In MediaWiki before 1.31.10 and 1.32.x through 1.34.x before 1.34.4, Special:UserRights exposes the existence of hidden users.

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available.

  - In MediaWiki before 1.31.10 and 1.32.x through 1.34.x before 1.34.4, Special:UserRights exposes the     existence of hidden users. (CVE-2020-25813)

Note that Nessus relies on the presence of the package as reported by the vendor.

There are packages installed that are affected by a vulnerability referenced in the following CVE:

  - In MediaWiki before 1.31.10 and 1.32.x through 1.34.x before 1.34.4, Special:UserRights exposes the
    existence of hidden users. (CVE-2020-25813)

https://lists.wikimedia.org/pipermail/mediawiki-announce/2020-Septembe r/000263.html

The 1.34.x series is now end-of-life and the 1.35.x series is a LTS release.

Note that Tenable Network Security has extracted the preceding description block directly from the Fedora update system website.
Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

Multiple security issues were discovered in MediaWiki, a website engine for collaborative work: SpecialUserRights could leak whether a user existed or not, multiple code paths lacked HTML sanitisation allowing for cross-site scripting and TOTP validation applied insufficient rate limiting against brute force attempts.

ID	Name	Product	Family	Type	Severity
317088	Linux Distros Unpatched Vulnerability : CVE-2020-25813	Nessus	Misc.	Local	medium
434373	SCA: security update for mediawiki/core (GHSA-c4rj-wrmq-52rj)	Tenable Cloud Security	SCA Checks	Local	medium
434373	SCA: security update for mediawiki/core (GHSA-c4rj-wrmq-52rj)	Tenable Self-Hosted Container Security	SCA Checks	Local	medium
144140	Fedora 33 : mediawiki / php-oojs-oojs-ui / php-wikimedia-assert / etc (2020-a4802c53d9)	Nessus	Fedora Local Security Checks	Local	high
140811	Debian DSA-4767-1 : mediawiki - security update	Nessus	Debian Local Security Checks	Local	high

Detections

Analytics

CVE-2020-25813

medium

Tenable Plugins

medium

medium

medium

high

high