{"dataType": "CVE_RECORD", "dataVersion": "5.1", "cveMetadata": {"cveId": "CVE-2024-7227", "assignerOrgId": "99f1926a-a320-47d8-bbb5-42feb611262e", "state": "PUBLISHED", "assignerShortName": "zdi", "dateReserved": "2024-07-29T20:22:38.024Z", "datePublished": "2024-11-22T21:11:51.625Z", "dateUpdated": "2024-11-25T16:55:56.660Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "99f1926a-a320-47d8-bbb5-42feb611262e", "shortName": "zdi", "dateUpdated": "2024-11-22T21:11:51.625Z"}, "title": "Avast Free Antivirus AvastSvc Link Following Local Privilege Escalation Vulnerability", "descriptions": [{"lang": "en", "value": "Avast Free Antivirus AvastSvc Link Following Local Privilege Escalation Vulnerability. This vulnerability allows local attackers to escalate privileges on affected installations of Avast Free Antivirus. An attacker must first obtain the ability to execute low-privileged code on the target system in order to exploit this vulnerability.\n\nThe specific flaw exists within the Avast Service. By creating a symbolic link, an attacker can abuse the service to delete a file. An attacker can leverage this vulnerability to escalate privileges and execute arbitrary code in the context of SYSTEM. Was ZDI-CAN-22272."}], "affected": [{"vendor": "Avast", "product": "Free Antivirus", "versions": [{"version": "23.9.6082", "status": "affected"}], "defaultStatus": "unknown"}], "problemTypes": [{"descriptions": [{"lang": "en", "cweId": "CWE-59", "description": "CWE-59: Improper Link Resolution Before File Access ('Link Following')", "type": "CWE"}]}], "references": [{"url": "https://www.zerodayinitiative.com/advisories/ZDI-24-1003/", "name": "ZDI-24-1003", "tags": ["x_research-advisory"]}], "dateAssigned": "2024-07-29T15:22:38.069-05:00", "datePublic": "2024-07-29T16:36:47.293-05:00", "source": {"lang": "en", "value": "Nicholas Zubrisky and Michael DePlante (@izobashi) of Trend Micro's Zero Day Initiative"}, "metrics": [{"format": "CVSS", "cvssV3_0": {"version": "3.0", "vectorString": "CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "baseScore": 7.8, "baseSeverity": "HIGH"}}]}, "adp": [{"affected": [{"vendor": "avast", "product": "free_antivirus", "cpes": ["cpe:2.3:a:avast:free_antivirus:23.9.6082:*:*:*:*:*:*:*"], "defaultStatus": "unknown", "versions": [{"version": "23.9.6082", "status": "affected"}]}], "metrics": [{"other": {"type": "ssvc", "content": {"timestamp": "2024-11-25T16:10:17.673678Z", "id": "CVE-2024-7227", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "total"}], "role": "CISA Coordinator", "version": "2.0.3"}}}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2024-11-25T16:55:56.660Z"}}]}}

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{"configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:avast:free_antivirus:23.9.6082:*:*:*:*:*:*:*", "matchCriteriaId": "F4A8A336-4DA5-4E2F-B597-91F8FFE98877", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "Avast Free Antivirus AvastSvc Link Following Local Privilege Escalation Vulnerability. This vulnerability allows local attackers to escalate privileges on affected installations of Avast Free Antivirus. An attacker must first obtain the ability to execute low-privileged code on the target system in order to exploit this vulnerability.\n\nThe specific flaw exists within the Avast Service. By creating a symbolic link, an attacker can abuse the service to delete a file. An attacker can leverage this vulnerability to escalate privileges and execute arbitrary code in the context of SYSTEM. Was ZDI-CAN-22272."}, {"lang": "es", "value": "Vulnerabilidad de escalada de privilegios locales en Avast Free Antivirus AvastSvc Link Following. Esta vulnerabilidad permite a los atacantes locales escalar privilegios en las instalaciones afectadas de Avast Free Antivirus. Un atacante primero debe obtener la capacidad de ejecutar c\u00f3digo con pocos privilegios en el sistema de destino para explotar esta vulnerabilidad. La falla espec\u00edfica existe dentro del Servicio Avast. Al crear un enlace simb\u00f3lico, un atacante puede abusar del servicio para eliminar un archivo. Un atacante puede aprovechar esta vulnerabilidad para escalar privilegios y ejecutar c\u00f3digo arbitrario en el contexto de SYSTEM. Era ZDI-CAN-22272."}], "id": "CVE-2024-7227", "lastModified": "2024-12-09T20:09:44.787", "metrics": {"cvssMetricV30": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 7.8, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "version": "3.0"}, "exploitabilityScore": 1.8, "impactScore": 5.9, "source": "zdi-disclosures@trendmicro.com", "type": "Secondary"}], "cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 7.8, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 1.8, "impactScore": 5.9, "source": "nvd@nist.gov", "type": "Primary"}]}, "published": "2024-11-22T22:15:15.297", "references": [{"source": "zdi-disclosures@trendmicro.com", "tags": ["Third Party Advisory"], "url": "https://www.zerodayinitiative.com/advisories/ZDI-24-1003/"}], "sourceIdentifier": "zdi-disclosures@trendmicro.com", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-59"}], "source": "zdi-disclosures@trendmicro.com", "type": "Secondary"}]}

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