PT-2020-10852 · Mattermost · Mattermost Server

Published 2020-06-19 · Updated 2020-06-20 · CVE-2019-20888

Positive Technologies (AI Summary)

CVSS v3.1

7.5

High

Base vector

AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Name of the Vulnerable Software and Affected Versions Mattermost Server versions prior to 5.7 Mattermost Server version 5.6.3 and earlier Mattermost Server version 5.5.2 and earlier Mattermost Server version 4.10.5 and earlier

Description An issue in Mattermost Server allows attackers to cause a denial of service, specifically memory consumption, through either an outgoing webhook or a slash command integration.

Recommendations For versions prior to 5.7, update to version 5.7 or later. For version 5.6.3 and earlier, update to version 5.6.4 or later, or to version 5.7 or later. For version 5.5.2 and earlier, update to version 5.5.3 or later, or to version 5.7 or later. For version 4.10.5 and earlier, update to version 4.10.6 or later, or to version 5.7 or later.

Fix

DoS

Memory Leak

Weakness Enumeration

CWE-401

Related Identifiers

CVE-2019-20888

Affected Products

Mattermost Server

References · 3

• https://mattermost.com/security-updates · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2019-20888 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2019-20888 · Security Note