CVE-2024-34029: AD/LDAP Group Members Leak
Mattermost versions 9.5.x <= 9.5.3, 9.7.x <= 9.7.1 and 8.1.x <= 8.1.12 fail to perform a proper authorization check in the /api/v4/groups/<group-id>/channels/<channel-id>/link endpoint which allows a user to learn the members of an AD/LDAP group that is linked to a team by adding the group to a channel, even if the user has no access to the team.
Affected Software
Remediation
Information
Event History
Frequently Asked Questions
What is the severity of CVE-2024-34029?
CVE-2024-34029 is considered a high-severity vulnerability due to improper authorization checks that can expose sensitive group member information.
How do I fix CVE-2024-34029?
To fix CVE-2024-34029, upgrade Mattermost to version 9.5.4 or later, 9.7.2 or later, or 8.1.13 or later.
Which versions of Mattermost are affected by CVE-2024-34029?
Mattermost versions 9.5.x up to 9.5.3, 9.7.x up to 9.7.1, and 8.1.x up to 8.1.12 are affected by CVE-2024-34029.
What type of information can be exposed by CVE-2024-34029?
CVE-2024-34029 can allow unauthorized users to learn the members of an Active Directory or LDAP group linked to a team.
Who is at risk for CVE-2024-34029?
Organizations using vulnerable versions of Mattermost are at risk for CVE-2024-34029, especially those managing sensitive group information.