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This problem allows a trusted client to perform Denial of Service when generating error pages for Client Manager reports. Squid older than 5.0.5 have not been tested and should be assumed to be vulnerable. All Squid-5.x up to and including 5.9 are vulnerable. All Squid-6.x up to and including 6.5 are vulnerable. This bug is fixed by Squid version 6.6. In addition, patches addressing this problem for the stable releases can be found in Squid's patch archives. As a workaround, prevent access to Cache Manager using Squid's main access control: `http_access deny manager`."}, {"lang": "es", "value": "Squid es un proxy de almacenamiento en cach\u00e9 para la Web. Debido a un error de referencia de puntero caducado, Squid anterior a la versi\u00f3n 6.6 es vulnerable a un ataque de denegaci\u00f3n de servicio contra las respuestas de error del Administrador de Cach\u00e9. Este problema permite que un cliente confiable realice una Denegaci\u00f3n de Servicio al generar p\u00e1ginas de error para los informes de Client Manager. Los calamares mayores de 5.0.5 no han sido probados y se debe suponer que son vulnerables. Todos los Squid-5.x hasta 5.9 includa, son vulnerables. Todos los Squid-6.x hasta 6.5 includa, son vulnerables. Este error se solucion\u00f3 con la versi\u00f3n 6.6 de Squid. Adem\u00e1s, los parches que solucionan este problema para las versiones estables se pueden encontrar en los archivos de parches de Squid. Como workaround, evite el acceso al Administrador de cach\u00e9 utilizando el control de acceso principal de Squid: `http_access deny manager`."}], "id": "CVE-2024-23638", "lastModified": "2026-06-17T07:13:16.913", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 6.5, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "version": "3.1"}, "exploitabilityScore": 2.8, "impactScore": 3.6, "source": "security-advisories@github.com", "type": "Secondary"}, {"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 6.5, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "version": "3.1"}, "exploitabilityScore": 2.8, "impactScore": 3.6, "source": "nvd@nist.gov", "type": "Primary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2024-23638", "options": [{"exploitation": "poc"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2024-01-24T16:36:13.499042Z", "version": "2.0.3"}}]}, "published": "2024-01-24T00:15:08.573", "references": [{"source": "security-advisories@github.com", "tags": ["Mailing List", "Patch"], "url": "http://www.squid-cache.org/Versions/v5/SQUID-2023_11.patch"}, {"source": "security-advisories@github.com", "tags": ["Mailing List", "Patch"], "url": "http://www.squid-cache.org/Versions/v6/SQUID-2023_11.patch"}, {"source": "security-advisories@github.com", "tags": ["Patch"], "url": "https://github.com/squid-cache/squid/commit/290ae202883ac28a48867079c2fb34c40efd382b"}, {"source": "security-advisories@github.com", "tags": ["Patch"], "url": "https://github.com/squid-cache/squid/commit/e8118a7381213f5cfcdeb4cec1d2d854bfd261c8"}, {"source": "security-advisories@github.com", "tags": ["Vendor Advisory"], "url": "https://github.com/squid-cache/squid/security/advisories/GHSA-j49p-553x-48rx"}, {"source": "security-advisories@github.com", "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/7R4KPSO3MQT3KAOZV7LC2GG3CYMCGK7H/"}, {"source": "security-advisories@github.com", "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/XWQHRDRHDM5PQTU6BHH4C5KGL37X6TVI/"}, {"source": "security-advisories@github.com", "tags": ["Exploit"], "url": "https://megamansec.github.io/Squid-Security-Audit/stream-assert.html"}, {"source": "security-advisories@github.com", "url": "https://security.netapp.com/advisory/ntap-20240208-0010/"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Mailing List", "Patch"], "url": "http://www.squid-cache.org/Versions/v5/SQUID-2023_11.patch"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Mailing List", "Patch"], "url": "http://www.squid-cache.org/Versions/v6/SQUID-2023_11.patch"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch"], "url": "https://github.com/squid-cache/squid/commit/290ae202883ac28a48867079c2fb34c40efd382b"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch"], "url": "https://github.com/squid-cache/squid/commit/e8118a7381213f5cfcdeb4cec1d2d854bfd261c8"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Vendor