CVE-2026-25506

{"id": "CVE-2026-25506", "cveTags": [], "metrics": {"cvssMetricV31": [{"type": "Secondary", "source": "security-advisories@github.com", "cvssData": {"scope": "CHANGED", "version": "3.1", "baseScore": 7.7, "attackVector": "LOCAL", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:L", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "HIGH", "availabilityImpact": "LOW", "privilegesRequired": "LOW", "confidentialityImpact": "HIGH"}, "impactScore": 6.0, "exploitabilityScore": 1.1}, {"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 7.8, "attackVector": "LOCAL", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "LOW", "confidentialityImpact": "HIGH"}, "impactScore": 5.9, "exploitabilityScore": 1.8}]}, "published": "2026-02-10T19:16:03.720", "references": [{"url": "https://github.com/dun/munge/commit/bf40cc27c4ce8451d4b062c9de0b67ec40894812", "tags": ["Patch"], "source": "security-advisories@github.com"}, {"url": "https://github.com/dun/munge/releases/tag/munge-0.5.18", "tags": ["Product", "Release Notes"], "source": "security-advisories@github.com"}, {"url": "https://github.com/dun/munge/security/advisories/GHSA-r9cr-jf4v-75gh", "tags": ["Mitigation", "Patch", "Vendor Advisory"], "source": "security-advisories@github.com"}, {"url": "http://www.openwall.com/lists/oss-security/2026/02/10/3", "tags": ["Mailing List", "Patch", "Third Party Advisory"], "source": "af854a3a-2127-422b-91ae-364da2661108"}, {"url": "http://www.openwall.com/lists/oss-security/2026/02/17/6", "tags": ["Mailing List", "Third Party Advisory"], "source": "af854a3a-2127-422b-91ae-364da2661108"}, {"url": "https://lists.debian.org/debian-lts-announce/2026/02/msg00015.html", "tags": ["Mailing List", "Third Party Advisory"], "source": "af854a3a-2127-422b-91ae-364da2661108"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Secondary", "source": "security-advisories@github.com", "description": [{"lang": "en", "value": "CWE-787"}]}], "descriptions": [{"lang": "en", "value": "MUNGE is an authentication service for creating and validating user credentials. From 0.5 to 0.5.17, local attacker can exploit a buffer overflow vulnerability in munged (the MUNGE authentication daemon) to leak cryptographic key material from process memory. With the leaked key material, the attacker could forge arbitrary MUNGE credentials to impersonate any user (including root) to services that rely on MUNGE for authentication. The vulnerability allows a buffer overflow by sending a crafted message with an oversized address length field, corrupting munged's internal state and enabling extraction of the MAC subkey used for credential verification. This vulnerability is fixed in 0.5.18."}, {"lang": "es", "value": "MUNGE es un servicio de autenticaci\u00f3n para crear y validar credenciales de usuario. Desde 0.5 hasta 0.5.17, un atacante local puede explotar una vulnerabilidad de desbordamiento de b\u00fafer en munged (el demonio de autenticaci\u00f3n de MUNGE) para filtrar material de clave criptogr\u00e1fica de la memoria del proceso. Con el material de clave filtrado, el atacante podr\u00eda falsificar credenciales MUNGE arbitrarias para suplantar a cualquier usuario (incluido root) a servicios que dependen de MUNGE para la autenticaci\u00f3n. La vulnerabilidad permite un desbordamiento de b\u00fafer al enviar un mensaje manipulado con un campo de longitud de direcci\u00f3n sobredimensionado, corrompiendo el estado interno de munged y permitiendo la extracci\u00f3n de la subclave MAC utilizada para la verificaci\u00f3n de credenciales. Esta vulnerabilidad se corrige en 0.5.18."}], "lastModified": "2026-02-25T17:39:03.170", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:opensuse:munge:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "8FA863EF-F766-4A77-8313-1AFC05928932", "versionEndExcluding": "0.5.18", "versionStartIncluding": "0.5"}], "operator": "OR"}]}, {"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:debian:debian_linux:11.0:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "FA6FEEC2-9F11-4643-8827-749718254FED"}], "operator": "OR"}]}], "sourceIdentifier": "security-advisories@github.com"}