CVE-2021-21401

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See referenced GitHub Security Advisory for more information including workarounds."}], "metrics": [{"cvssV3_1": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "LOW", "baseScore": 7.1, "baseSeverity": "HIGH", "confidentialityImpact": "NONE", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:L", "version": "3.1"}}], "problemTypes": [{"descriptions": [{"cweId": "CWE-763", "description": "CWE-763: Release of Invalid Pointer or Reference", "lang": "en", "type": "CWE"}]}], "providerMetadata": {"dateUpdated": "2021-03-23T17:45:19.000Z", "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "shortName": "GitHub_M"}, "references": [{"tags": ["x_refsource_CONFIRM"], "url": "https://github.com/nanopb/nanopb/security/advisories/GHSA-7mv5-5mxh-qg88"}, {"tags": ["x_refsource_MISC"], "url": "https://github.com/nanopb/nanopb/issues/647"}, {"tags": ["x_refsource_MISC"], "url": "https://github.com/nanopb/nanopb/commit/e2f0ccf939d9f82931d085acb6df8e9a182a4261"}, {"tags": ["x_refsource_MISC"], "url": "https://github.com/nanopb/nanopb/blob/c9124132a604047d0ef97a09c0e99cd9bed2c818/CHANGELOG.txt#L1"}], "source": {"advisory": "GHSA-7mv5-5mxh-qg88", "discovery": "UNKNOWN"}, "title": "Invalid free() call in Nanopb", "x_legacyV4Record": {"CVE_data_meta": {"ASSIGNER": "security-advisories@github.com", "ID": "CVE-2021-21401", "STATE": "PUBLIC", "TITLE": "Invalid free() call in Nanopb"}, "affects": {"vendor": {"vendor_data": [{"product": {"product_data": [{"product_name": "nanopb", "version": {"version_data": [{"version_value": ">= 0.3.2, <= 0.3.9.7"}, {"version_value": ">= 0.4.0, <= 0.4.4"}]}}]}, "vendor_name": "nanopb"}]}}, "data_format": "MITRE", "data_type": "CVE", "data_version": "4.0", "description": {"description_data": [{"lang": "eng", "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."}]}, "impact": {"cvss": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "LOW", "baseScore": 7.1, "baseSeverity": "HIGH", "confidentialityImpact": "NONE", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:L", "version": "3.1"}}, "problemtype": {"problemtype_data": [{"description": [{"lang": "eng", "value": "CWE-763: Release of Invalid Pointer or Reference"}]}]}, "references": {"reference_data": [{"name": "https://github.com/nanopb/nanopb/security/advisories/GHSA-7mv5-5mxh-qg88", "refsource": "CONFIRM", "url": "https://github.com/nanopb/nanopb/security/advisories/GHSA-7mv5-5mxh-qg88"}, {"name": "https://github.com/nanopb/nanopb/issues/647", "refsource": "MISC", "url": "https://github.com/nanopb/nanopb/issues/647"}, {"name": "https://github.com/nanopb/nanopb/commit/e2f0ccf939d9f82931d085acb6df8e9a182a4261", "refsource": "MISC", "url": "https://github.com/nanopb/nanopb/commit/e2f0ccf939d9f82931d085acb6df8e9a182a4261"}, {"name": "https://github.com/nanopb/nanopb/blob/c9124132a604047d0ef97a09c0e99cd9bed2c818/CHANGELOG.txt#L1", "refsource": "MISC", "url": "https://github.com/nanopb/nanopb/blob/c9124132a604047d0ef97a09c0e99cd9bed2c818/CHANGELOG.txt#L1"}]}, "source": {"advisory": "GHSA-7mv5-5mxh-qg88", "discovery": "UNKNOWN"}}}, "adp": [{"providerMetadata": {"orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2024-08-03T18:09:16.087Z"}, "title": "CVE Program Container", "references": [{"tags": ["x_refsource_CONFIRM", "x_transferred"], "url": "https://github.com/nanopb/nanopb/security/advisories/GHSA-7mv5-5mxh-qg88"}, {"tags": ["x_refsource_MISC", "x_transferred"], "url": "https://github.com/nanopb/nanopb/issues/647"}, {"tags": ["x_refsource_MISC", "x_transferred"], "url": "https://github.com/nanopb/nanopb/commit/e2f0ccf939d9f82931d085acb6df8e9a182a4261"}, {"tags": ["x_refsource_MISC", "x_transferred"], "url": "https://github.com/nanopb/nanopb/blob/c9124132a604047d0ef97a09c0e99cd9bed2c818/CHANGELOG.txt#L1"}]}]}, "cveMetadata": {"assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "assignerShortName": "GitHub_M", "cveId": "CVE-2021-21401", "datePublished": "2021-03-23T17:45:19.000Z", "dateReserved": "2020-12-22T00:00:00.000Z", "dateUpdated": "2024-08-03T18:09:16.087Z", "state": "PUBLISHED"}, "dataType": "CVE_RECORD", "dataVersion": "5.1"}