Advisory"], "url": "https://github.com/squid-cache/squid/security/advisories/GHSA-j49p-553x-48rx"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/7R4KPSO3MQT3KAOZV7LC2GG3CYMCGK7H/"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/XWQHRDRHDM5PQTU6BHH4C5KGL37X6TVI/"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Exploit"], "url": "https://megamansec.github.io/Squid-Security-Audit/stream-assert.html"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "https://security.netapp.com/advisory/ntap-20240208-0010/"}], "sourceIdentifier": "security-advisories@github.com", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-825"}], "source": "security-advisories@github.com", "type": "Secondary"}, {"description": [{"lang": "en", "value": "CWE-672"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{"affected_release": [{"advisory": "RHSA-2024:9644", "cpe": "cpe:/a:redhat:enterprise_linux:8", "package": "squid:4-8100020241113143337.489197e6", "product_name": "Red Hat Enterprise Linux 8", "release_date": "2024-11-14T00:00:00Z"}, {"advisory": "RHSA-2024:4861", "cpe": "cpe:/a:redhat:enterprise_linux:9", "package": "squid-7:5.5-13.el9_4", "product_name": "Red Hat Enterprise Linux 9", "release_date": "2024-07-25T00:00:00Z"}], "bugzilla": {"description": "squid: vulnerable to a Denial of Service attack against Cache Manager error responses", "id": "2260051", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2260051"}, "csaw": false, "cvss3": {"cvss3_base_score": "6.5", "cvss3_scoring_vector": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "status": "verified"}, "cwe": "CWE-825", "details": ["Squid is a caching proxy for the Web. Due to an expired pointer reference bug, Squid prior to version 6.6 is vulnerable to a Denial of Service attack against Cache Manager error responses. This problem allows a trusted client to perform Denial of Service when generating error pages for Client Manager reports. Squid older than 5.0.5 have not been tested and should be assumed to be vulnerable. All Squid-5.x up to and including 5.9 are vulnerable. All Squid-6.x up to and including 6.5 are vulnerable. This bug is fixed by Squid version 6.6. In addition, patches addressing this problem for the stable releases can be found in Squid's patch archives. As a workaround, prevent access to Cache Manager using Squid's main access control: `http_access deny manager`.", "A flaw was found in Squid, resulting in a potential denial of service attack targeting Cache Manager error responses. This issue enables a trusted client to execute a denial of service by manipulating the generation of error pages for Client Manager reports."], "mitigation": {"lang": "en:us", "value": "Restrict entry to Cache Manager through Squid's primary access control:\nhttp_access deny manager"}, "name": "CVE-2024-23638", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Out of support scope", "package_name": "squid", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Out of support scope", "package_name": "squid34", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Out of support scope", "package_name": "squid", "product_name": "Red Hat Enterprise Linux 7"}], "public_date": "2024-01-24T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2024-23638\nhttps://nvd.nist.gov/vuln/detail/CVE-2024-23638\nhttp://www.squid-cache.org/Versions/v5/SQUID-2023_11.patch\nhttp://www.squid-cache.org/Versions/v6/SQUID-2023_11.patch\nhttps://github.com/squid-cache/squid/commit/290ae202883ac28a48867079c2fb34c40efd382b\nhttps://github.com/squid-cache/squid/commit/e8118a7381213f5cfcdeb4cec1d2d854bfd261c8\nhttps://github.com/squid-cache/squid/security/advisories/GHSA-j49p-553x-48rx\nhttps://megamansec.github.io/Squid-Security-Audit/stream-assert.html"], "statement": "The identified vulnerability in Squid, leading to a Denial of Service attack against Cache Manager error responses, is considered a moderate issue. While it requires a trusted client for exploitation, the potential impact lies in the ability to disrupt normal functioning by manipulating error pages during the generation of Client Manager reports.", "threat_severity": "Moderate"}

{}