Incorrect permission assignment for critical resource in Mattermost Server - CVE-2019-20887

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Main Vulnerability Database Vulnerabilities #VU30238

Incorrect permission assignment for critical resource in Mattermost Server - CVE-2019-20887

Published: June 19, 2020 / Updated: July 17, 2020


Vulnerability identifier: #VU30238
CSH Severity: Low
CVSSv4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2019-20887
CWE-ID: CWE-732
Exploitation vector: Remote access
Exploit availability: No public exploit available
Vulnerable software:
Mattermost Server
Software vendor:
Mattermost, Inc.

Description

The vulnerability allows a remote authenticated user to gain access to sensitive information.

An issue was discovered in Mattermost Server before 5.7.1, 5.6.4, 5.5.3, and 4.10.6. It does not honor flags API permissions when deciding whether a user can receive intra-team posts.


Remediation

Install update from vendor's website.

External links