CVE-2023-37464

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The AES GCM decryption routine incorrectly uses the Tag length from the actual Authentication Tag provided in the JWE. The spec says that a fixed length of 16 octets must be applied. Therefore this bug allows an attacker to provide a truncated Authentication Tag and to modify the JWE accordingly. Users should upgrade to a version >= 0.6.2.2. 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The AES GCM decryption routine incorrectly uses the Tag length from the actual Authentication Tag provided in the JWE. The spec says that a fixed length of 16 octets must be applied. Therefore this bug allows an attacker to provide a truncated Authentication Tag and to modify the JWE accordingly. Users should upgrade to a version >= 0.6.2.2. Users unable to upgrade should avoid using AES GCM encryption and replace it with another encryption algorithm (e.g. AES CBC)."}], "problemTypes": [{"descriptions": [{"lang": "en", "type": "CWE", "cweId": "CWE-327", "description": "CWE-327: Use of a Broken or Risky Cryptographic Algorithm"}]}], "providerMetadata": {"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "shortName": "GitHub_M", "dateUpdated": "2023-07-14T20:25:18.264Z"}}}, "cveMetadata": {"cveId": "CVE-2023-37464", "state": "PUBLISHED", "dateUpdated": "2024-10-30T15:18:28.556Z", "dateReserved": "2023-07-06T13:01:36.997Z", "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "datePublished": "2023-07-14T20:25:18.264Z", "assignerShortName": "GitHub_M"}, "dataVersion": "5.1"}

{"affected": [{"affectedData": [{"product": "cjose", "vendor": "OpenIDC", "versions": [{"status": "affected", "version": "< 0.6.2.2"}]}], "source": "security-advisories@github.com"}, {"affectedData": [{"cpes": ["cpe:2.3:a:cisco:cjose:*:*:*:*:*:*:*:*"], "defaultStatus": "unknown", "product": "cjose", "vendor": "cisco", "versions": [{"lessThan": "0.6.2.2", "status": "affected", "version": "0", "versionType": "custom"}]}], "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:cisco:cjose:*:*:*:*:*:*:*:*", "matchCriteriaId": "03D82D74-C8C8-4602-933C-DD2940EF4E2C", "versionEndExcluding": "0.6.2.2", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "OpenIDC/cjose is a C library implementing the Javascript Object Signing and Encryption (JOSE). The AES GCM decryption routine incorrectly uses the Tag length from the actual Authentication Tag provided in the JWE. The spec says that a fixed length of 16 octets must be applied. Therefore this bug allows an attacker to provide a truncated Authentication Tag and to modify the JWE accordingly. Users should upgrade to a version >= 0.6.2.2. Users unable to upgrade should avoid using AES GCM encryption and replace it with another encryption algorithm (e.g. AES CBC)."}, {"lang": "es", "value": "OpenIDC/cjose es una biblioteca C que implementa Javascript Object Signing and Encryption (JOSE). La rutina de descifrado AES GCM utiliza incorrectamente la longitud de la etiqueta de la etiqueta de autenticaci\u00f3n real proporcionada en el JWE. La especificaci\u00f3n dice que se debe aplicar una longitud fija de 16 octetos. Por lo tanto, este error permite a un atacante proporcionar una etiqueta de autenticaci\u00f3n truncada y modificar el JWE en consecuencia. Los usuarios deben actualizar a una versi\u00f3n &gt;= 0.6.2.2. Los usuarios que no puedan actualizar deben evitar el uso del cifrado AES GCM y reemplazarlo con otro algoritmo de cifrado (por ejemplo, AES CBC)."