CVE-2023-5967

Denial of Service via crashing the Calls Plugin

Description

Mattermost fails to properly validate requests to the Calls plugin, allowing an attacker sending a request without a User Agent header to cause a panic and crash the Calls plugin

Remediation

Solution:

  •  Update Mattermost Server to versions 7.8.12, 8.0.4, 8.1.3 or higher. Alternatively, upgrade the Calls plugin to 0.17.1 or higher. 

Category

4.3
CVSS
Severity: Medium
CVSS 3.1 •
EPSS 0.10%
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-2023-5967?
CVE-2023-5967 has been scored as a medium severity vulnerability.
How to fix CVE-2023-5967?
To fix CVE-2023-5967:  Update Mattermost Server to versions 7.8.12, 8.0.4, 8.1.3 or higher. Alternatively, upgrade the Calls plugin to 0.17.1 or higher. 
Is CVE-2023-5967 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2023-5967 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-2023-5967?
CVE-2023-5967 affects Mattermost Mattermost.
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