#VU85559 Cross-site scripting in MediaWiki - CVE-2024-23174

Vulnerability identifier: #VU85559

Vulnerability risk: Low

CVSSv4.0: [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N/E:U/U:Clear]

CVE-ID: CVE-2024-23174

CWE-ID: CWE-79

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
MediaWiki
Web applications / CMS

Vendor: MediaWiki.org

Description

The disclosed vulnerability allows a remote attacker to perform cross-site scripting (XSS) attacks.

The vulnerability exists due to insufficient sanitization of user-supplied data in the PageTriage extension. A remote attacker can trick the victim to follow a specially crafted link and execute arbitrary HTML and script code in user's browser in context of vulnerable website.

Successful exploitation of this vulnerability may allow a remote attacker to steal potentially sensitive information, change appearance of the web page, perform phishing and drive-by-download attacks.

The following messages are affected:

• rev-deleted-user 
• pagetriage-tags-quickfilter-label 
• pagetriage-triage 
• pagetriage-filter-date-range-format-placeholder 
• pagetriage-filter-date-range-to 
• pagetriage-filter-date-range-from 
• pagetriage-filter-date-range-heading 
• pagetriage-filter-set-button 
• pagetriage-filter-reset-button

Mitigation
Install updates from vendor's website.

Vulnerable software versions

MediaWiki: 1.35 - 1.39.5, 1.40.0 rc.0 - 1.40.1

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External links
http://lists.wikimedia.org/hyperkitty/list/mediawiki-announce@lists.wikimedia.org/thread/ZHJ2P6MGGOB2GAHAVJEU4NRZDL5QPKGT/
http://gerrit.wikimedia.org/r/c/mediawiki/extensions/PageTriage/+/989177

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

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