CVE-2020-13657

{"containers": {"cna": {"affected": [{"product": "n/a", "vendor": "n/a", "versions": [{"status": "affected", "version": "n/a"}]}], "datePublic": "2020-03-03T00:00:00.000Z", "descriptions": [{"lang": "en", "value": "An elevation of privilege vulnerability exists in Avast Free Antivirus and AVG AntiVirus Free before 20.4 due to improperly handling hard links. The vulnerability allows local users to take control of arbitrary files."}], "problemTypes": [{"descriptions": [{"description": "n/a", "lang": "en", "type": "text"}]}], "providerMetadata": {"dateUpdated": "2020-06-29T17:51:57.000Z", "orgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca", "shortName": "mitre"}, "references": [{"tags": ["x_refsource_CONFIRM"], "url": "https://forum.avast.com/index.php?topic=234638.0"}, {"tags": ["x_refsource_CONFIRM"], "url": "https://forum.avast.com/index.php?topic=232423.0"}], "x_legacyV4Record": {"CVE_data_meta": {"ASSIGNER": "cve@mitre.org", "ID": "CVE-2020-13657", "STATE": "PUBLIC"}, "affects": {"vendor": {"vendor_data": [{"product": {"product_data": [{"product_name": "n/a", "version": {"version_data": [{"version_value": "n/a"}]}}]}, "vendor_name": "n/a"}]}}, "data_format": "MITRE", "data_type": "CVE", "data_version": "4.0", "description": {"description_data": [{"lang": "eng", "value": "An elevation of privilege vulnerability exists in Avast Free Antivirus and AVG AntiVirus Free before 20.4 due to improperly handling hard links. The vulnerability allows local users to take control of arbitrary files."}]}, "problemtype": {"problemtype_data": [{"description": [{"lang": "eng", "value": "n/a"}]}]}, "references": {"reference_data": [{"name": "https://forum.avast.com/index.php?topic=234638.0", "refsource": "CONFIRM", "url": "https://forum.avast.com/index.php?topic=234638.0"}, {"name": "https://forum.avast.com/index.php?topic=232423.0", "refsource": "CONFIRM", "url": "https://forum.avast.com/index.php?topic=232423.0"}]}}}, "adp": [{"providerMetadata": {"orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2024-08-04T12:25:16.279Z"}, "title": "CVE Program Container", "references": [{"tags": ["x_refsource_CONFIRM", "x_transferred"], "url": "https://forum.avast.com/index.php?topic=234638.0"}, {"tags": ["x_refsource_CONFIRM", "x_transferred"], "url": "https://forum.avast.com/index.php?topic=232423.0"}]}]}, "cveMetadata": {"assignerOrgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca", "assignerShortName": "mitre", "cveId": "CVE-2020-13657", "datePublished": "2020-06-29T17:51:57.000Z", "dateReserved": "2020-05-28T00:00:00.000Z", "dateUpdated": "2024-08-04T12:25:16.279Z", "state": "PUBLISHED"}, "dataType": "CVE_RECORD", "dataVersion": "5.1"}

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{"affected": [{"affectedData": [{"product": "n/a", "vendor": "n/a", "versions": [{"status": "affected", "version": "n/a"}]}], "source": "cve@mitre.org"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:avast:avg_antivirus:*:*:*:*:free:*:*:*", "matchCriteriaId": "DAB05E52-87C5-4597-835F-8EB6C35759F9", "versionEndExcluding": "20.4", "vulnerable": true}, {"criteria": "cpe:2.3:a:avast:free_antivirus:*:*:*:*:*:*:*:*", "matchCriteriaId": "3305B8C7-755C-4ADF-B95B-923EC073296B", "versionEndExcluding": "20.4", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "An elevation of privilege vulnerability exists in Avast Free Antivirus and AVG AntiVirus Free before 20.4 due to improperly handling hard links. The vulnerability allows local users to take control of arbitrary files."}, {"lang": "es", "value": "Se presenta una vulnerabilidad de elevaci\u00f3n de privilegios en Avast Free Antivirus y AVG AntiVirus Free versiones anteriores a 20.4, debido a un manejo inapropiado de los enlaces f\u00edsicos. La vulnerabilidad permite a usuarios locales tomar el control de archivos arbitrarios"}], "id": "CVE-2020-13657", "lastModified": "2026-06-17T02:53:31.313", "metrics": {"cvssMetricV2": [{"acInsufInfo": false, "baseSeverity": "LOW", "cvssData": {"accessComplexity": "LOW", "accessVector": "LOCAL", "authentication": "NONE", "availabilityImpact": "NONE", "baseScore": 2.1, "confidentialityImpact": "NONE", "integrityImpact": "PARTIAL", "vectorString": "AV:L/AC:L/Au:N/C:N/I:P/A:N", "version": "2.0"}, "exploitabilityScore": 3.9, "impactScore": 2.9, "obtainAllPrivilege": false, "obtainOtherPrivilege": false, "obtainUserPrivilege": false, "source": "nvd@nist.gov", "type": "Primary", "userInteractionRequired": false}], "cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "NONE", "baseScore": 5.5, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N", "version": "3.1"}, "exploitabilityScore": 1.8, "impactScore": 3.6, "source": "nvd@nist.gov", "type": "Primary"}]}, "published": "2020-06-29T18:15:11.643", "references": [{"source": "cve@mitre.org", "tags": ["Release Notes", "Vendor Advisory"], "url": "https://forum.avast.com/index.php?topic=232423.0"}, {"source": "cve@mitre.org", "tags": ["Vendor Advisory"], "url": "https://forum.avast.com/index.php?topic=234638.0"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Release Notes", "Vendor Advisory"], "url": "https://forum.avast.com/index.php?topic=232423.0"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Vendor Advisory"], "url": "https://forum.avast.com/index.php?topic=234638.0"}], "sourceIdentifier": "cve@mitre.org", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "NVD-CWE-noinfo"}], "source": "nvd@nist.gov", "type": "Primary"}]}

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