CVE-2020-27173 Denial of service in n/a
An attacker can cause host memory exhaustion via unlimited FIFO growth in vm-superio, impacting all VMs on the host.
- 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-2020-27173?
CVE-2020-27173 is a high-severity denial of service vulnerability in n/a, published on 16 Oct 2020. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
In vm-superio before 0.1.1, the serial console FIFO can grow to unlimited memory usage when data is sent to the input source (i.e., standard input). This behavior cannot be reproduced from the guest side. When no rate limiting is in place, the host can be subject to memory pressure, impacting all other VMs running on the same host.
Weakness: CWE-770
Which versions are affected by CVE-2020-27173?
It affects 1 product.
Products include Vm-Superio Project Vm-Superio.
How do I fix CVE-2020-27173?
No fix has been published for CVE-2020-27173 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-2020-27173 being exploited?
There is no known exploitation of CVE-2020-27173 in the wild and no public exploit code.
Sources
Also known as GHSA-9hcc-hc53-34f7.