CVE-2024-21848: Users maintain access to active call after being removed from a channel
First published: Fri Apr 05 2024(Updated: )
Improper Access Control in Mattermost Server versions 8.1.x before 8.1.11 allows an attacker that is in a channel with an active call to keep participating in the call even if they are removed from the channel
Credit: responsibledisclosure@mattermost.com responsibledisclosure@mattermost.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| go/github.com/mattermost/mattermost/server/v8 | <8.1.11 | 8.1.11 |
| Mattermost | >=8.1.0<8.1.11 |
Remedy
Update Mattermost Server to versions 9.5.0, 8.1.11 or higher.
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Reference Links
Frequently Asked Questions
What is the severity of CVE-2024-21848?
CVE-2024-21848 has a moderate severity due to the improper access control affecting active call participation.
How do I fix CVE-2024-21848?
To fix CVE-2024-21848, upgrade Mattermost Server to version 8.1.11 or later.
What versions are affected by CVE-2024-21848?
CVE-2024-21848 affects Mattermost Server versions 8.1.0 to 8.1.10.
What is the impact of CVE-2024-21848?
The impact of CVE-2024-21848 allows an attacker to remain in an active call after being removed from the channel.
Is there a workaround for CVE-2024-21848?
No specific workaround is recommended; updating to the latest version is the best solution.
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