Race condition in Mattermost Server - #VU51610
Published: March 22, 2021
Vulnerability identifier: #VU51610
CSH Severity: Medium
CVSS v4: 6.7 [CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]
CVE-ID: N/A
CWE-ID: CWE-362
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to improper handling of WebSockets closing. A remote attacker can exploit the race and cause a denial of service condition on the system.
Affected software
Mattermost Server
Remediation
Install updates from vendor's website.
Mattermost Server - update to 5.33.1