CVE-2021-21401

{"id": "CVE-2021-21401", "metrics": {"cvssMetricV2": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"version": "2.0", "baseScore": 5.5, "accessVector": "NETWORK", "vectorString": "AV:N/AC:L/Au:S/C:N/I:P/A:P", "authentication": "SINGLE", "integrityImpact": "PARTIAL", "accessComplexity": "LOW", "availabilityImpact": "PARTIAL", "confidentialityImpact": "NONE"}, "acInsufInfo": false, "impactScore": 4.9, "baseSeverity": "MEDIUM", "obtainAllPrivilege": false, "exploitabilityScore": 8.0, "obtainUserPrivilege": false, "obtainOtherPrivilege": false, "userInteractionRequired": false}], "cvssMetricV31": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 7.1, "attackVector": "NETWORK", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:L", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "LOW", "privilegesRequired": "LOW", "confidentialityImpact": "NONE"}, "impactScore": 4.2, "exploitabilityScore": 2.8}, {"type": "Secondary", "source": "security-advisories@github.com", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 7.1, "attackVector": "NETWORK", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:L", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "LOW", "privilegesRequired": "LOW", "confidentialityImpact": "NONE"}, "impactScore": 4.2, "exploitabilityScore": 2.8}]}, "published": "2021-03-23T18:15:13.160", "references": [{"url": "https://github.com/nanopb/nanopb/blob/c9124132a604047d0ef97a09c0e99cd9bed2c818/CHANGELOG.txt#L1", "tags": ["Release Notes", "Third Party Advisory"], "source": "security-advisories@github.com"}, {"url": "https://github.com/nanopb/nanopb/commit/e2f0ccf939d9f82931d085acb6df8e9a182a4261", "tags": ["Patch", "Third Party Advisory"], "source": "security-advisories@github.com"}, {"url": "https://github.com/nanopb/nanopb/issues/647", "tags": ["Exploit", "Issue Tracking", "Third Party Advisory"], "source": "security-advisories@github.com"}, {"url": "https://github.com/nanopb/nanopb/security/advisories/GHSA-7mv5-5mxh-qg88", "tags": ["Exploit", "Patch", "Third Party Advisory"], "source": "security-advisories@github.com"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Primary", "source": "security-advisories@github.com", "description": [{"lang": "en", "value": "CWE-763"}]}], "descriptions": [{"lang": "en", "value": "Nanopb is a small code-size Protocol Buffers implementation in ansi C. In Nanopb before versions 0.3.9.8 and 0.4.5, decoding a specifically formed message can cause invalid `free()` or `realloc()` calls if the message type contains an `oneof` field, and the `oneof` directly contains both a pointer field and a non-pointer field. If the message data first contains the non-pointer field and then the pointer field, the data of the non-pointer field is incorrectly treated as if it was a pointer value. Such message data rarely occurs in normal messages, but it is a concern when untrusted data is parsed. This has been fixed in versions 0.3.9.8 and 0.4.5. See referenced GitHub Security Advisory for more information including workarounds."}, {"lang": "es", "value": "Nanopb es una implementaci\u00f3n de Protocol Buffers de tama\u00f1o de c\u00f3digo peque\u00f1o en ansi C. En Nanopb versiones anteriores a 0.3.9.8 y 0.4.5, la decodificaci\u00f3n de un mensaje formado espec\u00edficamente puede causar llamadas \"free()\" o \"realloc()\" no v\u00e1lidas si el tipo de mensaje contiene un campo \"oneof\", y el \"oneof\" contiene directamente un campo pointer como un campo non-pointer. Si los datos del mensaje contienen primero el campo non-pointer y luego el campo pointer, los datos del campo non-pointer son tratados incorrectamente como si fuera un valor pointer. Estos datos de mensajes raramente ocurren en mensajes normales, pero es una preocupaci\u00f3n cuando son analizados datos que no son confiables. Esto ha sido corregido en versiones 0.3.9.8 y 0.4.5. Consulte el Aviso de Seguridad de GitHub al que se hace referencia para obtener m\u00e1s informaci\u00f3n, incluyendo las soluciones"}], "lastModified": "2021-03-29T14:50:22.217", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:nanopb_project:nanopb:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "A39AC3AB-38B5-453C-B7A8-AC4B55CA26B3", "versionEndExcluding": "0.3.9.8"}, {"criteria": "cpe:2.3:a:nanopb_project:nanopb:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "751F562A-CABC-4E22-A0A3-12BF6171B6AE", "versionEndExcluding": "0.4.5", "versionStartIncluding": "0.4.0"}], "operator": "OR"}]}], "sourceIdentifier": "security-advisories@github.com"}