CVE-2021-42835

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Summary

CVECVE-2021-42835
StatePUBLIC
Assigner[email protected]
Source PriorityCVE Program / NVD first with legacy fallback
Published2021-12-08 15:15:00 UTC
Updated2021-12-13 17:14:00 UTC
DescriptionAn 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).

Risk And Classification

Problem Types: CWE-367

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Operating System Microsoft Windows - All All All
Application Plex Media Server All All All All

References

ReferenceSourceLinkTags
Media Server Downloads | Plex Media Server for Windows, Mac, Linux, FreeBSD and More MISC www.plex.tv
Local Privilege Plexcalation - IRON MISC ir-on.io
Security: Regarding CVE-2021-42835 - Announcements - Plex Forum MISC forums.plex.tv
experts_teams - BugSec MISC bugsec.com
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

Legacy QID Mappings

  • 691043 Free Berkeley Software Distribution (FreeBSD) Security Update for plex media server (98f78c7a-a08e-11ed-946e-002b67dfc673)

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