PT-2020-8460 · Mattermost · Mattermost Server

Published 2020-06-19 · Updated 2020-06-25 · CVE-2017-18914

Positive Technologies (AI Summary)

CVSS v3.1

5.3

Medium

Base vector

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

Name of the Vulnerable Software and Affected Versions: Mattermost Server versions prior to 3.8.2 Mattermost Server versions prior to 3.7.5 Mattermost Server versions prior to 3.6.7

Description: An issue was discovered where an external link can occur on an error page even if it is not on an allowlist.

Recommendations: For versions prior to 3.8.2, update to version 3.8.2 or later to resolve the issue. For versions prior to 3.7.5, update to version 3.7.5 or later to resolve the issue. For versions prior to 3.6.7, update to version 3.6.7 or later to resolve the issue.

Fix

Improper Check for Exceptional Conditions

Weakness Enumeration

CWE-754

Related Identifiers

CVE-2017-18914

Affected Products

Mattermost Server

References · 4

• https://mattermost.com/security-updates · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2017-18914 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2017-18914 · Security Note
• https://t.me/cvenotify/4535 · Telegram Post