CVE-2025-25291

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An authentication bypass vulnerability was found in ruby-saml prior to versions 1.12.4 and 1.18.0 due to a parser differential. ReXML and Nokogiri parse XML differently; the parsers can generate entirely different document structures from the same XML input. That allows an attacker to be able to execute a Signature Wrapping attack. This issue may lead to authentication bypass. Versions 1.12.4 and 1.18.0 fix the issue."}, {"lang": "es", "value": "ruby-saml proporciona inicio de sesi\u00f3n \u00fanico (SSO) con lenguaje de marcado para aserciones de seguridad (SAML) para Ruby. Se detect\u00f3 una vulnerabilidad de omisi\u00f3n de autenticaci\u00f3n en ruby-saml anterior a las versiones 1.12.4 y 1.18.0 debido a una diferencia en el analizador. ReXML y Nokogiri analizan XML de forma diferente; los analizadores pueden generar estructuras de documento completamente distintas a partir de la misma entrada XML. Esto permite a un atacante ejecutar un ataque de envoltura de firma. Este problema puede provocar la omisi\u00f3n de autenticaci\u00f3n. Las versiones 1.12.4 y 1.18.0 solucionan el problema."}], "id": "CVE-2025-25291", "lastModified": "2026-06-17T09:00:37.610", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 9.8, "baseSeverity": "CRITICAL", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 3.9, "impactScore": 5.9, "source": "nvd@nist.gov", "type": "Primary"}], "cvssMetricV40": [{"cvssData": {"Automatable": "NOT_DEFINED", "Recovery": "NOT_DEFINED", "Safety": "NOT_DEFINED", "attackComplexity": "LOW", "attackRequirements": "NONE", "attackVector": "NETWORK", "availabilityRequirement": "NOT_DEFINED", "baseScore": 9.3, "baseSeverity": "CRITICAL", "confidentialityRequirement": "NOT_DEFINED", "exploitMaturity": "NOT_DEFINED", "integrityRequirement": "NOT_DEFINED", "modifiedAttackComplexity": "NOT_DEFINED", "modifiedAttackRequirements": "NOT_DEFINED", "modifiedAttackVector": "NOT_DEFINED", "modifiedPrivilegesRequired": "NOT_DEFINED", "modifiedSubAvailabilityImpact": "NOT_DEFINED", "modifiedSubConfidentialityImpact": "NOT_DEFINED", "modifiedSubIntegrityImpact": "NOT_DEFINED", "modifiedUserInteraction": "NOT_DEFINED", "modifiedVulnAvailabilityImpact": "NOT_DEFINED", "modifiedVulnConfidentialityImpact": "NOT_DEFINED", "modifiedVulnIntegrityImpact": "NOT_DEFINED", "privilegesRequired": "NONE", "providerUrgency": "NOT_DEFINED", "subAvailabilityImpact": "NONE", "subConfidentialityImpact": "NONE", "subIntegrityImpact": "NONE", "userInteraction": "NONE", "valueDensity": "NOT_DEFINED", "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X", "version": "4.0", "vulnAvailabilityImpact": "NONE", "vulnConfidentialityImpact": "HIGH", "vulnIntegrityImpact": "HIGH", "vulnerabilityResponseEffort": "NOT_DEFINED"}, "source": "security-advisories@github.com", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2025-25291", "options": [{"exploitation": "poc"}, {"automatable": "yes"}, {"technicalImpact": "total"}], "role": "CISA Coordinator", "timestamp": "2025-04-03T20:06:31.066662Z", "version": "2.0.3"}}]}, "published": "2025-03-12T21:15:42.000", "references": [{"source": "security-advisories@github.com", "tags": ["Patch"], "url": "https://about.gitlab.com/releases/2025/03/12/patch-release-gitlab-17-9-2-released"}, {"source": "security-advisories@github.com", "tags": ["Exploit", "Third Party Advisory"], "url": "https://github.blog/security/sign-in-as-anyone-bypassing-saml-sso-authentication-with-parser-differentials"}, {"source": "security-advisories@github.com", "tags": ["Patch"], "url": "https://github.com/SAML-Toolkits/ruby-saml/commit/e76c5b36bac40aedbf1ba7ffaaf495be63328cd9"}, {"source": "security-advisories@github.com", "tags": ["Patch"], "url": "https://github.com/SAML-Toolkits/ruby-saml/commit/e9c1cdbd0f9afa467b585de279db0cbd0fb8ae97"}, {"source": "security-advisories@github.com", "tags": ["Release Notes"], "url": "https://github.com/SAML-Toolkits/ruby-saml/releases/tag/v1.12.4"}, {"source": "security-advisories@github.com", "tags": ["Release Notes"], "url": "https://github.com/SAML-Toolkits/ruby-saml/releases/tag/v1.18.0"}, {"source": "security-advisories@github.com", "tags": ["Vendor Advisory"], "url": "https://github.com/SAML-Toolkits/ruby-saml/security/advisories/GHSA-4vc4-m8qh-g8jm"}, {"source": "security-advisories@github.com", "tags": ["Vendor Advisory"], "url": "https://github.com/omniauth/omniauth-saml/security/advisories/GHSA-hw46-3hmr-x9xv"}, {"source": "security-advisories@github.com", "tags": ["Exploit", "Third Party Advisory"], "url": "https://portswigger.net/research/saml-roulette-the-hacker-always-wins"}, {"source": "security-advisories@github.com", "tags": ["Third Party Advisory"], "url": "https://securitylab.github.com/advisories/GHSL-2024-329_GHSL-2024-330_ruby-saml"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "https://lists.debian.org/debian-lts-announce/2025/04/msg00011.html"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Issue Tracking"], "url": "https://news.ycombinator.com/item?id=43374519"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Third Party Advisory"], "url": "https://security.netapp.com/advisory/ntap-20250314-0010/"}], "sourceIdentifier": "security-advisories@github.com", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-347"}, {"lang": "en", "value": "CWE-436"}], "source": "security-advisories@github.com", "type": "Secondary"}]}

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