User Blocking Issue in CheckUser Extension for MediaWiki by Wikimedia
CVE-2023-37303

9.8CRITICAL

Key Information:

Vendor

Mediawiki
Status
Mediawiki
Vendor
CVE Published:
30 June 2023

What is CVE-2023-37303?

A vulnerability has been identified in the CheckUser extension for MediaWiki versions up to 1.39.3, where blocking a user may fail under specific conditions that include a temporary browser hang, leading to a DBQueryDisconnectedError error. This could interfere with the intended blocking functionality, posing a potential risk for user management within the MediaWiki environment.

References

https://phabricator.wikimedia.org/T338276
https://gerrit.wikimedia.org/r/q/I10a9273c542576b3f7bb38d...

CVSS V3.1

Score:
9.8
Severity:
CRITICAL
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.