2020-07-05 00:31:24
mitre
PUBLISHED
An issue was discovered in Valve Steam Client 2.10.91.91. The installer allows local users to gain NT AUTHORITYSYSTEM privileges because some parts of %PROGRAMFILES(X86)%Steam and/or %COMMONPROGRAMFILES(X86)%Steam have weak permissions during a critical time window. An attacker can make this time window arbitrarily long by using opportunistic locks.