Privilege escalation

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...

Race condition

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...

CVE-2019-15316

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...

CVE-2019-14743

In Valve Steam Client for Windows through 2019-08-07, HKLM\SOFTWARE\Wow6432Node\Valve\Steam has explicit "Full control" for the Users group, which allows local users to gain NT AUTHORITY\SYSTEM access...

Valve: [steam client] Opening a specific steam:// url overwrites files at an arbitrary location

If a user opens steam://devkit-1/list-shortcuts?response=/tmp/testfile, a file /tmp/testfile will be created containing the response to this request. Another problem with this is that the file will be overwritten if it already exists. The owner of the file will be the same as the user that runs t...

CVE-2018-12270

In Valve Steam 1528829181 BETA, it is possible to perform a homograph / homoglyph attack to create fake URLs in the client, which may trick users into visiting unintended web sites...

Valve: Arbitrary File Write as SYSTEM from unprivileged user

Note: This report was reviewed and updated after a correction to program scope. Vulnerability ======== The Steam Client installs a "Steam Client Service" that runs as SYSTEM to update the steam application. This service executes from C:\Program Files x86\Common\Steam where permissions are properl...

Through the Server Info in a buffer overflow to achieve the Steam client RCE-vulnerability warning-the black bar safety net

In Steam and other V social game such as CSGO, Half-Life, TF2, built-in a looking for a server browser server browser, and a game server. In order to obtain information about these server information, the server browser using a method called server query server queries a specific UDP communicatio...

Valve Steam Client Detection Denial of Service Vulnerability

This vulnerability allows remote attackers to execute a denial of service attack on vulnerable installations of Valve Steam. Authentication is not required to exploit this vulnerability. The specific flaw exists within the Steam client detection protocol. By responding to a broadcast packet with ...

Windows Gather Steam Client Session Collector.

This module will collect Steam session information from an account set to autologin. This module requires Metasploit: https://metasploit.com/download Current source: https://github.com/rapid7/metasploit-framework class MetasploitModule 'Windows Gather Steam Client Session Collector.', 'Descriptio...

Valve Steam Client Detection

Binary data 6617.prm...

Steam v.54/894 Local Privilege Escalation Vulnerability

No description provided by source. Steam Multiple .exe's Local Privilage Escalation By: MrDoug mrdoug13atgmaildotcom Version Info: Steam windows client Built: Jun 30 2009, at 13:29:32 Steam API: v008 Steam Package versions: 54/894 Greetz: Slappywag, Doomchip, Bolo, Eliwood, and the rest. Special...