Missing Authorization in Mattermost Server - CVE-2020-14457
Published: July 2, 2020
Vulnerability identifier: #VU29475
CSH Severity: Medium
CVSS v4: 6.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2020-14457
CWE-ID: CWE-862
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to gain access to sensitive information on the target system.
The vulnerability exists due to missing authorization in the "update_team" WebSocket event. A remote attacker can receive broadcasted team details.
Affected software
Mattermost Server
How to mitigate CVE-2020-14457
Install updates from vendor's website.
Mattermost Server - update to 5.20