8.8
CWE
863
Advisory Published
Advisory Published
Updated

CVE-2023-2515: Privilege escalation to system admin via personal access tokens

First published: Fri May 12 2023(Updated: )

Mattermost fails to restrict a user with permissions to edit other users and to create personal access tokens from elevating their privileges to system admin

Credit: responsibledisclosure@mattermost.com responsibledisclosure@mattermost.com

Affected SoftwareAffected VersionHow to fix
Mattermost Mattermost Server<7.1.8
Mattermost Mattermost Server>=7.2.0<7.7.4
Mattermost Mattermost Server>=7.8.0<7.8.3
Mattermost Mattermost Server>=7.9.0<7.9.2
go/github.com/mattermost/mattermost-server/v6>=7.9.0<7.9.2
7.9.2
go/github.com/mattermost/mattermost-server/v6>=7.8.0<7.8.3
7.8.3
go/github.com/mattermost/mattermost-server/v6>=7.2.0<7.7.4
7.7.4
go/github.com/mattermost/mattermost-server/v6<7.1.8
7.1.8

Remedy

Update Mattermost Server to versions 7.1.8, 7.7.4, 7.8.3, 7.9.2 or higher.

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Frequently Asked Questions

  • What is CVE-2023-2515?

    CVE-2023-2515 is a vulnerability in Mattermost that allows a user with certain permissions to escalate their privileges to system admin.

  • How does Mattermost restrict user privileges in this vulnerability?

    Mattermost fails to restrict a user with permissions to edit other users and create personal access tokens from elevating their privileges to system admin.

  • Which versions of Mattermost are affected by CVE-2023-2515?

    The following versions of Mattermost are affected: 7.1.8, 7.2.0 to 7.7.4, 7.8.0 to 7.8.3, and 7.9.0 to 7.9.2.

  • What is the severity of CVE-2023-2515?

    CVE-2023-2515 has a severity rating of 8.8 (high).

  • How can I fix CVE-2023-2515?

    To fix CVE-2023-2515, upgrade Mattermost to a version that is not affected by the vulnerability.

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