Vulnerability · Published Aug 4, 2020 · Assigned by mitre

CVE-2020-16843

Medium 5.9

In plain English

A medium-severity security flaw in the affected software. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 1.7% (higher than 77% of all known vulnerabilities).

Severity (CVSS NVD)5.9Medium

Exploit odds (30 days)1.7%top 23.1% of all CVEs

Exploited in the wildNo reportsnot in CISA KEV

Attack toolingNoneno public tooling known

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.

Affected products (as reported)

Vendor	Product	Versions
n/a	n/a	n/a

References

https://github.com/firecracker-microvm/firecracker/issues/2057 x_refsource_MISC
https://www.openwall.com/lists/oss-security/2020/08/13/1 x_refsource_MISC
[oss-security] 20200813 CVE-2020-16843: Firecracker v0.20.0, v0.21.0 and v0.21.1 network stack can freeze under heavy ingress traffic mailing-list, x_refsource_MLIST