{"dataType": "CVE_RECORD", "dataVersion": "5.1", "cveMetadata": {"cveId": "CVE-2024-43405", "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "state": "PUBLISHED", "assignerShortName": "GitHub_M", "dateReserved": "2024-08-12T18:02:04.966Z", "datePublished": "2024-09-04T15:36:23.277Z", "dateUpdated": "2024-09-04T16:21:54.357Z"}, "containers": {"cna": {"title": "Nuclei Template Signature Verification Bypass", "problemTypes": [{"descriptions": [{"cweId": "CWE-78", "lang": "en", "description": "CWE-78: Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')", "type": "CWE"}]}], "metrics": [{"cvssV3_1": {"attackComplexity": "HIGH", "attackVector": "LOCAL", "availabilityImpact": "NONE", "baseScore": 7.4, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "CHANGED", "userInteraction": "REQUIRED", "vectorString": "CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:N", "version": "3.1"}}], "references": [{"name": "https://github.com/projectdiscovery/nuclei/security/advisories/GHSA-7h5p-mmpp-hgmm", "tags": ["x_refsource_CONFIRM"], "url": "https://github.com/projectdiscovery/nuclei/security/advisories/GHSA-7h5p-mmpp-hgmm"}, {"name": "https://github.com/projectdiscovery/nuclei/commit/0da993afe6d41b4b1b814e8fad23a2acba13c60a", "tags": ["x_refsource_MISC"], "url": "https://github.com/projectdiscovery/nuclei/commit/0da993afe6d41b4b1b814e8fad23a2acba13c60a"}], "affected": [{"vendor": "projectdiscovery", "product": "nuclei", "versions": [{"version": ">= 3.0.0, < 3.3.2", "status": "affected"}]}], "providerMetadata": {"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "shortName": "GitHub_M", "dateUpdated": "2024-09-04T15:36:23.277Z"}, "descriptions": [{"lang": "en", "value": "Nuclei is a vulnerability scanner powered by YAML based templates. Starting in version 3.0.0 and prior to version 3.3.2, a vulnerability in Nuclei's template signature verification system could allow an attacker to bypass the signature check and possibly execute malicious code via custom code template. The vulnerability is present in the template signature verification process, specifically in the `signer` package. The vulnerability stems from a discrepancy between how the signature verification process and the YAML parser handle newline characters, combined with the way multiple signatures are processed. This allows an attacker to inject malicious content into a template while maintaining a valid signature for the benign part of the template. CLI users are affected if they execute custom code templates from unverified sources. This includes templates authored by third parties or obtained from unverified repositories. SDK Users are affected if they are developers integrating Nuclei into their platforms, particularly if they permit the execution of custom code templates by end-users. The vulnerability is addressed in Nuclei v3.3.2. Users are strongly recommended to update to this version to mitigate the security risk. As an interim measure, users should refrain from using custom templates if unable to upgrade immediately. Only trusted, verified templates should be executed. Those who are unable to upgrade Nuclei should disable running custom code templates as a workaround."}], "source": {"advisory": "GHSA-7h5p-mmpp-hgmm", "discovery": "UNKNOWN"}}, "adp": [{"affected": [{"vendor": "projectdiscovery", "product": "nuclei", "cpes": ["cpe:2.3:a:projectdiscovery:nuclei:*:*:*:*:*:*:*:*"], "defaultStatus": "unknown", "versions": [{"version": "3.0.0", "status": "affected", "lessThan": "3.3.2", "versionType": "custom"}]}], "metrics": [{"other": {"type": "ssvc", "content": {"timestamp": "2024-09-04T16:21:03.366044Z", "id": "CVE-2024-43405", "options": [{"Exploitation": "poc"}, {"Automatable": "no"}, {"Technical Impact": "total"}], "role": "CISA Coordinator", "version": "2.0.3"}}}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2024-09-04T16:21:54.357Z"}}]}}

