SB2020061948 - Multiple vulnerabilities in Mattermost, Mattermost Server
Published: June 19, 2020 Updated: July 17, 2020
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 3 secuirty vulnerabilities.
1) SQL injection (CVE-ID: CVE-2019-20842)
The vulnerability allows a remote attacker to execute arbitrary SQL queries in database.
The vulnerability exists due to insufficient sanitization of user-supplied data. A remote attacker can send a specially crafted request to the affected application and execute arbitrary SQL commands within the application database.
Successful exploitation of this vulnerability may allow a remote attacker to read, delete, modify data in database and gain complete control over the affected application.
2) Improper Preservation of Permissions (CVE-ID: CVE-2019-20843)
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.
3) Improper Enforcement of Message Integrity During Transmission in a Communication Channel (CVE-ID: CVE-2019-20844)
The vulnerability allows a remote non-authenticated attacker to manipulate data.
An issue was discovered in Mattermost Server before 5.18.0, 5.17.2, 5.16.4, 5.15.4, and 5.9.7. An attacker can spoof a direct-message channel by changing the type of a channel.
Remediation
Install update from vendor's website.