PT-2020-10829 · Mattermost · Mattermost Server

Published 2020-06-19 · Updated 2020-06-29 · CVE-2019-20866

Positive Technologies (AI Summary)

CVSS v3.1

5.3

Medium

Base vector

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

Name of the Vulnerable Software and Affected Versions Mattermost Server versions prior to 5.12.0

Description An issue was discovered where the use of a Proxy HTTP header for obtaining IP address information was mishandled, rather than using the source address in an IP packet header.

Recommendations For versions prior to 5.12.0, update to version 5.12.0 or later to resolve the issue.

Fix

HTTP Request/Response Smuggling

Weakness Enumeration

CWE-444

Related Identifiers

CVE-2019-20866

Affected Products

Mattermost Server

References · 3

• https://mattermost.com/security-updates · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2019-20866 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2019-20866 · Security Note