Vulnerability 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.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Amazon | Firecracker | 0.20.0 |
References
- http://www.openwall.com/lists/oss-security/2020/08/13/1Mailing ListThird Party Advisory
- https://github.com/firecracker-microvm/firecracker/issues/2057MitigationThird Party Advisory
- https://www.openwall.com/lists/oss-security/2020/08/13/1Mailing ListThird Party Advisory
- http://www.openwall.com/lists/oss-security/2020/08/13/1Mailing ListThird Party Advisory
- https://github.com/firecracker-microvm/firecracker/issues/2057MitigationThird Party Advisory
- https://www.openwall.com/lists/oss-security/2020/08/13/1Mailing ListThird Party Advisory
FAQ
What is CVE-2020-16843?
CVE-2020-16843 is a vulnerability with a CVSS score of 5.9 (MEDIUM). 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...
How severe is CVE-2020-16843?
CVE-2020-16843 has been rated MEDIUM with a CVSS base score of 5.9/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2020-16843?
Check the references section above for vendor advisories and patch information. Affected products include: Amazon Firecracker.