CVE-2020-15530

{"containers": {"cna": {"affected": [{"product": "n/a", "vendor": "n/a", "versions": [{"status": "affected", "version": "n/a"}]}], "descriptions": [{"lang": "en", "value": "An issue was discovered in Valve Steam Client 2.10.91.91. The installer allows local users to gain NT AUTHORITY\\SYSTEM privileges because some parts of %PROGRAMFILES(X86)%\\Steam and/or %COMMONPROGRAMFILES(X86)%\\Steam have weak permissions during a critical time window. An attacker can make this time window arbitrarily long by using opportunistic locks."}], "problemTypes": [{"descriptions": [{"description": "n/a", "lang": "en", "type": "text"}]}], "providerMetadata": {"dateUpdated": "2020-07-05T00:31:24.000Z", "orgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca", "shortName": "mitre"}, "references": [{"tags": ["x_refsource_MISC"], "url": "http://daniels-it-blog.blogspot.com/2020/07/steam-arbitrary-code-execution-part-2.html"}], "x_legacyV4Record": {"CVE_data_meta": {"ASSIGNER": "cve@mitre.org", "ID": "CVE-2020-15530", "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 issue was discovered in Valve Steam Client 2.10.91.91. The installer allows local users to gain NT AUTHORITY\\SYSTEM privileges because some parts of %PROGRAMFILES(X86)%\\Steam and/or %COMMONPROGRAMFILES(X86)%\\Steam have weak permissions during a critical time window. An attacker can make this time window arbitrarily long by using opportunistic locks."}]}, "problemtype": {"problemtype_data": [{"description": [{"lang": "eng", "value": "n/a"}]}]}, "references": {"reference_data": [{"name": "http://daniels-it-blog.blogspot.com/2020/07/steam-arbitrary-code-execution-part-2.html", "refsource": "MISC", "url": "http://daniels-it-blog.blogspot.com/2020/07/steam-arbitrary-code-execution-part-2.html"}]}}}, "adp": [{"providerMetadata": {"orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2024-08-04T13:15:20.825Z"}, "title": "CVE Program Container", "references": [{"tags": ["x_refsource_MISC", "x_transferred"], "url": "http://daniels-it-blog.blogspot.com/2020/07/steam-arbitrary-code-execution-part-2.html"}]}]}, "cveMetadata": {"assignerOrgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca", "assignerShortName": "mitre", "cveId": "CVE-2020-15530", "datePublished": "2020-07-05T00:31:24.000Z", "dateReserved": "2020-07-05T00:00:00.000Z", "dateUpdated": "2024-08-04T13:15:20.825Z", "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:valvesoftware:steam_client:2.10.91.91:*:*:*:*:*:*:*", "matchCriteriaId": "30EC9032-8AAD-4B1D-A787-612469F59DB1", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "An issue was discovered in Valve Steam Client 2.10.91.91. The installer allows local users to gain NT AUTHORITY\\SYSTEM privileges because some parts of %PROGRAMFILES(X86)%\\Steam and/or %COMMONPROGRAMFILES(X86)%\\Steam have weak permissions during a critical time window. An attacker can make this time window arbitrarily long by using opportunistic locks."}, {"lang": "es", "value": "Se detect\u00f3 un problema en Valve Steam Client 2.10.91.91. El instalador permite a usuarios locales obtener privilegios NT AUTHORITY\\SYSTEM porque algunas partes de %PROGRAMFILES(X86)%\\Steam y/o %COMMONPROGRAMFILES(X86)%\\Steam presentan permisos d\u00e9biles durante una ventana de tiempo cr\u00edtica. Un atacante puede hacer que esta ventana de tiempo sea arbitrariamente larga usando bloqueos oportunistas"}], "id": "CVE-2020-15530", "lastModified": "2026-06-17T02:56:47.647", "metrics": {"cvssMetricV2": [{"acInsufInfo": false, "baseSeverity": "HIGH", "cvssData": {"accessComplexity": "LOW", "accessVector": "LOCAL", "authentication": "NONE", "availabilityImpact": "COMPLETE", "baseScore": 7.2, "confidentialityImpact": "COMPLETE", "integrityImpact": "COMPLETE", "vectorString": "AV:L/AC:L/Au:N/C:C/I:C/A:C", "version": "2.0"}, "exploitabilityScore": 3.9, "impactScore": 10.0, "obtainAllPrivilege": false, "obtainOtherPrivilege": false, "obtainUserPrivilege": false, "source": "nvd@nist.gov", "type": "Primary", "userInteractionRequired": false}], "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": "2020-07-05T01:15:10.790", "references": [{"source": "cve@mitre.org", "tags": ["Exploit", "Third Party Advisory"], "url": "http://daniels-it-blog.blogspot.com/2020/07/steam-arbitrary-code-execution-part-2.html"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Exploit", "Third Party Advisory"], "url": "http://daniels-it-blog.blogspot.com/2020/07/steam-arbitrary-code-execution-part-2.html"}], "sourceIdentifier": "cve@mitre.org", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-362"}], "source": "nvd@nist.gov", "type": "Primary"}]}

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