CVE-2020-27174 Denial of service in n/a
An attacker can cause a memory leak in the Firecracker microVM emulator by sending data to the serial console, potentially exhausting host memory.
- 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-2020-27174?
CVE-2020-27174 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 Amazon AWS Firecracker before 0.21.3, and 0.22.x before 0.22.1, the serial console buffer can grow its memory usage without limit when data is sent to the standard input. This can result in a memory leak on the microVM emulation thread, possibly occupying more memory than intended on the host.
Weakness: CWE-401
Which versions are affected by CVE-2020-27174?
It affects 1 product.
Products include Amazon Firecracker.
How do I fix CVE-2020-27174?
No fix has been published for CVE-2020-27174 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-2020-27174 being exploited?
There is no known exploitation of CVE-2020-27174 in the wild and no public exploit code.
Other vulnerabilities in n/a
Sources
Also known as GHSA-w7c8-xhpc-x95j.