// For flags

CVE-2019-15316

 

Severity Score

7.0
*CVSS v3

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

2
*Multiple Sources

Exploited in Wild

-
*KEV

Decision

-
*SSVC
Descriptions

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.

Valve Steam Client para Windows hasta 2019-08-20 tiene permisos de carpeta débiles, lo que lleva a la escalada de privilegios (a NT AUTHORITY \ SYSTEM) mediante el uso diseñado de CreateMountPoint.exe y SetOpLock.exe para aprovechar una condición de carrera TOCTOU.

*Credits: N/A
CVSS Scores
Attack Vector
Local
Attack Complexity
High
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High
Attack Vector
Local
Attack Complexity
Medium
Authentication
None
Confidentiality
Complete
Integrity
Complete
Availability
Complete
* Common Vulnerability Scoring System
SSVC
  • Decision:-
Exploitation
-
Automatable
-
Tech. Impact
-
* Organization's Worst-case Scenario
Timeline
  • 2019-08-21 CVE Reserved
  • 2019-08-21 CVE Published
  • 2024-08-05 CVE Updated
  • 2024-08-05 First Exploit
  • 2024-08-14 EPSS Updated
  • ---------- Exploited in Wild
  • ---------- KEV Due Date
CWE
  • CWE-367: Time-of-check Time-of-use (TOCTOU) Race Condition
  • CWE-732: Incorrect Permission Assignment for Critical Resource
CAPEC
Affected Vendors, Products, and Versions
Vendor Product Version Other Status
Vendor Product Version Other Status <-- --> Vendor Product Version Other Status
Valvesoftware
Search vendor "Valvesoftware"
 Steam Client
Search vendor "Valvesoftware" for product "Steam Client"
 <= 2019-08-20
Search vendor "Valvesoftware" for product "Steam Client" and version " <= 2019-08-20"
-
Affected
in Microsoft
Search vendor "Microsoft"
 Windows
Search vendor "Microsoft" for product "Windows"
--
Safe