Main Vulnerability Database SB2020061969

SB2020061969 - Multiple vulnerabilities in Mattermost, Mattermost Server

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

Security Bulletin ID SB2020061969

CSH Severity

High

Patch available

YES

Number of vulnerabilities 2

Exploitation vector Remote access

Highest impact Code execution

Breakdown by Severity

Low
Medium
High
Critical

Description

This security bulletin contains information about 2 vulnerabilities.

1) Input validation error (CVE-ID: CVE-2018-21264)

CWE-ID: CWE-20 - Improper input validation

CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber

The vulnerability allows a remote authenticated user to execute arbitrary code.

An issue was discovered in Mattermost Server before 4.7.0, 4.6.2, and 4.5.2. It did not enforce the expiration date of a SAML response.

2) Improper Authentication (CVE-ID: CVE-2018-21263)

CWE-ID: CWE-287 - Improper Authentication

CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber

The vulnerability allows a remote authenticated user to execute arbitrary code.

An issue was discovered in Mattermost Server before 4.7.0, 4.6.2, and 4.5.2. An attacker could authenticate to a different user's account via a crafted SAML response.

Remediation

Install update from vendor's website.

References

https://mattermost.com/security-updates/