{"dataType": "CVE_RECORD", "dataVersion": "5.0", "cveMetadata": {"cveId": "CVE-2023-40012", "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "state": "PUBLISHED", "assignerShortName": "GitHub_M", "dateReserved": "2023-08-08T13:46:25.241Z", "datePublished": "2023-08-09T15:33:54.406Z", "dateUpdated": "2023-08-09T15:33:54.406Z"}, "containers": {"cna": {"title": "uthenticode EKU validation bypass", "problemTypes": [{"descriptions": [{"cweId": "CWE-325", "lang": "en", "description": "CWE-325: Missing Cryptographic Step", "type": "CWE"}]}, {"descriptions": [{"cweId": "CWE-347", "lang": "en", "description": "CWE-347: Improper Verification of Cryptographic Signature", "type": "CWE"}]}], "metrics": [{"cvssV3_1": {"attackComplexity": "HIGH", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 5.9, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N", "version": "3.1"}}], "references": [{"name": "https://github.com/trailofbits/uthenticode/security/advisories/GHSA-gm2f-j4rj-6xqj", "tags": ["x_refsource_CONFIRM"], "url": "https://github.com/trailofbits/uthenticode/security/advisories/GHSA-gm2f-j4rj-6xqj"}, {"name": "https://github.com/trailofbits/uthenticode/pull/78", "tags": ["x_refsource_MISC"], "url": "https://github.com/trailofbits/uthenticode/pull/78"}, {"name": "https://github.com/trailofbits/uthenticode/commit/caeb1eb62412605f71bd96ce9bb9420644b6db53", "tags": ["x_refsource_MISC"], "url": "https://github.com/trailofbits/uthenticode/commit/caeb1eb62412605f71bd96ce9bb9420644b6db53"}], "affected": [{"vendor": "trailofbits", "product": "uthenticode", "versions": [{"version": "< 2.0.0", "status": "affected"}]}], "providerMetadata": {"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "shortName": "GitHub_M", "dateUpdated": "2023-08-09T15:33:54.406Z"}, "descriptions": [{"lang": "en", "value": "uthenticode is a small cross-platform library for partially verifying Authenticode digital signatures. Versions of uthenticode prior to the 2.x series did not check Extended Key Usages in certificates, in violation of the Authenticode X.509 certificate profile. As a result, a malicious user could produce a \"signed\" PE file that uthenticode would verify and consider valid using an X.509 certificate that isn't entitled to produce code signatures (e.g., a SSL certificate). By design, uthenticode does not perform full-chain validation. However, the absence of EKU validation was an unintended oversight. The 2.0.0 release series includes EKU checks. There are no workarounds to this vulnerability."}], "source": {"advisory": "GHSA-gm2f-j4rj-6xqj", "discovery": "UNKNOWN"}}}}

{"configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:trailofbits:uthenticode:*:*:*:*:*:*:*:*", "matchCriteriaId": "8765EF72-84AD-4ED2-B5D9-56441DED4F20", "versionEndExcluding": "2.0.0", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "descriptions": [{"lang": "en", "value": "uthenticode is a small cross-platform library for partially verifying Authenticode digital signatures. Versions of uthenticode prior to the 2.x series did not check Extended Key Usages in certificates, in violation of the Authenticode X.509 certificate profile. As a result, a malicious user could produce a \"signed\" PE file that uthenticode would verify and consider valid using an X.509 certificate that isn't entitled to produce code signatures (e.g., a SSL certificate). By design, uthenticode does not perform full-chain validation. However, the absence of EKU validation was an unintended oversight. The 2.0.0 release series includes EKU checks. There are no workarounds to this vulnerability."}, {"lang": "es", "value": "uthenticode es una peque\u00f1a biblioteca multiplataforma para verificar parcialmente las firmas digitales Authenticode. Las versiones de uthenticode anteriores a la serie 2.x no comprobaban el uso de claves extendidas en los certificados, lo que infring\u00eda el perfil de certificado X.509 de Authenticode. Como resultado, un usuario malintencionado podr\u00eda producir un archivo PE \"firmado\" que uthenticode verificar\u00eda y considerar\u00eda v\u00e1lido utilizando un certificado X.509 que no est\u00e1 autorizado a producir firmas de c\u00f3digo (por ejemplo, un certificado SSL). Por dise\u00f1o, uthenticode no realiza una validaci\u00f3n de cadena completa. Sin embargo, la ausencia de validaci\u00f3n EKU fue un descuido involuntario. La versi\u00f3n 2.0.0 incluye comprobaciones EKU. No existen soluciones a esta vulnerabilidad."}], "id": "CVE-2023-40012", "lastModified": "2023-08-16T17:40:41.097", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 7.5, "baseSeverity": "HIGH", "confidentialityImpact": "NONE", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N", "version": "3.1"}, "exploitabilityScore": 3.9, "impactScore": 3.6, "source": "nvd@nist.gov", "type": "Primary"}, {"cvssData": {"attackComplexity": "HIGH", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 5.9, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N", "version": "3.1"}, "exploitabilityScore": 2.2, "impactScore": 3.6, "source": "security-advisories@github.com", "type": "Secondary"}]}, "published": "2023-08-09T16:15:10.060", "references": [{"source": "security-advisories@github.com", "tags": ["Patch"], "url": "https://github.com/trailofbits/uthenticode/commit/caeb1eb62412605f71bd96ce9bb9420644b6db53"}, {"source": "security-advisories@github.com", "tags": ["Patch"], "url": "https://github.com/trailofbits/uthenticode/pull/78"}, {"source": "security-advisories@github.com", "tags": ["Vendor Advisory"], "url": "https://github.com/trailofbits/uthenticode/security/advisories/GHSA-gm2f-j4rj-6xqj"}], "sourceIdentifier": "security-advisories@github.com", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-325"}, {"lang": "en", "value": "CWE-347"}], "source": "security-advisories@github.com", "type": "Primary"}]}

{}