CVE-2020-16843 Denial of service in n/a
Heavy ingress traffic can freeze the network stack, causing a denial of service in Firecracker microVMs.
- 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-2020-16843?
CVE-2020-16843 is a medium-severity denial of service vulnerability in n/a, published on 4 Aug 2020. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
In Firecracker 0.20.x before 0.20.1 and 0.21.x before 0.21.2, the network stack can freeze under heavy ingress traffic. This can result in a denial of service on the microVM when it is configured with a single network interface, and an availability problem for the microVM network interface on which the issue is triggered.
Which versions are affected by CVE-2020-16843?
It affects 1 product.
Products include Amazon Firecracker.
How do I fix CVE-2020-16843?
No fix has been published for CVE-2020-16843 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-2020-16843 being exploited?
There is no known exploitation of CVE-2020-16843 in the wild and no public exploit code.
Other vulnerabilities in n/a
Sources
Also known as GHSA-mq2v-3xvx-978w.