PT-2020-8893 · Mattermost · Mattermost Server

Published 2020-06-19 · Updated 2020-06-29 · CVE-2018-21250

Positive Technologies (AI Summary)

CVSS v3.1

6.5

Medium

Base vector

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

Name of the Vulnerable Software and Affected Versions Mattermost Server versions prior to 5.2.2 Mattermost Server versions prior to 5.1.2 Mattermost Server versions prior to 4.10.4

Description The issue allows remote attackers to cause a denial of service, specifically memory consumption, via crafted image dimensions.

Recommendations For versions prior to 5.2.2, update to version 5.2.2 or later. For versions prior to 5.1.2, update to version 5.1.2 or later. For versions prior to 4.10.4, update to version 4.10.4 or later.

Fix

DoS

Resource Exhaustion

Weakness Enumeration

CWE-400

Related Identifiers

CVE-2018-21250

Affected Products

Mattermost Server

References · 4

• https://osv.dev/vulnerability/CVE-2018-21250 · Vendor Advisory
• https://mattermost.com/security-updates · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2018-21250 · Security Note
• https://t.me/cibsecurity/12900 · Telegram Post