Improper access control in MediaWiki - CVE-2023-37303
Published: July 3, 2023
Vulnerability identifier: #VU77877
CSH Severity: Medium
CVSS v4: 6.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2023-37303
CWE-ID: CWE-284
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to gain unauthorized access to otherwise restricted functionality.
The vulnerability exists due to improper access restrictions. A remote attacker can cause attempt to block a user fails after a temporary browser hang and a DBQueryDisconnectedError error message.
Affected software
MediaWiki
How to mitigate CVE-2023-37303
Install updates from vendor's website.
MediaWiki - addressed in versions 1.35.11, 1.38.7, 1.39.4, 1.40.0
External References
- https://gerrit.wikimedia.org/r/q/I10a9273c542576b3f7bb38de68dcd2aa41cfb1b0
- https://phabricator.wikimedia.org/T338276
- https://gerrit.wikimedia.org/r/c/mediawiki/extensions/CheckUser/+/932823/
- https://lists.wikimedia.org/hyperkitty/list/mediawiki-announce@lists.wikimedia.org/thread/4GNSSE2VECVOPWE2NUKWD4C5IOSSF73R/