How does CVE-2023-2791 affect Mattermost?

CVE-2023-2791 affects Mattermost versions 7.7.0 to 7.7.3, 7.8.0 to 7.8.2, 7.9.0 to 7.9.1, and 7.10.0.

What is the severity of CVE-2023-2791?

CVE-2023-2791 has a severity rating of medium (4.3).

How can an attacker exploit CVE-2023-2791?

An attacker can exploit CVE-2023-2791 by creating a malicious playbook run via the /dialog API and gaining access to edit arbitrary channel posts.

Is there a fix for CVE-2023-2791?

Yes, Mattermost has released security updates to address CVE-2023-2791. It is recommended to upgrade to the latest version to mitigate the vulnerability.

Vulnerability/
CVE-2023-2791

medium

4.3

CWE

862

16/6/2023

2/8/2024

CVE-2023-2791: Playbooks lets you edit arbitrary posts

Q: What is CVE-2023-2791?

CVE-2023-2791 is a vulnerability in Mattermost that allows an authenticated attacker to edit an arbitrary channel post when creating a playbook run via the /dialog API.

First published: Fri Jun 16 2023(Updated: )

When creating a playbook run via the /dialog API, Mattermost fails to validate all parameters, allowing an authenticated attacker to edit an arbitrary channel post.

Credit: responsibledisclosure@mattermost.com

Affected Software	Affected Version	How to fix
Mattermost Mattermost	>=7.7.0<=7.7.3
Mattermost Mattermost	>=7.8.0<=7.8.2
Mattermost Mattermost	>=7.9.0<=7.9.1
Mattermost Mattermost	=7.10.0

Remedy

Update Mattermost to version v7.7.4, v7.8.3, v7.9.2, v7.10.1, or higher.

Never miss a vulnerability like this again

Reference Links

https://mattermost.com/security-updates/

Frequently Asked Questions

What is CVE-2023-2791?
CVE-2023-2791 is a vulnerability in Mattermost that allows an authenticated attacker to edit an arbitrary channel post when creating a playbook run via the /dialog API.
How does CVE-2023-2791 affect Mattermost?
CVE-2023-2791 affects Mattermost versions 7.7.0 to 7.7.3, 7.8.0 to 7.8.2, 7.9.0 to 7.9.1, and 7.10.0.
What is the severity of CVE-2023-2791?
CVE-2023-2791 has a severity rating of medium (4.3).
How can an attacker exploit CVE-2023-2791?
An attacker can exploit CVE-2023-2791 by creating a malicious playbook run via the /dialog API and gaining access to edit arbitrary channel posts.
Is there a fix for CVE-2023-2791?
Yes, Mattermost has released security updates to address CVE-2023-2791. It is recommended to upgrade to the latest version to mitigate the vulnerability.

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vendor/mattermost
canonical/mattermost mattermost
version/mattermost mattermost/7.7.0
version/mattermost mattermost/7.7.3
version/mattermost mattermost/7.8.0
version/mattermost mattermost/7.8.2
version/mattermost mattermost/7.9.0
version/mattermost mattermost/7.9.1
version/mattermost mattermost/7.10.0

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