PT-2021-24245 · Mediawiki · Mediawiki

Dylsss · Published 2021-12-24 · Updated 2024-03-06 · CVE-2021-45473

Positive Technologies (AI Summary)

CVSS v3.1

6.1

Medium

Base vector

AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Name of the Vulnerable Software and Affected Versions: MediaWiki versions 1.37 and earlier

Description: The issue allows XSS in Wikibase item descriptions, which is triggered when visiting an action=info URL, also known as a page-information sidebar.

Recommendations: For MediaWiki versions 1.37 and earlier, update to a version that contains a fix for this issue. As a temporary workaround, consider restricting access to the action=info URL until a patch is available. Avoid using the Wikibase item descriptions feature in the affected versions until the issue is resolved.

Exploit

Fix

XSS

Weakness Enumeration

CWE-79

Related Identifiers

BIT-MEDIAWIKI-2021-45473

CVE-2021-45473

Affected Products

Mediawiki

References · 11

• 🔥 https://phabricator.wikimedia.org/T294693 · Exploit
• https://nvd.nist.gov/vuln/detail/CVE-2021-45473 · Security Note
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/Z7JNQA53K675TQBBJPZRAG5ZT6XES3IS · Vendor Advisory
• https://ubuntu.com/security/CVE-2021-45473 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2021-45473 · Vendor Advisory
• https://osv.dev/vulnerability/BIT-mediawiki-2021-45473 · Vendor Advisory
• https://osv.dev/vulnerability/UBUNTU-CVE-2021-45473 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2021-45473 · Security Note
• https://gerrit.wikimedia.org/r/q/I3cd080a1a7dacd7396d37ee0c98cff0b4e241f8d · Note
• https://t.me/cvenotify/26400 · Telegram Post
• https://t.me/cvenotify/24872 · Telegram Post