CVE-2023-2792 Ephemeral messages return private channel contents in permalink previews
Attackers can leak private channel contents via crafted ephemeral error messages in Mattermost, requiring a patch to prevent unauthorized data access.
- 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-2023-2792?
CVE-2023-2792 is a medium-severity vulnerability in Mattermost Mattermost, published on 16 Jun 2023. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
Mattermost fails to sanitize ephemeral error messages, allowing an attacker to obtain arbitrary message contents by a specially crafted /groupmsg command.
Weakness: CWE-200
Which versions are affected by CVE-2023-2792?
It affects 1 product.
Products include Mattermost Mattermost.
How do I fix CVE-2023-2792?
No fix has been published for CVE-2023-2792 yet. Limit exposure of the affected software until one is available.
Is CVE-2023-2792 being exploited?
There is no known exploitation of CVE-2023-2792 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-9v8g-3666-2499.