}], "id": "CVE-2023-37464", "lastModified": "2026-06-17T06:08:16.283", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 8.6, "baseSeverity": "HIGH", "confidentialityImpact": "NONE", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "CHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:H/A:N", "version": "3.1"}, "exploitabilityScore": 3.9, "impactScore": 4.0, "source": "security-advisories@github.com", "type": "Secondary"}, {"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"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2023-37464", "options": [{"exploitation": "none"}, {"automatable": "yes"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2024-10-30T15:16:24.195381Z", "version": "2.0.3"}}]}, "published": "2023-07-14T21:15:08.903", "references": [{"source": "security-advisories@github.com", "tags": ["Third Party Advisory"], "url": "https://datatracker.ietf.org/doc/html/rfc7518#section-4.7"}, {"source": "security-advisories@github.com", "tags": ["Patch"], "url": "https://github.com/OpenIDC/cjose/commit/7325e9a5e71e2fc0e350487ecac7d84acdf0ed5e"}, {"source": "security-advisories@github.com", "tags": ["Release Notes"], "url": "https://github.com/OpenIDC/cjose/releases/tag/v0.6.2.2"}, {"source": "security-advisories@github.com", "tags": ["Exploit", "Patch", "Vendor Advisory"], "url": "https://github.com/OpenIDC/cjose/security/advisories/GHSA-3rhg-3gf2-6xgj"}, {"source": "security-advisories@github.com", "url": "https://lists.debian.org/debian-lts-announce/2023/08/msg00002.html"}, {"source": "security-advisories@github.com", "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/DFWAPMYYVBO2U65HPYDTBEKNSXG4TP5C/"}, {"source": "security-advisories@github.com", "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/LCQJXKDPCWCXB2V4JMQ3UWYJ4UIBPUW6/"}, {"source": "security-advisories@github.com", "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/PTZHOVGY7AHGNMEY245HK4Q36AMA53AL/"}, {"source": "security-advisories@github.com", "url": "https://www.debian.org/security/2023/dsa-5472"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Third Party Advisory"], "url": "https://datatracker.ietf.org/doc/html/rfc7518#section-4.7"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch"], "url": "https://github.com/OpenIDC/cjose/commit/7325e9a5e71e2fc0e350487ecac7d84acdf0ed5e"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Release Notes"], "url": "https://github.com/OpenIDC/cjose/releases/tag/v0.6.2.2"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Exploit", "Patch", "Vendor Advisory"], "url": "https://github.com/OpenIDC/cjose/security/advisories/GHSA-3rhg-3gf2-6xgj"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "https://lists.debian.org/debian-lts-announce/2023/08/msg00002.html"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/DFWAPMYYVBO2U65HPYDTBEKNSXG4TP5C/"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/LCQJXKDPCWCXB2V4JMQ3UWYJ4UIBPUW6/"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/PTZHOVGY7AHGNMEY245HK4Q36AMA53AL/"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "https://www.debian.org/security/2023/dsa-5472"}], "sourceIdentifier": "security-advisories@github.com", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-327"}], "source": "security-advisories@github.com", "type": "Secondary"}]}

{"affected_release": [{"advisory": "RHSA-2023:4418", "cpe": "cpe:/a:redhat:enterprise_linux:8", "package": "mod_auth_openidc:2.3-8080020230720161126.63b34585", "product_name": "Red Hat Enterprise Linux 8", "release_date": "2023-08-01T00:00:00Z"}, {"advisory": "RHSA-2023:4429", "cpe": "cpe:/a:redhat:rhel_e4s:8.1", "package": "mod_auth_openidc:2.3-8010020230726170509.c27ad7f8", "product_name": "Red Hat Enterprise Linux 8.1 Update Services for SAP Solutions", "release_date": "2023-08-02T00:00:00Z"}, {"advisory": "RHSA-2023:4410", "cpe": "cpe:/a:redhat:rhel_aus:8.2", "package": "mod_auth_openidc:2.3-8020020230720143951.4cda2c84", "product_name": "Red Hat Enterprise Linux 8.2 Advanced Update