Improper Preservation of Permissions in Mattermost Server - CVE-2019-20843
Published: June 19, 2020 / Updated: July 17, 2020
Vulnerability identifier: #VU30250
CSH Severity: Medium
CVSS v4: 8.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2019-20843
CWE-ID:
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote non-authenticated attacker to gain access to sensitive information.
An issue was discovered in Mattermost Server before 5.18.0, 5.17.2, 5.16.4, 5.15.4, and 5.9.7. There are weak permissions for configuration files.
Affected software
Mattermost Server
How to mitigate CVE-2019-20843
Install update from vendor's website.
Mattermost Server - update to 5.17.2