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FreeBSD : Plex Media Server -- Information Disclosure Vulnerability (337960ec-b5dc-11e8-ac58-a4badb2f4699)

critical Nessus Plugin ID 117441

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Synopsis

The remote FreeBSD host is missing one or more security-related updates.

Description

Chris reports :

The XML parsing engine for Plex Media Server's SSDP/UPNP functionality is vulnerable to an XML External Entity Processing (XXE) attack.
Unauthenticated attackers on the same LAN can use this vulnerability to :

- Access arbitrary files from the filesystem with the same permission as the user account running Plex.

- Initiate SMB connections to capture NetNTLM challenge/response and crack to clear-text password.

- Initiate SMB connections to relay NetNTLM challenge/response and achieve Remote Command Execution in Windows domains.

Solution

Update the affected packages.

See Also

https://seclists.org/fulldisclosure/2018/Aug/1

http://www.nessus.org/u?fdce27cf

Plugin Details

Severity: Critical

ID: 117441

File Name: freebsd_pkg_337960ecb5dc11e8ac58a4badb2f4699.nasl

Version: 1.4

Type: local

Published: 9/12/2018

Updated: 4/5/2019

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 6.7

CVSS v2

Risk Factor: High

Base Score: 7.5

Temporal Score: 5.9

Vector: CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:P

CVSS v3

Risk Factor: Critical

Base Score: 9.8

Temporal Score: 8.8

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

Temporal Vector: CVSS:3.0/E:P/RL:O/RC:C

Vulnerability Information

CPE: p-cpe:/a:freebsd:freebsd:plexmediaserver, p-cpe:/a:freebsd:freebsd:plexmediaserver-plexpass, cpe:/o:freebsd:freebsd

Required KB Items: Host/local_checks_enabled, Host/FreeBSD/release, Host/FreeBSD/pkg_info

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 9/11/2018

Vulnerability Publication Date: 8/1/2018

Reference Information

CVE: CVE-2018-13415