CVE-2023-5333

Denial of Service via multiple identical User IDs in /api/v4/users/ids

Description

Mattermost fails to deduplicate input IDs allowing a simple user to cause the application to consume excessive resources and possibly crash by sending a specially crafted request to /api/v4/users/ids with multiple identical IDs.

Remediation

Solution:

  • Update Mattermost Server to versions 7.8.11, 8.0.3, 8.1.2 or higher.

Category

4.3
CVSS
Severity: Medium
CVSS 3.1 •
EPSS 0.12%
Vendor Advisory mattermost.com
Affected: Mattermost Mattermost
Published at:
Updated at:

References

Link Tags
https://mattermost.com/security-updates vendor advisory

Frequently Asked Questions

What is the severity of CVE-2023-5333?
CVE-2023-5333 has been scored as a medium severity vulnerability.
How to fix CVE-2023-5333?
To fix CVE-2023-5333: Update Mattermost Server to versions 7.8.11, 8.0.3, 8.1.2 or higher.
Is CVE-2023-5333 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2023-5333 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2023-5333?
CVE-2023-5333 affects Mattermost Mattermost.
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