CVE-2025-71422

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Because the Contrast Initializer assumes a device is protected if `cryptsetup open` succeeds with the secret seed, the guest will open the attacker-supplied volume and write secret data in plaintext, or under a volume key known to the attacker, allowing the host to read confidential data that should have been encrypted. Contrast v1.12.1 ships cryptsetup 2.8.1, which disables null ciphers in keyslots when the passphrase is non-empty; v1.13.0 adds detached-header validation in guest memory and integrity protection for secure persistent storage. Contrast persistent volumes were not integrity protected, so integrity impact is not considered."}, {"lang": "es", "value": "Contrast es un entorno de ejecuci\u00f3n de Kubernetes para contenedores confidenciales. Versiones anteriores a 1.12.1, la caracter\u00edstica de volumen persistente seguro es vulnerable a un host malicioso que suministra un volumen LUKS2 manipulado a una VM de pod. Los metadatos del volumen LUKS2 no est\u00e1n autenticados y, con versiones de cryptsetup anteriores a 2.8.1, se acepta sin error un encabezado que especifica el algoritmo de cifrado de ranura de clave nula (cipher_null-ecb). Debido a que el Inicializador de Contrast asume que un dispositivo est\u00e1 protegido si 'cryptsetup open' tiene \u00e9xito con la semilla secreta, el invitado abrir\u00e1 el volumen suministrado por el atacante y escribir\u00e1 datos secretos en texto plano, o bajo una clave de volumen conocida por el atacante, permitiendo al host leer datos confidenciales que deber\u00edan haber sido cifrados. Contrast v1.12.1 incluye cryptsetup 2.8.1, que deshabilita los cifrados nulos en las ranuras de clave cuando la frase de contrase\u00f1a no est\u00e1 vac\u00eda; v1.13.0 a\u00f1ade validaci\u00f3n de encabezado separado en la memoria del invitado y protecci\u00f3n de integridad para el almacenamiento persistente seguro. Los vol\u00famenes persistentes de Contrast no estaban protegidos por integridad, por lo que el impacto en la integridad no se considera."}], "id": "CVE-2025-71422", "lastModified": "2026-10-14T13:10:00.187", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "ADJACENT_NETWORK", "availabilityImpact": "NONE", "baseScore": 5.7, "baseSeverity": "MEDIUM", "confidentialityImpact": "HIGH", "integrityImpact": "NONE", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N", "version": "3.1"}, "exploitabilityScore": 2.1, "impactScore": 3.6, "source": "disclosure@vulncheck.com", "type": "Secondary"}], "cvssMetricV40": [{"cvssData": {"Automatable": "NOT_DEFINED", "Recovery": "NOT_DEFINED", "Safety": "NOT_DEFINED", "attackComplexity": "LOW", "attackRequirements": "NONE", "attackVector": "ADJACENT", "availabilityRequirement": "NOT_DEFINED", "baseScore": 6.9, "baseSeverity": "MEDIUM", "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": "LOW", "providerUrgency": "NOT_DEFINED", "subAvailabilityImpact": "NONE", "subConfidentialityImpact": "NONE", "subIntegrityImpact": "NONE", "userInteraction": "NONE", "valueDensity": "NOT_DEFINED", "vectorString": "CVSS:4.0/AV:A/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/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": "NONE", "vulnerabilityResponseEffort": "NOT_DEFINED"}, "source": "disclosure@vulncheck.com", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2025-71422", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2026-09-30T15:11:59.882703Z", "version": "2.0.3"}}]}, "published": "2026-09-27T02:17:11.040", "references": [{"source": "disclosure@vulncheck.com", "url": "https://github.com/edgelesssys/contrast/security/advisories/GHSA-f5p4-p5q5-jv3h"}, {"source": "disclosure@vulncheck.com", "url": "https://www.vulncheck.com/advisories/contrast-before-1.12.1-insecure-luks2-persistent-storage"}], "sourceIdentifier": "disclosure@vulncheck.com", "vulnStatus": "Deferred", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-347"}], "source": "disclosure@vulncheck.com", "type": "Secondary"}]}

{}

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