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{"configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:projectdiscovery:nuclei:*:*:*:*:*:go:*:*", "matchCriteriaId": "82094046-7D35-4A48-8D10-AA7C249AE8B2", "versionEndExcluding": "3.3.2", "versionStartIncluding": "3.0.0", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "Nuclei is a vulnerability scanner powered by YAML based templates. Starting in version 3.0.0 and prior to version 3.3.2, a vulnerability in Nuclei's template signature verification system could allow an attacker to bypass the signature check and possibly execute malicious code via custom code template. The vulnerability is present in the template signature verification process, specifically in the `signer` package. The vulnerability stems from a discrepancy between how the signature verification process and the YAML parser handle newline characters, combined with the way multiple signatures are processed. This allows an attacker to inject malicious content into a template while maintaining a valid signature for the benign part of the template. CLI users are affected if they execute custom code templates from unverified sources. This includes templates authored by third parties or obtained from unverified repositories. SDK Users are affected if they are developers integrating Nuclei into their platforms, particularly if they permit the execution of custom code templates by end-users. The vulnerability is addressed in Nuclei v3.3.2. Users are strongly recommended to update to this version to mitigate the security risk. As an interim measure, users should refrain from using custom templates if unable to upgrade immediately. Only trusted, verified templates should be executed. Those who are unable to upgrade Nuclei should disable running custom code templates as a workaround."}, {"lang": "es", "value": "Nuclei es un esc\u00e1ner de vulnerabilidades que funciona con plantillas basadas en YAML. A partir de la versi\u00f3n 3.0.0 y antes de la versi\u00f3n 3.3.2, una vulnerabilidad en el sistema de verificaci\u00f3n de firmas de plantillas de Nuclei podr\u00eda permitir a un atacante eludir la verificaci\u00f3n de firmas y posiblemente ejecutar c\u00f3digo malicioso a trav\u00e9s de una plantilla de c\u00f3digo personalizada. La vulnerabilidad est\u00e1 presente en el proceso de verificaci\u00f3n de firmas de plantillas, espec\u00edficamente en el paquete `signer`. La vulnerabilidad se origina en una discrepancia entre c\u00f3mo el proceso de verificaci\u00f3n de firmas y el analizador YAML manejan los caracteres de nueva l\u00ednea, combinado con la forma en que se procesan m\u00faltiples firmas. Esto permite a un atacante inyectar contenido malicioso en una plantilla mientras mantiene una firma v\u00e1lida para la parte benigna de la plantilla. Los usuarios de CLI se ven afectados si ejecutan plantillas de c\u00f3digo personalizadas de fuentes no verificadas. Esto incluye plantillas creadas por terceros u obtenidas de repositorios no verificados. Los usuarios de SDK se ven afectados si son desarrolladores que integran Nuclei en sus plataformas, en particular si permiten la ejecuci\u00f3n de plantillas de c\u00f3digo personalizadas por parte de los usuarios finales. La vulnerabilidad se soluciona en Nuclei v3.3.2. Se recomienda encarecidamente a los usuarios que actualicen a esta versi\u00f3n para mitigar el riesgo de seguridad. Como medida provisoria, los usuarios deben abstenerse de utilizar plantillas personalizadas si no pueden actualizar de inmediato. Solo se deben ejecutar plantillas verificadas y confiables. Aquellos que no puedan actualizar Nuclei deben deshabilitar la ejecuci\u00f3n de plantillas de c\u00f3digo personalizadas como workaround."}], "id": "CVE-2024-43405", "lastModified": "2024-10-01T15:37:37.337", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 7.8, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "REQUIRED", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 1.8, "impactScore": 5.9, "source": "[email protected]", "type": "Primary"}, {"cvssData": {"attackComplexity": "HIGH", "attackVector": "LOCAL", "availabilityImpact": "NONE", "baseScore": 7.4, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "CHANGED", "userInteraction": "REQUIRED", "vectorString": "CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:N", "version": "3.1"}, "exploitabilityScore": 1.0, "impactScore": 5.8, "source": "[email protected]", "type": "Secondary"}]}, "published": "2024-09-04T16:15:06.853", "references": [{"source": "[email protected]", "tags": ["Patch"], "url": "https://github.com/projectdiscovery/nuclei/commit/0da993afe6d41b4b1b814e8fad23a2acba13c60a"}, {"source": "[email protected]", "tags": ["Mitigation", "Third Party Advisory"], "url": "https://github.com/projectdiscovery/nuclei/security/advisories/GHSA-7h5p-mmpp-hgmm"}], "sourceIdentifier": "[email protected]", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-78"}], "source": "[email protected]", "type": "Primary"}, {"description": [{"lang": "en", "value": "CWE-78"}], "source": "[email protected]", "type": "Secondary"}]}

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