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National Vulnerability Database

National Vulnerability Database

NVD

  1. Vulnerabilities

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.


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


NVD Analysts use publicly available information to associate vector strings and CVSS scores. We also display any CVSS information provided within the CVE List from the CNA.

Note: NVD Analysts have published a CVSS score for this CVE based on publicly available information at the time of analysis. The CNA has not provided a score within the CVE List.

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-732 Incorrect Permission Assignment for Critical Resource cwe source acceptance level NIST  
CWE-367 Time-of-check Time-of-use (TOCTOU) Race Condition cwe source acceptance level NIST  

Known Affected Software Configurations Switch to CPE 2.2

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Change History

2 change records found show changes

Quick Info

CVE Dictionary Entry:
CVE-2019-15316
NVD Published Date:
08/21/2019
NVD Last Modified:
08/24/2020
Source:
MITRE