CVE-2023-37303 — CRITICAL (9.8)

Q: How severe is CVE-2023-37303?

CVE-2023-37303 has been rated CRITICAL with a CVSS base score of 9.8/10. This is considered a critical vulnerability requiring immediate attention.

Q: Is there a patch for CVE-2023-37303?

Check the references section above for vendor advisories and patch information. Affected products include: Mediawiki Mediawiki.

Vulnerability Description

An issue was discovered in the CheckUser extension for MediaWiki through 1.39.3. In certain situations, an attempt to block a user fails after a temporary browser hang and a DBQueryDisconnectedError error message.

CVSS Score

9.8

CRITICAL

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality

HIGH

Integrity

HIGH

Availability

HIGH

Affected Products

Vendor	Product	Versions
Mediawiki	Mediawiki	<= 1.39.3

Related Weaknesses (CWE)

CWE-754

References

https://gerrit.wikimedia.org/r/q/I10a9273c542576b3f7bb38de68dcd2aa41cfb1b0Vendor Advisory
https://phabricator.wikimedia.org/T338276ExploitIssue TrackingPatch
https://gerrit.wikimedia.org/r/q/I10a9273c542576b3f7bb38de68dcd2aa41cfb1b0Vendor Advisory
https://phabricator.wikimedia.org/T338276ExploitIssue TrackingPatch

FAQ

What is CVE-2023-37303?

CVE-2023-37303 is a vulnerability with a CVSS score of 9.8 (CRITICAL). An issue was discovered in the CheckUser extension for MediaWiki through 1.39.3. In certain situations, an attempt to block a user fails after a temporary browser hang and a DBQueryDisconnectedError e...

How severe is CVE-2023-37303?

CVE-2023-37303 has been rated CRITICAL with a CVSS base score of 9.8/10. This is considered a critical vulnerability requiring immediate attention.

Is there a patch for CVE-2023-37303?

Check the references section above for vendor advisories and patch information. Affected products include: Mediawiki Mediawiki.