PT-2020-10834 · Mattermost · Mattermost Server

Published 2020-06-19 · Updated 2020-06-23 · CVE-2019-20871

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 5.9.0 Mattermost Server versions prior to 5.8.1 Mattermost Server versions prior to 5.7.3 Mattermost Server versions prior to 4.10.8

Description An issue was discovered in the Markdown library, which allows catastrophic backtracking.

Recommendations For versions prior to 5.9.0, update to version 5.9.0 or later. For versions prior to 5.8.1, update to version 5.8.1 or later. For versions prior to 5.7.3, update to version 5.7.3 or later. For versions prior to 4.10.8, update to version 4.10.8 or later.

Fix

Related Identifiers

CVE-2019-20871

Affected Products

Mattermost Server

References · 3

• https://nvd.nist.gov/vuln/detail/CVE-2019-20871 · Security Note
• https://mattermost.com/security-updates · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2019-20871 · Vendor Advisory