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{"configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:trailofbits:uthenticode:*:*:*:*:*:*:*:*", "matchCriteriaId": "D8A7DBBA-4C4B-4DAB-9888-32C7F185665D", "versionEndExcluding": "1.0.9", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "uthenticode is a small cross-platform library for partially verifying Authenticode digital signatures. Version 1.0.9 of uthenticode hashed the entire file rather than hashing sections by virtual address, in violation of the Authenticode specification. As a result, an attacker could modify code within a binary without changing its Authenticode hash, making it appear valid from uthenticode's perspective. Versions of uthenticode prior to 1.0.9 are not vulnerable to this attack, nor are versions in the 2.x series. By design, uthenticode does not perform full-chain validation. However, the malleability of signature verification introduced in 1.0.9 was an unintended oversight. The 2.x series addresses the vulnerability. Versions prior to 1.0.9 are also not vulnerable, but users are encouraged to upgrade rather than downgrade. There are no workarounds to this vulnerability."}, {"lang": "es", "value": "uthenticode es una peque\u00f1a biblioteca multiplataforma para verificar parcialmente firmas digitales Authenticode. La versi\u00f3n 1.0.9 de uthenticode realiza el hash de todo el archivo en lugar de realizar el hash de secciones por direcci\u00f3n virtual, lo que viola la especificaci\u00f3n Authenticode. Como resultado, un atacante podr\u00eda modificar el c\u00f3digo dentro de un binario sin cambiar su hash Authenticode, haci\u00e9ndolo parecer v\u00e1lido desde la perspectiva de uthenticode. Las versiones de uthenticode anteriores a la 1.0.9 no son vulnerables a este ataque, como tampoco lo son las versiones de la serie 2.x. Por dise\u00f1o, uthenticode no realiza una validaci\u00f3n de cadena completa. Sin embargo, la maleabilidad de la verificaci\u00f3n de firmas introducida en 1.0.9 fue un descuido involuntario. La serie 2.x soluciona la vulnerabilidad. Las versiones anteriores a la 1.0.9 tampoco son vulnerables, pero se recomienda a los usuarios que actualicen en lugar de degradar. No existen soluciones a esta vulnerabilidad."}], "id": "CVE-2023-39969", "lastModified": "2023-08-16T17:12:53.300", "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"}, {"cvssData": {"attackComplexity": "HIGH", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 9.0, "baseSeverity": "CRITICAL", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "CHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 2.2, "impactScore": 6.0, "source": "security-advisories@github.com", "type": "Secondary"}]}, "published": "2023-08-09T16:15:09.733", "references": [{"source": "security-advisories@github.com", "tags": ["Patch"], "url": "https://github.com/trailofbits/uthenticode/commit/8670b7bb9154d79c276483dcb7c9e9fd5e66455b"}, {"source": "security-advisories@github.com", "tags": ["Patch"], "url": "https://github.com/trailofbits/uthenticode/pull/84"}, {"source": "security-advisories@github.com", "tags": ["Vendor Advisory"], "url": "https://github.com/trailofbits/uthenticode/security/advisories/GHSA-rc7g-99x7-4p9g"}], "sourceIdentifier": "security-advisories@github.com", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-347"}], "source": "security-advisories@github.com", "type": "Primary"}]}

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