CVE-2023-45367

Public Exploit

Description

An issue was discovered in the CheckUser extension for MediaWiki before 1.35.12, 1.36.x through 1.39.x before 1.39.5, and 1.40.x before 1.40.1. A user can use a rest.php/checkuser/v0/useragent-clienthints/revision/ URL to store an arbitrary number of rows in cu_useragent_clienthints, leading to a denial of service.

6.5

CVSS

Severity: Medium

CVSS 3.1 •

EPSS 0.14%

Vendor Advisory wikimedia.org

Affected: n/a n/a

References

Link	Tags
https://phabricator.wikimedia.org/T344923	vendor advisory issue tracking exploit

Frequently Asked Questions

What is the severity of CVE-2023-45367?: CVE-2023-45367 has been scored as a medium severity vulnerability.
How to fix CVE-2023-45367?: To fix CVE-2023-45367, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2023-45367 being actively exploited in the wild?: It is possible that CVE-2023-45367 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.

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