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{"affected": [{"affectedData": [{"product": "nanopb", "vendor": "nanopb", "versions": [{"status": "affected", "version": ">= 0.3.2, <= 0.3.9.7"}, {"status": "affected", "version": ">= 0.4.0, <= 0.4.4"}]}], "source": "security-advisories@github.com"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:nanopb_project:nanopb:*:*:*:*:*:*:*:*", "matchCriteriaId": "A39AC3AB-38B5-453C-B7A8-AC4B55CA26B3", "versionEndExcluding": "0.3.9.8", "vulnerable": true}, {"criteria": "cpe:2.3:a:nanopb_project:nanopb:*:*:*:*:*:*:*:*", "matchCriteriaId": "751F562A-CABC-4E22-A0A3-12BF6171B6AE", "versionEndExcluding": "0.4.5", "versionStartIncluding": "0.4.0", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "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.&#xa0;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.&#xa0;Estos datos de mensajes raramente ocurren en mensajes normales, pero es una preocupaci\u00f3n cuando son analizados datos que no son confiables.&#xa0;Esto ha sido corregido en versiones 0.3.9.8 y 0.4.5.&#xa0;Consulte el Aviso de Seguridad de GitHub al que se hace referencia para obtener m\u00e1s informaci\u00f3n, incluyendo las soluciones"}], "id": "CVE-2021-21401", "lastModified": "2026-06-17T03:35:29.647", "metrics": {"cvssMetricV2": [{"acInsufInfo": false, "baseSeverity": "MEDIUM", "cvssData": {"accessComplexity": "LOW", "accessVector": "NETWORK", "authentication": "SINGLE", "availabilityImpact": "PARTIAL", "baseScore": 5.5, "confidentialityImpact": "NONE", "integrityImpact": "PARTIAL", "vectorString": "AV:N/AC:L/Au:S/C:N/I:P/A:P", "version": "2.0"}, "exploitabilityScore": 8.0, "impactScore": 4.9, "obtainAllPrivilege": false, "obtainOtherPrivilege": false, "obtainUserPrivilege": false, "source": "nvd@nist.gov", "type": "Primary", "userInteractionRequired": false}], "cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "LOW", "baseScore": 7.1, "baseSeverity": "HIGH", "confidentialityImpact": "NONE", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:L", "version": "3.1"}, "exploitabilityScore": 2.8, "impactScore": 4.2, "source": "security-advisories@github.com", "type": "Secondary"}, {"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "LOW", "baseScore": 7.1, "baseSeverity": "HIGH", "confidentialityImpact": "NONE", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:L", "version": "3.1"}, "exploitabilityScore": 2.8, "impactScore": 4.2, "source": "nvd@nist.gov", "type": "Primary"}]}, "published": "2021-03-23T18:15:13.160", "references": [{"source": "security-advisories@github.com", "tags": ["Release Notes", "Third Party Advisory"], "url": "https://github.com/nanopb/nanopb/blob/c9124132a604047d0ef97a09c0e99cd9bed2c818/CHANGELOG.txt#L1"}, {"source": "security-advisories@github.com", "tags": ["Patch", "Third Party Advisory"], "url": "https://github.com/nanopb/nanopb/commit/e2f0ccf939d9f82931d085acb6df8e9a182a4261"}, {"source": "security-advisories@github.com", "tags": ["Exploit", "Issue Tracking", "Third Party Advisory"], "url": "https://github.com/nanopb/nanopb/issues/647"}, {"source": "security-advisories@github.com", "tags": ["Exploit", "Patch", "Third Party Advisory"], "url": "https://github.com/nanopb/nanopb/security/advisories/GHSA-7mv5-5mxh-qg88"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Release Notes", "Third Party Advisory"], "url": "https://github.com/nanopb/nanopb/blob/c9124132a604047d0ef97a09c0e99cd9bed2c818/CHANGELOG.txt#L1"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch", "Third Party Advisory"], "url": "https://github.com/nanopb/nanopb/commit/e2f0ccf939d9f82931d085acb6df8e9a182a4261"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Exploit", "Issue Tracking", "Third Party Advisory"], "url": "https://github.com/nanopb/nanopb/issues/647"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Exploit", "Patch", "Third Party Advisory"], "url": "https://github.com/nanopb/nanopb/security/advisories/GHSA-7mv5-5mxh-qg88"}], "sourceIdentifier": "security-advisories@github.com", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-763"}], "source": "security-advisories@github.com", "type": "Secondary"}]}

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