PT-2019-13811 · Valve · Valve Steam Client

Xi-Tauw · Published 2019-08-07 · Updated 2020-08-24 · CVE-2019-14743

Positive Technologies (AI Summary)

CVSS v2.0

7.2

High

Base vector

AV:L/AC:L/Au:N/C:C/I:C/A:C

Name of the Vulnerable Software and Affected Versions Valve Steam Client for Windows versions prior to 2019-08-07

Description The issue allows local users to gain NT AUTHORITYSYSTEM access due to explicit "Full control" for the Users group in the HKLMSOFTWAREWow6432NodeValveSteam registry key.

Recommendations For versions prior to 2019-08-07, consider restricting access to the HKLMSOFTWAREWow6432NodeValveSteam registry key to prevent local users from gaining elevated privileges.

Exploit

Fix

Incorrect Permission

Weakness Enumeration

CWE-732

Related Identifiers

CVE-2019-14743

Affected Products

Valve Steam Client

References · 5

• 🔥 https://habr.com/ru/company/pm/blog/462479 · Exploit
• 🔥 https://amonitoring.ru/article/steamclient-0day · Exploit
• https://nvd.nist.gov/vuln/detail/CVE-2019-14743 · Security Note
• https://osv.dev/vulnerability/CVE-2019-14743 · Vendor Advisory
• https://github.com/alexanderbittner/steam-privesc · Note