{
  "id": "CVE-2021-30481",
  "sourceIdentifier": "cve@mitre.org",
  "published": "2021-04-10T19:15:11.707",
  "lastModified": "2022-02-07T19:09:13.950",
  "vulnStatus": "Analyzed",
  "descriptions": [
    {
      "lang": "en",
      "value": "Valve Steam through 2021-04-10, when a Source engine game is installed, allows remote authenticated users to execute arbitrary code because of a buffer overflow that occurs for a Steam invite after one click."
    },
    {
      "lang": "es",
      "value": "Valve Steam hasta el 10-04-2021, cuando un juego del motor de Origen es instalado, permite a usuarios autenticados remotos ejecutar c\u00f3digo arbitrario debido a un desbordamiento del b\u00fafer que ocurre para una invitaci\u00f3n de Steam despu\u00e9s de un clic"
    }
  ],
  "metrics": {
    "cvssMetricV31": [
      {
        "source": "nvd@nist.gov",
        "type": "Primary",
        "cvssData": {
          "version": "3.1",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H",
          "attackVector": "NETWORK",
          "attackComplexity": "LOW",
          "privilegesRequired": "LOW",
          "userInteraction": "REQUIRED",
          "scope": "CHANGED",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "availabilityImpact": "HIGH",
          "baseScore": 9.0,
          "baseSeverity": "CRITICAL"
        },
        "exploitabilityScore": 2.3,
        "impactScore": 6.0
      },
      {
        "source": "cve@mitre.org",
        "type": "Secondary",
        "cvssData": {
          "version": "3.1",
          "vectorString": "CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:H/I:H/A:H",
          "attackVector": "NETWORK",
          "attackComplexity": "HIGH",
          "privilegesRequired": "LOW",
          "userInteraction": "REQUIRED",
          "scope": "CHANGED",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "availabilityImpact": "HIGH",
          "baseScore": 8.0,
          "baseSeverity": "HIGH"
        },
        "exploitabilityScore": 1.3,
        "impactScore": 6.0
      }
    ],
    "cvssMetricV2": [
      {
        "source": "nvd@nist.gov",
        "type": "Primary",
        "cvssData": {
          "version": "2.0",
          "vectorString": "AV:N/AC:M/Au:S/C:P/I:P/A:P",
          "accessVector": "NETWORK",
          "accessComplexity": "MEDIUM",
          "authentication": "SINGLE",
          "confidentialityImpact": "PARTIAL",
          "integrityImpact": "PARTIAL",
          "availabilityImpact": "PARTIAL",
          "baseScore": 6.0
        },
        "baseSeverity": "MEDIUM",
        "exploitabilityScore": 6.8,
        "impactScore": 6.4,
        "acInsufInfo": false,
        "obtainAllPrivilege": false,
        "obtainUserPrivilege": false,
        "obtainOtherPrivilege": false,
        "userInteractionRequired": true
      }
    ]
  },
  "weaknesses": [
    {
      "source": "nvd@nist.gov",
      "type": "Primary",
      "description": [
        {
          "lang": "en",
          "value": "CWE-120"
        }
      ]
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "operator": "OR",
          "negate": false,
          "cpeMatch": [
            {
              "vulnerable": true,
              "criteria": "cpe:2.3:a:valvesoftware:steam_client:*:*:*:*:*:*:*:*",
              "versionEndIncluding": "2021-04-10",
              "matchCriteriaId": "3F4F455F-5897-4F4D-B3BE-8CF1CEDB1627"
            }
          ]
        }
      ]
    }
  ],
  "references": [
    {
      "url": "https://news.ycombinator.com/item?id=26762170",
      "source": "cve@mitre.org",
      "tags": [
        "Issue Tracking",
        "Third Party Advisory"
      ]
    },
    {
      "url": "https://twitter.com/floesen_/status/1337107178096881666",
      "source": "cve@mitre.org",
      "tags": [
        "Third Party Advisory"
      ]
    },
    {
      "url": "https://twitter.com/the_secret_club/status/1380868759129296900",
      "source": "cve@mitre.org",
      "tags": [
        "Exploit",
        "Third Party Advisory"
      ]
    },
    {
      "url": "https://www.youtube.com/watch?v=rNQn--9xR1Q",
      "source": "cve@mitre.org",
      "tags": [
        "Exploit",
        "Third Party Advisory"
      ]
    }
  ]
}