Vulnerability CVE-2019-15315


Published: 2019-08-21

Description:
Valve Steam Client for Windows through 2019-08-16 allows privilege escalation (to NT AUTHORITY\SYSTEM) because local users can replace the current versions of SteamService.exe and SteamService.dll with older versions that lack the CVE-2019-14743 patch.

Type:

CWE-264

(Permissions, Privileges, and Access Controls)

CVSS2 => (AV:L/AC:L/Au:N/C:C/I:C/A:C)

CVSS Base Score
Impact Subscore
Exploitability Subscore
7.2/10
10/10
3.9/10
Exploit range
Attack complexity
Authentication
Local
Low
No required
Confidentiality impact
Integrity impact
Availability impact
Complete
Complete
Complete
Affected software
Valvesoftware -> Steam client 

 References:
https://xiaoyinl.github.io/steam_EoP_bypass.html

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