6.5
MEDIUM
CVE-2018-21031
Plex Media Server Token Validation Bypass in Tautulli
Description

Tautulli versions 2.1.38 and below allows remote attackers to bypass intended access control in Plex Media Server because the X-Plex-Token is mishandled and can be retrieved from Tautulli. NOTE: Initially, this id was associated with Plex Media Server 1.18.2.2029-36236cc4c as the affected product and version. Further research indicated that Tautulli is the correct affected product.

INFO

Published Date :

Nov. 18, 2019, 5:15 p.m.

Last Modified :

April 18, 2022, 6:09 p.m.

Remotely Exploitable :

Yes !

Impact Score :

3.6

Exploitability Score :

2.8
Public PoC/Exploit Available at Github

CVE-2018-21031 has a 1 public PoC/Exploit available at Github. Go to the Public Exploits tab to see the list.

Affected Products

The following products are affected by CVE-2018-21031 vulnerability. Even if cvefeed.io is aware of the exact versions of the products that are affected, the information is not represented in the table below.

ID Vendor Product Action
1 Plex media_server
References to Advisories, Solutions, and Tools

Here, you will find a curated list of external links that provide in-depth information, practical solutions, and valuable tools related to CVE-2018-21031.

URL Resource
https://forums.plex.tv/t/security-regarding-cve-2018-21031/493286 Third Party Advisory
https://twitter.com/GerardFuguet/status/1009937529573912576 Third Party Advisory
https://www.elladodelmal.com/2018/08/shodan-es-de-cine-hacking-tautulli-un.html Exploit Third Party Advisory
https://www.exploit-db.com/docs/47790 Exploit Third Party Advisory VDB Entry

We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).

Automatic monitor github cve using Github Actions

Python

Updated: 2 months ago
1 stars 56 fork 56 watcher
Born at : April 7, 2021, 11:16 a.m. This repo has been linked 1007 different CVEs too.

Results are limited to the first 15 repositories due to potential performance issues.

The following list is the news that have been mention CVE-2018-21031 vulnerability anywhere in the article.

The following table lists the changes that have been made to the CVE-2018-21031 vulnerability over time.

Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.

  • CVE Modified by [email protected]

    May. 14, 2024

    Action Type Old Value New Value
  • Modified Analysis by [email protected]

    Apr. 18, 2022

    Action Type Old Value New Value
    Changed Reference Type https://www.exploit-db.com/docs/47790 No Types Assigned https://www.exploit-db.com/docs/47790 Exploit, Third Party Advisory, VDB Entry
  • CPE Deprecation Remap by [email protected]

    Dec. 10, 2021

    Action Type Old Value New Value
    Changed CPE Configuration OR *cpe:2.3:a:plex:plex_media_server:1.18.2.2029-36236cc4c:*:*:*:*:*:*:* OR *cpe:2.3:a:plex:media_server:1.18.2.2029-36236cc4c:*:*:*:*:*:*:*
  • CVE Modified by [email protected]

    Dec. 19, 2019

    Action Type Old Value New Value
    Added Reference https://www.exploit-db.com/docs/47790 [No Types Assigned]
  • Initial Analysis by [email protected]

    Dec. 03, 2019

    Action Type Old Value New Value
    Added CVSS V2 NIST (AV:N/AC:L/Au:S/C:P/I:N/A:N)
    Added CVSS V3.1 NIST AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
    Changed Reference Type https://forums.plex.tv/t/security-regarding-cve-2018-21031/493286 No Types Assigned https://forums.plex.tv/t/security-regarding-cve-2018-21031/493286 Third Party Advisory
    Changed Reference Type https://twitter.com/GerardFuguet/status/1009937529573912576 No Types Assigned https://twitter.com/GerardFuguet/status/1009937529573912576 Third Party Advisory
    Changed Reference Type https://www.elladodelmal.com/2018/08/shodan-es-de-cine-hacking-tautulli-un.html No Types Assigned https://www.elladodelmal.com/2018/08/shodan-es-de-cine-hacking-tautulli-un.html Exploit, Third Party Advisory
    Added CWE NIST CWE-522
    Added CPE Configuration OR *cpe:2.3:a:plex:plex_media_server:1.18.2.2029-36236cc4c:*:*:*:*:*:*:*
  • CVE Modified by [email protected]

    Nov. 27, 2019

    Action Type Old Value New Value
    Changed Description Plex Media Server 1.18.2.2029-36236cc4c allows remote attackers to bypass intended access control because X-Plex-Token is mishandled, and can be retrieved from Tautulli. Tautulli versions 2.1.38 and below allows remote attackers to bypass intended access control in Plex Media Server because the X-Plex-Token is mishandled and can be retrieved from Tautulli. NOTE: Initially, this id was associated with Plex Media Server 1.18.2.2029-36236cc4c as the affected product and version. Further research indicated that Tautulli is the correct affected product.
    Added Reference https://forums.plex.tv/t/security-regarding-cve-2018-21031/493286 [No Types Assigned]
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days. Following chart shows the EPSS score history of the vulnerability.
CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorizes the common flaws or weaknesses that can lead to vulnerabilities. CVE-2018-21031 is associated with the following CWEs:

Exploit Prediction

EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.

0.46 }} -0.16%

score

0.75958

percentile

CVSS31 - Vulnerability Scoring System
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability