National Vulnerability Database

National Vulnerability Database

National Vulnerability
Database

CVE-2019-15316 Detail

Current Description

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.

Source:  MITRE
View Analysis Description

Severity



CVSS 3.x Severity and Metrics:

NIST CVSS score
NIST: NVD
Base Score: 7.0 HIGH
Vector:  CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

References to Advisories, Solutions, and Tools

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Hyperlink Resource
https://amonitoring.ru/article/onemore_steam_eop_0day/ Third Party Advisory
https://habr.com/ru/company/pm/blog/464367/ Third Party Advisory
https://www.youtube.com/watch?v=I93aH86BUaE Exploit Third Party Advisory
https://www.youtube.com/watch?v=ZCHrjP0cMew Exploit Third Party Advisory

Weakness Enumeration

CWE-ID CWE Name Source
CWE-264 Permissions, Privileges, and Access Controls NIST  

Known Affected Software Configurations Switch to CPE 2.2

Configuration 1 ( hide )
 cpe:2.3:a:valvesoftware:steam_client:*:*:*:*:*:*:*:*
     Show Matching CPE(s)
Up to (including)
2019-08-20
Running on/with
 cpe:2.3:o:microsoft:windows:-:*:*:*:*:*:*:*
     Show Matching CPE(s)


Change History

1 change record found - show changes

Quick Info

CVE Dictionary Entry:
CVE-2019-15316
NVD Published Date:
08/21/2019
NVD Last Modified:
08/30/2019