{
  "id": "CVE-2020-15530",
  "sourceIdentifier": "cve@mitre.org",
  "published": "2020-07-05T01:15:10.790",
  "lastModified": "2024-11-21T05:05:42.240",
  "vulnStatus": "Modified",
  "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"
    }
  ],
  "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",
          "baseScore": 7.8,
          "baseSeverity": "HIGH",
          "attackVector": "LOCAL",
          "attackComplexity": "LOW",
          "privilegesRequired": "LOW",
          "userInteraction": "NONE",
          "scope": "UNCHANGED",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "availabilityImpact": "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",
          "baseScore": 7.2,
          "accessVector": "LOCAL",
          "accessComplexity": "LOW",
          "authentication": "NONE",
          "confidentialityImpact": "COMPLETE",
          "integrityImpact": "COMPLETE",
          "availabilityImpact": "COMPLETE"
        },
        "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-362"
        }
      ]
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "operator": "OR",
          "negate": false,
          "cpeMatch": [
            {
              "vulnerable": true,
              "criteria": "cpe:2.3:a:valvesoftware:steam_client:2.10.91.91:*:*:*:*:*:*:*",
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  "references": [
    {
      "url": "http://daniels-it-blog.blogspot.com/2020/07/steam-arbitrary-code-execution-part-2.html",
      "source": "cve@mitre.org",
      "tags": [
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        "Third Party Advisory"
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    {
      "url": "http://daniels-it-blog.blogspot.com/2020/07/steam-arbitrary-code-execution-part-2.html",
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
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}