CVE-2021-23270 Denial of service in n/a
An attacker can cause excessive network traffic and potential service disruption on Gargoyle OS devices by exploiting IPv6 routing loop conditions.
- 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-2021-23270?
CVE-2021-23270 is a high-severity denial of service vulnerability in n/a, published on 12 Apr 2021. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
In Gargoyle OS 1.12.0, when IPv6 is used, a routing loop can occur that generates excessive network traffic between an affected device and its upstream ISP's router. This occurs when a link prefix route points to a point-to-point link, a destination IPv6 address belongs to the prefix and is not a local IPv6 address, and a router advertisement is received with at least one global unique IPv6 prefix for which the on-link flag is set.
Weakness: CWE-834
Which versions are affected by CVE-2021-23270?
It affects 1 product.
Products include Gargoyle-Router Gargoyle.
How do I fix CVE-2021-23270?
No fix has been published for CVE-2021-23270 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-2021-23270 being exploited?
There is no known exploitation of CVE-2021-23270 in the wild and no public exploit code.
Other vulnerabilities in n/a
Sources
Also known as GHSA-wqw9-vmhv-jg2w.