Vulnerability identifier: #VU81438

Vulnerability risk: Low

CVSSv3.1: 2 [CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:N/I:L/A:N/E:U/RL:O/RC:C]

CVE-ID: N/A

CWE-ID: CWE-451

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
MediaWiki
Web applications / CMS

Vendor: MediaWiki.org

Description

The vulnerability allows a remote user to perform spoofing attack.

The vulnerability exists due to incorrect processing of permissions, which leads to users with incorrect permissions to be incorrectly displayed.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

MediaWiki: 1.40.0 - 1.40.0 rc.0, 1.39.0 - 1.39.4, 1.38.0 - 1.38.7, 1.37.0 - 1.37.6, 1.36.0 - 1.36.4

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External links
http://lists.wikimedia.org/hyperkitty/list/mediawiki-announce@lists.wikimedia.org/thread/BRWOWACCHMYRIS7JRTT6XD44X3362MVL/

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote authenticated privileged user via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.