MediaWiki up to 1.38.1 RSS Extension wgRSSAllowLinkTag cross site scripting

CVSS Meta Temp Score
CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.
Current Exploit Price (≈)
Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.
CTI Interest Score
Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
2.5$0-$5k0.00

Summaryinfo

A vulnerability was found in MediaWiki up to 1.38.1. It has been declared as problematic. This affects an unknown part of the component RSS Extension. Such manipulation of the argument wgRSSAllowLinkTag leads to cross site scripting. This vulnerability is traded as CVE-2022-34491. The attack may be launched remotely. Furthermore, there is an exploit available.

Detailsinfo

A vulnerability, which was classified as problematic, has been found in MediaWiki up to 1.38.1 (Content Management System). Affected by this issue is some unknown processing of the component RSS Extension. The manipulation of the argument wgRSSAllowLinkTag with an unknown input leads to a cross site scripting vulnerability. Using CWE to declare the problem leads to CWE-79. The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users. Impacted is integrity. CVE summarizes:

In the RSS extension for MediaWiki through 1.38.1, when the $wgRSSAllowLinkTag config variable was set to true, and a new RSS feed was created with certain XSS payloads within its description tags and added to the $wgRSSUrlWhitelist config variable, stored XSS could occur via MediaWiki's template system whenever that feed was loaded via the rss document tag.

The weakness was shared 06/26/2022. The advisory is available at gerrit.wikimedia.org. This vulnerability is handled as CVE-2022-34491 since 06/25/2022. Successful exploitation requires user interaction by the victim. Technical details as well as a public exploit are known. This vulnerability is assigned to T1059.007 by the MITRE ATT&CK project.

The exploit is available at phabricator.wikimedia.org. It is declared as proof-of-concept.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

Type

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 2.6
VulDB Meta Temp Score: 2.5

VulDB Base Score: 2.6
VulDB Temp Score: 2.5
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
💳💳💳💳💳💳
💳💳💳💳💳💳
💳💳💳💳💳💳
VectorComplexityAuthenticationConfidentialityIntegrityAvailability
UnlockUnlockUnlockUnlockUnlockUnlock
UnlockUnlockUnlockUnlockUnlockUnlock
UnlockUnlockUnlockUnlockUnlockUnlock

VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

Exploitinginfo

Class: Cross site scripting
CWE: CWE-79 / CWE-94 / CWE-74
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Access: Public
Status: Proof-of-Concept
Download: 🔍
Price Prediction: 🔍
Current Price Estimation: 🔍

0-DayUnlockUnlockUnlockUnlock
TodayUnlockUnlockUnlockUnlock

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍

Timelineinfo

06/25/2022 🔍
06/26/2022 +1 days 🔍
06/26/2022 +0 days 🔍
06/26/2022 +0 days 🔍

Sourcesinfo

Product: mediawiki.org

Advisory: gerrit.wikimedia.org
Status: Confirmed

CVE: CVE-2022-34491 (🔍)
GCVE (CVE): GCVE-0-2022-34491
GCVE (VulDB): GCVE-100-202754
scip Labs: https://www.scip.ch/en/?labs.20161013

Entryinfo

Created: 06/26/2022 08:03
Changes: 06/26/2022 08:03 (42)
Complete: 🔍
Cache ID: 216::103

If you want to get best quality of vulnerability data, you may have to visit VulDB.

Discussion

No comments yet. Languages: en.

Please log in to comment.

◂ PreviousOverviewNext ▸

Do you want to use VulDB in your project?

Use the official API to access entries easily!