Support", "release_date": "2023-08-01T00:00:00Z"}, {"advisory": "RHSA-2023:4410", "cpe": "cpe:/a:redhat:rhel_tus:8.2", "package": "mod_auth_openidc:2.3-8020020230720143951.4cda2c84", "product_name": "Red Hat Enterprise Linux 8.2 Telecommunications Update Service", "release_date": "2023-08-01T00:00:00Z"}, {"advisory": "RHSA-2023:4410", "cpe": "cpe:/a:redhat:rhel_e4s:8.2", "package": "mod_auth_openidc:2.3-8020020230720143951.4cda2c84", "product_name": "Red Hat Enterprise Linux 8.2 Update Services for SAP Solutions", "release_date": "2023-08-01T00:00:00Z"}, {"advisory": "RHSA-2023:4409", "cpe": "cpe:/a:redhat:rhel_aus:8.4", "package": "mod_auth_openidc:2.3-8040020230720145640.522a0ee4", "product_name": "Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support", "release_date": "2023-08-01T00:00:00Z"}, {"advisory": "RHSA-2023:4409", "cpe": "cpe:/a:redhat:rhel_tus:8.4", "package": "mod_auth_openidc:2.3-8040020230720145640.522a0ee4", "product_name": "Red Hat Enterprise Linux 8.4 Telecommunications Update Service", "release_date": "2023-08-01T00:00:00Z"}, {"advisory": "RHSA-2023:4409", "cpe": "cpe:/a:redhat:rhel_e4s:8.4", "package": "mod_auth_openidc:2.3-8040020230720145640.522a0ee4", "product_name": "Red Hat Enterprise Linux 8.4 Update Services for SAP Solutions", "release_date": "2023-08-01T00:00:00Z"}, {"advisory": "RHSA-2023:4408", "cpe": "cpe:/a:redhat:rhel_eus:8.6", "package": "mod_auth_openidc:2.3-8060020230720154259.ad008a3a", "product_name": "Red Hat Enterprise Linux 8.6 Extended Update Support", "release_date": "2023-08-01T00:00:00Z"}, {"advisory": "RHSA-2023:4411", "cpe": "cpe:/a:redhat:enterprise_linux:9", "package": "cjose-0:0.6.1-13.el9_2", "product_name": "Red Hat Enterprise Linux 9", "release_date": "2023-08-01T00:00:00Z"}, {"advisory": "RHSA-2023:4417", "cpe": "cpe:/a:redhat:rhel_eus:9.0", "package": "cjose-0:0.6.1-13.el9_0", "product_name": "Red Hat Enterprise Linux 9.0 Extended Update Support", "release_date": "2023-08-01T00:00:00Z"}], "bugzilla": {"description": "cjose: AES GCM decryption uses the Tag length from the actual Authentication Tag provided in the JWE", "id": "2223295", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2223295"}, "csaw": false, "cvss3": {"cvss3_base_score": "7.5", "cvss3_scoring_vector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N", "status": "verified"}, "cwe": "CWE-327", "details": ["OpenIDC/cjose is a C library implementing the Javascript Object Signing and Encryption (JOSE). The AES GCM decryption routine incorrectly uses the Tag length from the actual Authentication Tag provided in the JWE. The spec says that a fixed length of 16 octets must be applied. Therefore this bug allows an attacker to provide a truncated Authentication Tag and to modify the JWE accordingly. Users should upgrade to a version >= 0.6.2.2. Users unable to upgrade should avoid using AES GCM encryption and replace it with another encryption algorithm (e.g. AES CBC).", "A vulnerability was found in cjose. The cjose is a C library implementing the Javascript Object Signing and Encryption (JOSE). The AES GCM decryption routine incorrectly uses the tag length from the actual Authentication Tag provided in the JSON Web Encryption (JWE). A fixed length of 16 octets must be applied. This flaw allows an attacker to provide a truncated Authentication Tag and modify the JWE."], "mitigation": {"lang": "en:us", "value": "Users unable to upgrade should avoid using AES GCM encryption and replace it with another encryption algorithm, such as AES CBC."}, "name": "CVE-2023-37464", "public_date": "2023-07-14T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2023-37464\nhttps://nvd.nist.gov/vuln/detail/CVE-2023-37464\nhttps://github.com/OpenIDC/cjose/security/advisories/GHSA-3rhg-3gf2-6xgj"], "threat_severity": "Important"}

{}