PT-2020-10818 · Mattermost · Mattermost Server

Published 2020-06-19 · Updated 2021-07-21 · CVE-2019-20855

Positive Technologies (AI Summary)

CVSS v3.1

7.5

High

Base vector

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

Name of the Vulnerable Software and Affected Versions Mattermost Server versions prior to 5.16.1 Mattermost Server versions prior to 5.15.2 Mattermost Server versions prior to 5.14.5 Mattermost Server versions prior to 5.9.6

Description The issue allows attackers to obtain sensitive information, specifically local files, during the legacy attachment migration process.

Recommendations For versions prior to 5.16.1, update to version 5.16.1 or later. For versions prior to 5.15.2, update to version 5.15.2 or later. For versions prior to 5.14.5, update to version 5.14.5 or later. For versions prior to 5.9.6, update to version 5.9.6 or later.

Fix

Related Identifiers

CVE-2019-20855

Affected Products

Mattermost Server

References · 3

• https://mattermost.com/security-updates · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2019-20855 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2019-20855 · Security Note