SB2020061928 - Improper Certificate Validation in Mattermost, Mattermost Server



SB2020061928 - Improper Certificate Validation in Mattermost, Mattermost Server

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

Security Bulletin ID SB2020061928
Severity
Medium
Patch available
YES
Number of vulnerabilities 1
Exploitation vector Remote access
Highest impact Data manipulation

Breakdown by Severity

Medium 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 1 security vulnerability.


1) Improper Certificate Validation (CVE-ID: CVE-2017-18918)

The vulnerability allows a remote privileged user to manipulate data.

An issue was discovered in Mattermost Server before 3.7.3 and 3.6.5. A System Administrator can place a SAML certificate at an arbitrary pathname.


Remediation

Install update from vendor's website.