CVE-2023-5876 Regex DoS from a malicious server enrolled in Desktop
An attacker controlling an enrolled server can cause a Denial of Service in Mattermost Desktop via malicious regex validation.
- 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-2023-5876?
CVE-2023-5876 is a low-severity denial of service vulnerability in Mattermost Desktop, published on 2 Nov 2023. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
Mattermost fails to properly validate a RegExp built off the server URL path, allowing an attacker in control of an enrolled server to mount a Denial Of Service.
Weakness: CWE-400
Which versions are affected by CVE-2023-5876?
It affects 1 product.
Products include Mattermost Mattermost Desktop.
How do I fix CVE-2023-5876?
No fix has been published for CVE-2023-5876 yet. Limit exposure of the affected software until one is available.
Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.
Is CVE-2023-5876 being exploited?
There is no known exploitation of CVE-2023-5876 in the wild and no public exploit code.
Other vulnerabilities in Mattermost Desktop
Sources
Also known as GHSA-p8hg-mm67-hmp8.