CVE-2020-15530

NameCVE-2020-15530
DescriptionAn issue was discovered in Valve Steam Client 2.10.91.91. The installer allows local users to gain NT AUTHORITY\SYSTEM 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.
SourceCVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
steam (PTS)jessie/non-free1.0.0.49-1fixed
stretch/non-free1.0.0.54-2fixed
buster/non-free1.0.0.68-1~deb10u1fixed
bullseye/non-free1.0.0.68-1fixed

The information below is based on the following data on fixed versions.

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
steamsource(unstable)(not affected)

Notes

- steam <not-affected> (Steam on Windows)

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