CVE-2024-42000: Unauthorized Access to view channels' details
First published: Sat Nov 09 2024(Updated: )
Mattermost versions 9.10.x <= 9.10.2, 9.11.x <= 9.11.1, 9.5.x <= 9.5.9 and 10.0.x <= 10.0.0 fail to properly authorize the requests to /api/v4/channels which allows a User or System Manager, with "Read Groups" permission but with no access for channels to retrieve details about private channels that they were not a member of by sending a request to /api/v4/channels.
Credit: responsibledisclosure@mattermost.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Mattermost | >=9.5.0<9.5.10 | |
| Mattermost | >=9.10.0<9.10.3 | |
| Mattermost | >=9.11.0<9.11.2 | |
| Mattermost | =10.0.0 | |
| Mattermost | =10.0.0-rc1 | |
| Mattermost | =10.0.0-rc2 | |
| Mattermost | =10.0.0-rc3 | |
| Mattermost | =10.0.0-rc4 |
Remedy
Update Mattermost to versions 10.1.0, 9.10.3, 9.11.2, 9.5.10, 10.0.1 or higher.
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Reference Links
Frequently Asked Questions
What is the severity of CVE-2024-42000?
The severity of CVE-2024-42000 is high due to improper authorization allowing unauthorized access to private channel details.
How do I fix CVE-2024-42000?
To fix CVE-2024-42000, update Mattermost servers to versions 9.10.3, 9.11.2, or 10.0.1 or later.
Which versions of Mattermost are affected by CVE-2024-42000?
CVE-2024-42000 affects Mattermost versions 9.10.x up to 9.10.2, 9.11.x up to 9.11.1, 9.5.x up to 9.5.9, and 10.0.0.
What type of authentication issue does CVE-2024-42000 represent?
CVE-2024-42000 is an authentication issue that allows users with limited permissions to access information they should not be able to see.
Can only system managers exploit CVE-2024-42000?
No, any user with 'Read Groups' permission can exploit CVE-2024-42000, regardless of their access to channels.
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- collector/nvd-api
- source/NVD
- agent/software-canonical-lookup
- agent/software-canonical-lookup-request
- vendor/mattermost
- canonical/mattermost
- version/mattermost/9.5.0
- version/mattermost/9.10.0
- version/mattermost/9.11.0
- version/mattermost/10.0.0
- version/mattermost/10.0.0-rc1
- version/mattermost/10.0.0-rc2
- version/mattermost/10.0.0-rc3
- version/mattermost/10.0.0-rc4