Incorrect permission assignment for critical resource in Mattermost Server - CVE-2019-20883

 

Incorrect permission assignment for critical resource in Mattermost Server - CVE-2019-20883

Published: June 19, 2020 / Updated: August 8, 2020


Vulnerability identifier: #VU34224
CSH Severity: Low
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2019-20883
CWE-ID: CWE-732
Exploitation vector: Remote access
Exploit availability: No public exploit available
Vendor: Mattermost, Inc.
Affected software:
Mattermost Server

Detailed vulnerability description

The vulnerability allows a remote authenticated user to manipulate data.

An issue was discovered in Mattermost Server before 5.8.0, when Town Square is set to Read-Only. Users can pin or unpin a post.


How to mitigate CVE-2019-20883

Install update from vendor's website.

Sources