PT-2020-7994 · Mattermost · Mattermost Server

Published 2020-06-19 · Updated 2020-06-26 · CVE-2016-11065

Positive Technologies (AI Summary)

CVSS v3.1

4.3

Medium

Base vector

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

Name of the Vulnerable Software and Affected Versions: Mattermost Server versions prior to 3.3.0

Description: An issue was discovered that allows an attacker to use the WebSocket feature to send pop-up messages to users or change a post's appearance.

Recommendations: For versions prior to 3.3.0, update to version 3.3.0 or later to resolve the issue. As a temporary workaround, consider disabling the WebSocket feature until a patch is available. Restrict access to the WebSocket endpoint to minimize the risk of exploitation. Avoid using the WebSocket feature in the affected API endpoint until the issue is resolved.

Fix

Incorrect Permission

Weakness Enumeration

CWE-732

Related Identifiers

CVE-2016-11065

Affected Products

Mattermost Server

References · 4

• https://mattermost.com/security-updates · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2016-11065 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2016-11065 · Security Note
• https://t.me/cibsecurity/12954 · Telegram Post