CVE-2021-42084 Denial of service in n/a
An authenticated agent can trigger an endless loop via crafted requests, causing a denial of service in Zammad.
- 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-2021-42084?
CVE-2021-42084 is a medium-severity denial of service vulnerability in Zammad Zammad, published on 7 Oct 2021. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
An issue was discovered in Zammad before 4.1.1. An attacker with valid agent credentials may send a series of crafted requests that cause an endless loop and thus cause denial of service.
Weakness: CWE-835
Which versions are affected by CVE-2021-42084?
It affects 1 product.
Products include Zammad Zammad.
How do I fix CVE-2021-42084?
No fix has been published for CVE-2021-42084 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-2021-42084 being exploited?
There is no known exploitation of CVE-2021-42084 in the wild and no public exploit code.
Other vulnerabilities in Zammad Zammad
Sources
Also known as GHSA-2wm3-m74f-6p2x.