Unrated severityNVD Advisory· Published Dec 8, 2021· Updated Aug 4, 2024
CVE-2021-42835
CVE-2021-42835
Description
An issue was discovered in Plex Media Server through 1.24.4.5081-e362dc1ee. An attacker (with a foothold in a endpoint via a low-privileged user account) can access the exposed RPC service of the update service component. This RPC functionality allows the attacker to interact with the RPC functionality and execute code from a path of his choice (local, or remote via SMB) because of a TOCTOU race condition. This code execution is in the context of the Plex update service (which runs as SYSTEM).
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Affected products
2- Plex/Media Serverdescription
- Range: <=1.24.4.5081-e362dc1ee
Patches
Vulnerability mechanics
References
4- bugsec.com/experts_teams/mitrex_refsource_MISC
- forums.plex.tv/t/security-regarding-cve-2021-42835/761510mitrex_refsource_MISC
- ir-on.io/2021/12/02/local-privilege-plexcalation/mitrex_refsource_MISC
- www.plex.tv/media-server-downloads/mitrex_refsource_MISC
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