category": "impact", "details": "Important" } ] } ] }