CVE-2024-39361 Creating posts with user-defined IDs permitted in CreatePost API
Attackers can create posts with user-defined IDs, causing broken functionality in channels or threads within the Mattermost chat platform.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2024-39361?
CVE-2024-39361 is a low-severity vulnerability in Mattermost Mattermost, published on 3 Jul 2024. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
Mattermost versions 9.8.0, 9.7.x <= 9.7.4, 9.6.x <= 9.6.2 and 9.5.x <= 9.5.5 fail to prevent users from specifying a RemoteId for their posts which allows an attacker to specify both a remoteId and the post ID, resulting in creating a post with a user-defined post ID. This can cause some broken functionality in the channel or thread with user-defined posts
Weakness: CWE-284
Which versions are affected by CVE-2024-39361?
It affects 1 product.
Products include Mattermost Mattermost.
How do I fix CVE-2024-39361?
No fix has been published for CVE-2024-39361 yet. Limit exposure of the affected software until one is available.
Is CVE-2024-39361 being exploited?
There is no known exploitation of CVE-2024-39361 in the wild and no public exploit code.
Other vulnerabilities in Mattermost Mattermost
- CVE-2019-20851 Path traversal in n/a
- CVE-2024-39274 Malicious remote can add users to arbitrary teams and channels
- CVE-2024-39777 Malicious remote can invite itself to an arbitrary local channel
- CVE-2024-39830 Timing attack during remote cluster token comparison when shared channels are enabled
- CVE-2023-3615 Lack of server certificate validation in websockets connection
Sources
Also known as GHSA-76jf-55hx-4969.