CVE-2020-16843

MEDIUM

Firecracker 0.20.x-0.20.1 and 0.21.x-0.21.2 - Denial of Service via Network Stack Freeze

Title source: llm
STIX 2.1

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.

References (3)

Core 3
Core References
Mitigation, Third Party Advisory x_refsource_misc
https://github.com/firecracker-microvm/firecracker/issues/2057
Mailing List, Third Party Advisory x_refsource_misc
https://www.openwall.com/lists/oss-security/2020/08/13/1
Mailing List, Third Party Advisory mailing-list x_refsource_mlist
http://www.openwall.com/lists/oss-security/2020/08/13/1

Scores

CVSS v3 5.9
EPSS 0.0050
EPSS Percentile 66.0%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H

Details

Status published
Products (3)
amazon/firecracker 0.20.0
amazon/firecracker 0.21.0
amazon/firecracker 0.21.1
Published Aug 04, 2020
Tracked Since Feb 18, 2026