{ "id": "CVE-2021-29482", "sourceIdentifier": "security-advisories@github.com", "published": "2021-04-28T19:15:08.587", "lastModified": "2021-05-14T19:56:32.117", "vulnStatus": "Analyzed", "descriptions": [ { "lang": "en", "value": "xz is a compression and decompression library focusing on the xz format completely written in Go. The function readUvarint used to read the xz container format may not terminate a loop provide malicous input. The problem has been fixed in release v0.5.8. As a workaround users can limit the size of the compressed file input to a reasonable size for their use case. The standard library had recently the same issue and got the CVE-2020-16845 allocated." }, { "lang": "es", "value": "xz es una biblioteca de compresi\u00f3n y descompresi\u00f3n que se centra en el formato xz escrito completamente en Go. La funci\u00f3n readUvarint utilizada para leer el formato contenedor xz no puede terminar un bucle y proporcionar una entrada maliciosa. El problema ha sido corregido en la versi\u00f3n v0.5.8. Como soluci\u00f3n alternativa, los usuarios pueden limitar el tama\u00f1o de la entrada del archivo comprimido a un tama\u00f1o razonable para su caso de uso. La biblioteca est\u00e1ndar tuvo recientemente el mismo problema y se le asign\u00f3 el CVE-2020-16845" } ], "metrics": { "cvssMetricV31": [ { "source": "nvd@nist.gov", "type": "Primary", "cvssData": { "version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "NONE", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "availabilityImpact": "HIGH", "baseScore": 7.5, "baseSeverity": "HIGH" }, "exploitabilityScore": 3.9, "impactScore": 3.6 }, { "source": "security-advisories@github.com", "type": "Secondary", "cvssData": { "version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "NONE", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "availabilityImpact": "HIGH", "baseScore": 7.5, "baseSeverity": "HIGH" }, "exploitabilityScore": 3.9, "impactScore": 3.6 } ], "cvssMetricV2": [ { "source": "nvd@nist.gov", "type": "Primary", "cvssData": { "version": "2.0", "vectorString": "AV:N/AC:L/Au:N/C:N/I:N/A:P", "accessVector": "NETWORK", "accessComplexity": "LOW", "authentication": "NONE", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "availabilityImpact": "PARTIAL", "baseScore": 5.0 }, "baseSeverity": "MEDIUM", "exploitabilityScore": 10.0, "impactScore": 2.9, "acInsufInfo": false, "obtainAllPrivilege": false, "obtainUserPrivilege": false, "obtainOtherPrivilege": false, "userInteractionRequired": false } ] }, "weaknesses": [ { "source": "security-advisories@github.com", "type": "Primary", "description": [ { "lang": "en", "value": "CWE-835" } ] } ], "configurations": [ { "nodes": [ { "operator": "OR", "negate": false, "cpeMatch": [ { "vulnerable": true, "criteria": "cpe:2.3:a:xz_project:xz:*:*:*:*:*:go:*:*", "versionEndExcluding": "0.5.8", "matchCriteriaId": "7BD33BAB-9C3D-43FF-B75B-D71DFB85DB88" } ] } ] } ], "references": [ { "url": "https://github.com/ulikunitz/xz/commit/69c6093c7b2397b923acf82cb378f55ab2652b9b", "source": "security-advisories@github.com", "tags": [ "Patch", "Third Party Advisory" ] }, { "url": "https://github.com/ulikunitz/xz/security/advisories/GHSA-25xm-hr59-7c27", "source": "security-advisories@github.com", "tags": [ "Third Party Advisory" ] } ] }