Resource exhaustion in Mattermost Server - CVE-2019-20858

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Main Vulnerability Database Vulnerabilities #VU34238

Resource exhaustion in Mattermost Server - CVE-2019-20858

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


Vulnerability identifier: #VU34238
CSH Severity: Medium
CVSSv4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2019-20858
CWE-ID: CWE-400
Exploitation vector: Remote access
Exploit availability: No public exploit available
Vulnerable software:
Mattermost Server
Software vendor:
Mattermost, Inc.

Description

The vulnerability allows a remote non-authenticated attacker to perform a denial of service (DoS) attack.

An issue was discovered in Mattermost Server before 5.15.0. It allows attackers to cause a denial of service (CPU consumption) via crafted characters in a SQL LIKE clause to an APIv4 endpoint.


Remediation

Install update from vendor's website.

External links