CVE-2020-10101 Denial of service in n/a
An attacker can crash the Zammad WebSocket server by sending non-JSON messages, causing a denial of service.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2020-10101?
CVE-2020-10101 is a high-severity denial of service vulnerability in Zammad Zammad, published on 5 Mar 2020. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
An issue was discovered in Zammad 3.0 through 3.2. The WebSocket server crashes when messages in non-JSON format are sent by an attacker. The message format is not properly checked and parsing errors not handled. This leads to a crash of the service process.
Which versions are affected by CVE-2020-10101?
It affects 1 product.
Products include Zammad Zammad.
How do I fix CVE-2020-10101?
No fix has been published for CVE-2020-10101 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-2020-10101 being exploited?
There is no known exploitation of CVE-2020-10101 in the wild and no public exploit code.
Other vulnerabilities in Zammad Zammad
Sources
Also known as GHSA-85q9-82qf-837m.