Improper Access Control Affecting github.com/mattermost/mattermost-server/v6 package, versions <7.8.13


Severity

Recommended
0.0
medium
0
10

CVSS assessment made by Snyk's Security Team

    Threat Intelligence

    EPSS
    0.05% (15th percentile)

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  • Snyk ID SNYK-GOLANG-GITHUBCOMMATTERMOSTMATTERMOSTSERVERV6-6094999
  • published 29 Nov 2023
  • disclosed 27 Nov 2023
  • credit Unknown

How to fix?

Upgrade github.com/mattermost/mattermost-server/v6 to version 7.8.13 or higher.

Overview

github.com/mattermost/mattermost-server/v6 is an open source, private cloud, Slack-alternative.

Affected versions of this package are vulnerable to Improper Access Control due to the lack of proper access control checks. An attacker can override the username and icon when making a post, even if the Hardened Mode setting is enabled, by exploiting the settings that allow integrations to override the username and profile picture when posting. This is only exploitable if the settings allow integrations to override the username and profile picture when posting.

CVSS Scores

version 3.1
Expand this section

Snyk

Recommended
4.3 medium
  • Attack Vector (AV)
    Network
  • Attack Complexity (AC)
    Low
  • Privileges Required (PR)
    Low
  • User Interaction (UI)
    None
  • Scope (S)
    Unchanged
  • Confidentiality (C)
    None
  • Integrity (I)
    Low
  • Availability (A)
    None
Expand this section

NVD

4.3 medium