Plex Media Server < 1.19.3 Authenticated RCE

high Nessus Plugin ID 137326
New! Plugin Severity Now Using CVSS v3

The calculated severity for Plugins has been updated to use CVSS v3 by default. Plugins that do not have a CVSS v3 score will fall back to CVSS v2 for calculating severity. Severity display preferences can be toggled in the settings dropdown.

Synopsis

A client-server media player running on the remote host is affected by a remote code execution vulnerability.

Description

According to its self-reported version number, the version of Plex Media Server installed on the remote Windows host is prior to 1.19.3. It is, therefore, affected by an authenticated remote code execution vulnerability in the camera upload feature. An authenticated, remote attacker can exploit this, by uploading a malicious file via the camera upload feature, to cause arbitrary python code to be executed in the context of the current OS user..

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

Solution

Upgrade to Plex Media Server version 1.19.3 or later.

See Also

https://www.tenable.com/security/research/tra-2020-32

https://forums.plex.tv/t/security-regarding-cve-2020-5741/586819

Plugin Details

Severity: High

ID: 137326

File Name: plex_1_19_3.nasl

Version: 1.5

Type: combined

Agent: windows

Family: Windows

Published: 6/11/2020

Updated: 8/14/2020

Dependencies: plex_detect.nbin, os_fingerprint.nasl, plex_win_installed.nbin

Risk Information

CVSS Score Source: CVE-2020-5741

VPR

Risk Factor: High

Score: 7.4

CVSS v2

Risk Factor: Medium

Base Score: 6.5

Temporal Score: 5.4

Vector: AV:N/AC:L/Au:S/C:P/I:P/A:P

Temporal Vector: E:F/RL:OF/RC:C

CVSS v3

Risk Factor: High

Base Score: 7.2

Temporal Score: 6.7

Vector: CVSS:3.0/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

Temporal Vector: E:F/RL:O/RC:C

Vulnerability Information

CPE: cpe:/a:plex:plex_media_server

Required KB Items: installed_sw/Plex Media Server, Host/OS

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 5/7/2020

Vulnerability Publication Date: 5/7/2020

Exploitable With

Metasploit (Plex Unpickle Dict Windows RCE)

Reference Information

CVE: CVE-2020-5741