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{"configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:libarchive:libarchive:3.4.1:*:*:*:*:*:*:*", "matchCriteriaId": "DC309F3F-564F-42EC-B892-B3005FEB13C9", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "Heap-based buffer overflow in archive_string_append_from_wcs() (archive_string.c) in libarchive-3.4.1dev allows remote attackers to cause a denial of service (out-of-bounds write in heap memory resulting into a crash) via a crafted archive file. NOTE: this only affects users who downloaded the development code from GitHub. Users of the product's official releases are unaffected."}, {"lang": "es", "value": "Un desbordamiento del b\u00fafer en la regi\u00f3n heap de la memoria en la funci\u00f3n archive_string_append_from_wcs() (en el archivo archive_string.c) en libarchive-3.4.1dev, permite a atacantes remotos causar una denegaci\u00f3n de servicio (una escritura fuera de l\u00edmites en la memoria de la pila resultando en un bloqueo) por medio de un archivo de almacenamiento dise\u00f1ado. NOTA: esto solo afecta a los usuarios que descargaron el c\u00f3digo de desarrollo de GitHub. Los usuarios de los lanzamientos oficiales del producto no est\u00e1n afectados"}], "id": "CVE-2020-21674", "lastModified": "2020-10-26T15:53:14.910", "metrics": {"cvssMetricV2": [{"acInsufInfo": false, "baseSeverity": "MEDIUM", "cvssData": {"accessComplexity": "MEDIUM", "accessVector": "NETWORK", "authentication": "NONE", "availabilityImpact": "PARTIAL", "baseScore": 4.3, "confidentialityImpact": "NONE", "integrityImpact": "NONE", "vectorString": "AV:N/AC:M/Au:N/C:N/I:N/A:P", "version": "2.0"}, "exploitabilityScore": 8.6, "impactScore": 2.9, "obtainAllPrivilege": false, "obtainOtherPrivilege": false, "obtainUserPrivilege": false, "source": "nvd@nist.gov", "type": "Primary", "userInteractionRequired": true}], "cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 6.5, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "REQUIRED", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H", "version": "3.1"}, "exploitabilityScore": 2.8, "impactScore": 3.6, "source": "nvd@nist.gov", "type": "Primary"}]}, "published": "2020-10-15T15:15:11.280", "references": [{"source": "cve@mitre.org", "tags": ["Patch", "Third Party Advisory"], "url": "https://github.com/libarchive/libarchive/commit/4f085eea879e2be745f4d9bf57e8513ae48157f4"}, {"source": "cve@mitre.org", "tags": ["Third Party Advisory"], "url": "https://github.com/libarchive/libarchive/issues/1298"}], "sourceIdentifier": "cve@mitre.org", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-787"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{"bugzilla": {"description": "libarchive: heap-based buffer overflow in archive_string_append_from_wcs function in archive_string.c", "id": "1888786", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1888786"}, "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:N/A:H", "status": "draft"}, "cwe": "CWE-787->CWE-122", "details": ["Heap-based buffer overflow in archive_string_append_from_wcs() (archive_string.c) in libarchive-3.4.1dev allows remote attackers to cause a denial of service (out-of-bounds write in heap memory resulting into a crash) via a crafted archive file. NOTE: this only affects users who downloaded the development code from GitHub. Users of the product's official releases are unaffected."], "name": "CVE-2020-21674", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Out of support scope", "package_name": "libarchive", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Out of support scope", "package_name": "libarchive", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Will not fix", "impact": "low", "package_name": "libarchive", "product_name": "Red Hat Enterprise Linux 8"}], "public_date": "2019-12-28T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2020-21674\nhttps://nvd.nist.gov/vuln/detail/CVE-2020-21674"], "statement": "Red Hat Product Security has set the Severity of this flaw to Low for libarchive as shipped with Red Hat Enterprise Linux 8 because we could not reproduce the issue and it states \"NOTE: this only affects users who downloaded the development code from GitHub. Users of the product's official releases are unaffected.\"\nThis flaw is out of support scope for libarchive as shipped with Red Hat Enterprise Linux 6 and 7.", "threat_severity": "Moderate", "upstream_fix": "libarchive 3.4.1"}