{ "id": "CVE-2021-45339", "sourceIdentifier": "cve@mitre.org", "published": "2021-12-27T14:15:08.357", "lastModified": "2022-07-12T17:42:04.277", "vulnStatus": "Analyzed", "descriptions": [ { "lang": "en", "value": "Privilege escalation vulnerability in Avast Antivirus prior to 20.4 allows a local user to gain elevated privileges by \"hollowing\" trusted process which could lead to the bypassing of Avast self-defense." }, { "lang": "es", "value": "Una vulnerabilidad de escalada de privilegios en Avast Antivirus versiones anteriores a 20.4, permite a un usuario local alcanzar privilegios elevados al \"vaciar\" los procesos confiables, lo que podr\u00eda conllevar a una omisi\u00f3n de la autodefensa de Avast" } ], "metrics": { "cvssMetricV31": [ { "source": "nvd@nist.gov", "type": "Primary", "cvssData": { "version": "3.1", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "attackVector": "LOCAL", "attackComplexity": "LOW", "privilegesRequired": "LOW", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "availabilityImpact": "HIGH", "baseScore": 7.8, "baseSeverity": "HIGH" }, "exploitabilityScore": 1.8, "impactScore": 5.9 } ], "cvssMetricV2": [ { "source": "nvd@nist.gov", "type": "Primary", "cvssData": { "version": "2.0", "vectorString": "AV:L/AC:L/Au:N/C:C/I:C/A:C", "accessVector": "LOCAL", "accessComplexity": "LOW", "authentication": "NONE", "confidentialityImpact": "COMPLETE", "integrityImpact": "COMPLETE", "availabilityImpact": "COMPLETE", "baseScore": 7.2 }, "baseSeverity": "HIGH", "exploitabilityScore": 3.9, "impactScore": 10.0, "acInsufInfo": false, "obtainAllPrivilege": false, "obtainUserPrivilege": false, "obtainOtherPrivilege": false, "userInteractionRequired": false } ] }, "weaknesses": [ { "source": "nvd@nist.gov", "type": "Primary", "description": [ { "lang": "en", "value": "CWE-863" } ] } ], "configurations": [ { "nodes": [ { "operator": "OR", "negate": false, "cpeMatch": [ { "vulnerable": true, "criteria": "cpe:2.3:a:avast:antivirus:*:*:*:*:*:*:*:*", "versionEndExcluding": "20.4", "matchCriteriaId": "9530DCD6-2AE4-4E7E-A67A-5E5F87CE3DF3" } ] } ] } ], "references": [ { "url": "https://github.com/the-deniss/Vulnerability-Disclosures/tree/main/CVE-2021-AVST0", "source": "cve@mitre.org", "tags": [ "Exploit", "Third Party Advisory" ] }, { "url": "https://www.avast.com/hacker-hall-of-fame/en/researcher-david-eade-reports-antitrack-bug-to-avast-0", "source": "cve@mitre.org", "tags": [ "Vendor Advisory" ] } ] }