CVE-2021-31702 Denial of service in n/a
An attacker can cause a denial of service in Frontier ichris by sending repeated DNS requests via the HTTP Host header.
- 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-2021-31702?
CVE-2021-31702 is a high-severity denial of service vulnerability in n/a, published on 29 May 2021. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
Frontier ichris through 5.18 mishandles making a DNS request for the hostname in the HTTP Host header, as demonstrated by submitting 127.0.0.1 multiple times for DoS.
Which versions are affected by CVE-2021-31702?
It affects 1 product.
Products include Frontiersoftware Ichris.
How do I fix CVE-2021-31702?
No fix has been published for CVE-2021-31702 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-2021-31702 being exploited?
There is no known exploitation of CVE-2021-31702 in the wild and no public exploit code.
Other vulnerabilities in n/a
Sources
Also known as GHSA-vv38-xhh2-74q7.