CVE-2023-20264

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{"affected": [{"affectedData": [{"product": "Cisco Adaptive Security Appliance (ASA) Software", "vendor": "Cisco", "versions": [{"status": "affected", "version": "9.18.1"}, {"status": "affected", "version": "9.18.1.3"}, {"status": "affected", "version": "9.18.2"}, {"status": "affected", "version": "9.18.2.5"}, {"status": "affected", "version": "9.18.2.7"}, {"status": "affected", "version": "9.18.2.8"}, {"status": "affected", "version": "9.18.3"}, {"status": "affected", "version": "9.18.3.39"}, {"status": "affected", "version": "9.18.3.46"}, {"status": "affected", "version": "9.19.1.5"}, {"status": "affected", "version": "9.19.1.9"}, {"status": "affected", "version": "9.19.1.12"}]}, {"product": "Cisco Firepower Threat Defense Software", "vendor": "Cisco", "versions": [{"status": "affected", "version": "7.2.4"}]}], "source": "psirt@cisco.com"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:cisco:adaptive_security_appliance_software:*:*:*:*:*:*:*:*", "matchCriteriaId": "F33C25A4-E475-4F23-978A-5BCE83C38AB2", "versionEndIncluding": "9.18.3.46", "versionStartIncluding": "9.18.1", "vulnerable": true}, {"criteria": "cpe:2.3:o:cisco:adaptive_security_appliance_software:*:*:*:*:*:*:*:*", "matchCriteriaId": "D246D5B2-7764-4631-88F0-1B8A60B77DF8", "versionEndIncluding": "9.19.1.12", "versionStartIncluding": "9.19.1.5", "vulnerable": true}], "negate": false, "operator": "OR"}]}, {"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:cisco:secure_firewall_threat_defense:7.2.4:*:*:*:*:*:*:*", "matchCriteriaId": "7432B6F9-03CD-4373-B281-2A09864E7828", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "A vulnerability in the implementation of Security Assertion Markup Language (SAML) 2.0 single sign-on (SSO) for remote access VPN in Cisco Adaptive Security Appliance (ASA) Software and Cisco Firepower Threat Defense (FTD) Software could allow an unauthenticated, remote attacker to intercept the SAML assertion of a user who is authenticating to a remote access VPN session. This vulnerability is due to insufficient validation of the login URL. An attacker could exploit this vulnerability by persuading a user to access a site that is under the control of the attacker, allowing the attacker to modify the login URL. A successful exploit could allow the attacker to intercept a successful SAML assertion and use that assertion to establish a remote access VPN session toward the affected device with the identity and permissions of the hijacked user, resulting in access to the protected network."}, {"lang": "es", "value": "Una vulnerabilidad en la implementaci\u00f3n de Security Assertion Markup Language (SAML) 2.0 de Single Sign-oOn (SSO) para VPN de acceso remoto en el software Cisco Adaptive Security Appliance (ASA) y el software Cisco Firepower Threat Defense (FTD) podr\u00eda permitir que un atacante remoto no autenticado intercepte la aserci\u00f3n SAML de un usuario que se est\u00e1 autenticando en una sesi\u00f3n VPN de acceso remoto. Esta vulnerabilidad se debe a una validaci\u00f3n insuficiente de la URL de inicio de sesi\u00f3n. Un atacante podr\u00eda aprovechar esta vulnerabilidad persuadiendo a un usuario para que acceda a un sitio que est\u00e1 bajo el control del atacante, permiti\u00e9ndole modificar la URL de inicio de sesi\u00f3n. Un exploit exitoso podr\u00eda permitir al atacante interceptar una aserci\u00f3n SAML exitosa y usar esa aserci\u00f3n para establecer una sesi\u00f3n VPN de acceso remoto hacia el dispositivo afectado con la identidad y los permisos del usuario secuestrado, lo que resultar\u00eda en acceso a la red protegida."}], "id": "CVE-2023-20264", "lastModified": "2026-08-11T19:33:44.513", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 6.1, "baseSeverity": "MEDIUM", "confidentialityImpact": "LOW", "integrityImpact": "LOW", "privilegesRequired": "NONE", "scope": "CHANGED", "userInteraction": "REQUIRED", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N", "version": "3.1"}, "exploitabilityScore": 2.8, "impactScore": 2.7, "source": "psirt@cisco.com", "type": "Secondary"}, {"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 6.1, "baseSeverity": "MEDIUM", "confidentialityImpact": "LOW", "integrityImpact": "LOW", "privilegesRequired": "NONE", "scope": "CHANGED", "userInteraction": "REQUIRED", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N", "version": "3.1"}, "exploitabilityScore": 2.8, "impactScore": 2.7, "source": "nvd@nist.gov", "type": "Primary"}]}, "published": "2023-11-01T18:15:09.757", "references": [{"source": "psirt@cisco.com", "tags": ["Vendor Advisory"], "url": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-asaftd-saml-hijack-ttuQfyz"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Vendor Advisory"], "url": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-asaftd-saml-hijack-ttuQfyz"}], "sourceIdentifier": "psirt@cisco.com", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-601"}], "source": "psirt@cisco.com", "type": "Secondary"}, {"description": [{"lang": "en", "value": "NVD-CWE-noinfo"}], "source": "nvd@nist.gov", "type": "Primary"}]}

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