FKIE_CVE-2019-15316

Vulnerability from fkie_nvd - Published: 2019-08-21 20:15 - Updated: 2024-11-21 04:28
Severity ?
7.0 (High) - CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
Summary
Valve Steam Client for Windows through 2019-08-20 has weak folder permissions, leading to privilege escalation (to NT AUTHORITY\SYSTEM) via crafted use of CreateMountPoint.exe and SetOpLock.exe to leverage a TOCTOU race condition.
References
cve@mitre.orghttps://amonitoring.ru/article/onemore_steam_eop_0day/Third Party Advisory
cve@mitre.orghttps://habr.com/ru/company/pm/blog/464367/Third Party Advisory
cve@mitre.orghttps://www.youtube.com/watch?v=I93aH86BUaEExploit, Third Party Advisory
cve@mitre.orghttps://www.youtube.com/watch?v=ZCHrjP0cMewExploit, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://amonitoring.ru/article/onemore_steam_eop_0day/Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://habr.com/ru/company/pm/blog/464367/Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://www.youtube.com/watch?v=I93aH86BUaEExploit, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://www.youtube.com/watch?v=ZCHrjP0cMewExploit, Third Party Advisory
Impacted products
Vendor Product Version
valvesoftware steam_client *
microsoft windows -
To clipboard 

{
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:valvesoftware:steam_client:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "4D38C019-AD92-45CA-B9C6-4EBAEB13BBDB",
              "versionEndIncluding": "2019-08-20",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        },
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:o:microsoft:windows:-:*:*:*:*:*:*:*",
              "matchCriteriaId": "A2572D17-1DE6-457B-99CC-64AFD54487EA",
              "vulnerable": false
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ],
      "operator": "AND"
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "Valve Steam Client for Windows through 2019-08-20 has weak folder permissions, leading to privilege escalation (to NT AUTHORITY\\SYSTEM) via crafted use of CreateMountPoint.exe and SetOpLock.exe to leverage a TOCTOU race condition."
    },
    {
      "lang": "es",
      "value": "Valve Steam Client para Windows hasta 2019-08-20 tiene permisos de carpeta d\u00e9biles, lo que lleva a la escalada de privilegios (a NT AUTHORITY \\ SYSTEM) mediante el uso dise\u00f1ado de CreateMountPoint.exe y SetOpLock.exe para aprovechar una condici\u00f3n de carrera TOCTOU."
    }
  ],
  "id": "CVE-2019-15316",
  "lastModified": "2024-11-21T04:28:26.183",
  "metrics": {
    "cvssMetricV2": [
      {
        "acInsufInfo": false,
        "baseSeverity": "MEDIUM",
        "cvssData": {
          "accessComplexity": "MEDIUM",
          "accessVector": "LOCAL",
          "authentication": "NONE",
          "availabilityImpact": "COMPLETE",
          "baseScore": 6.9,
          "confidentialityImpact": "COMPLETE",
          "integrityImpact": "COMPLETE",
          "vectorString": "AV:L/AC:M/Au:N/C:C/I:C/A:C",
          "version": "2.0"
        },
        "exploitabilityScore": 3.4,
        "impactScore": 10.0,
        "obtainAllPrivilege": false,
        "obtainOtherPrivilege": false,
        "obtainUserPrivilege": false,
        "source": "nvd@nist.gov",
        "type": "Primary",
        "userInteractionRequired": false
      }
    ],
    "cvssMetricV30": [
      {
        "cvssData": {
          "attackComplexity": "HIGH",
          "attackVector": "LOCAL",
          "availabilityImpact": "HIGH",
          "baseScore": 7.0,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H",
          "version": "3.0"
        },
        "exploitabilityScore": 1.0,
        "impactScore": 5.9,
        "source": "nvd@nist.gov",
        "type": "Primary"
      }
    ]
  },
  "published": "2019-08-21T20:15:12.930",
  "references": [
    {
      "source": "cve@mitre.org",
      "tags": [
        "Third Party Advisory"
      ],
      "url": "https://amonitoring.ru/article/onemore_steam_eop_0day/"
    },
    {
      "source": "cve@mitre.org",
      "tags": [
        "Third Party Advisory"
      ],
      "url": "https://habr.com/ru/company/pm/blog/464367/"
    },
    {
      "source": "cve@mitre.org",
      "tags": [
        "Exploit",
        "Third Party Advisory"
      ],
      "url": "https://www.youtube.com/watch?v=I93aH86BUaE"
    },
    {
      "source": "cve@mitre.org",
      "tags": [
        "Exploit",
        "Third Party Advisory"
      ],
      "url": "https://www.youtube.com/watch?v=ZCHrjP0cMew"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Third Party Advisory"
      ],
      "url": "https://amonitoring.ru/article/onemore_steam_eop_0day/"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Third Party Advisory"
      ],
      "url": "https://habr.com/ru/company/pm/blog/464367/"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Exploit",
        "Third Party Advisory"
      ],
      "url": "https://www.youtube.com/watch?v=I93aH86BUaE"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Exploit",
        "Third Party Advisory"
      ],
      "url": "https://www.youtube.com/watch?v=ZCHrjP0cMew"
    }
  ],
  "sourceIdentifier": "cve@mitre.org",
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-367"
        },
        {
          "lang": "en",
          "value": "CWE-732"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    }
  ]
}


Log in or create an account to share your comment.




Tags
Taxonomy of the tags.




Sightings

Author Source Type Date

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



Detection rules are retrieved from Rulezet.