CVE-2019-15315: High severity steam client vulnerability

Published Aug 21, 2019
·
Updated

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.

Affected Software

2 affected components
Valvesoftware Steam Client<=2019-08-16
Microsoft Windows

Event History

Aug 21, 2019
CVE Published
via MITRE·07:35 PM
Data Sourced
via MITRE·07:35 PM
Description

Frequently Asked Questions

1

What is CVE-2019-15315?

CVE-2019-15315 is a vulnerability in Valve Steam Client for Windows that allows privilege escalation to NT AUTHORITY\SYSTEM.

2

How can local users exploit CVE-2019-15315?

Local users can exploit CVE-2019-15315 by replacing the current versions of SteamService.exe and SteamService.dll with older versions that lack the CVE-2019-14743 patch.

3

What is the severity of CVE-2019-15315?

CVE-2019-15315 has a severity rating of 7.8 (high).

4

Which software is affected by CVE-2019-15315?

The Valve Steam Client for Windows versions up to and including 2019-08-16 are affected by CVE-2019-15315.

5

Where can I find more information about CVE-2019-15315?

You can find more information about CVE-2019-15315 at the following link: https://xiaoyinl.github.io/steam_EoP_bypass.html

Contact

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