SB2020061939 - Multiple vulnerabilities in Mattermost, Mattermost Server

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Main Vulnerability Database SB2020061939

SB2020061939 - Multiple vulnerabilities in Mattermost, Mattermost Server

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

Security Bulletin ID SB2020061939
Severity
Low
Patch available
YES
Number of vulnerabilities 2
Exploitation vector Remote access
Highest impact Data manipulation

Breakdown by Severity

Low 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 2 secuirty vulnerabilities.


1) Information disclosure (CVE-ID: CVE-2018-21260)

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

An issue was discovered in Mattermost Server before 4.8.1, 4.7.4, and 4.6.3. WebSocket events were accidentally sent during certain user-management operations, violating user privacy.


2) Incorrect permission assignment for critical resource (CVE-ID: CVE-2018-21261)

The vulnerability allows a remote authenticated user to manipulate data.

An issue was discovered in Mattermost Server before 4.8.1, 4.7.4, and 4.6.3. An e-mail invite accidentally included the team invite_id, which leads to unintended excessive invitation privileges.


Remediation

Install update from vendor's website.

References