CVE-2021-42835

Published: Dec 8, 2021Updated: Nov 21, 2024 Sources: CVE List NVDCWE-367

7.0HIGH

NVD MITRE

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).

No summary for this CVE yet.

CVSS Vector Breakdown

Exploitability

AV:LAttack Vector

Local

AC:HAttack Complexity

High

PR:LPrivileges Required

Low

UI:NUser Interaction

None

Scope

S:UScope

Unchanged

Impact

C:HConfidentiality

High

I:HIntegrity

High

A:HAvailability

High

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Weaknesses

CWE-367

Affected Products

plex

commercialaka plex media server

media serverMixed

Consumer Software / media-player

and 1 more affected products View all →

Exploitability

Official Patch Available

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Attack Graph

Products CVE Techniques Tactics

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MITRE ATT&CK

1 technique

Privilege Escalation

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References

https://www.plex.tv/media-server-downloads/

plex.tv

https://bugsec.com/experts_teams/

bugsec.com

https://ir-on.io/2021/12/02/local-privilege-plexcalation/

ir-on.io

and 1 more references View all →

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