CVE-2020-16843

MediumCVSS 5.9/10Last modified Jun 17, 2026

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.

Metrics

CVSS 3.1 5.9/10CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H

Affected software

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

References

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

Timeline

Published: Aug 4, 2020
Last modified: Jun 17, 2026
NVD status: Modified

Related CVEs from 2020

CVE-2020-168446.8In Istio 1.5.0 though 1.5.8 and Istio 1.6.0 through 1.6.7, when users specify an AuthorizationPolicy resource with DENY actions using wildca CVE-2020-168457.5Go before 1.13.15 and 14.x before 1.14.7 can have an infinite read loop in ReadUvarint and ReadVarint in encoding/binary via invalid inputs.CVE-2020-168469.8An issue was discovered in SaltStack Salt through 3002. Sending crafted web requests to the Salt API, with the SSH client enabled, can resul CVE-2020-168476.1Extreme Analytics in Extreme Management Center before 8.5.0.169 allows unauthenticated reflected XSS via a parameter in a GET request, aka C CVE-2020-168497.5An issue was discovered on Canon MF237w 06.07 devices. An "Improper Handling of Length Parameter Inconsistency" issue in the IPv4/ICMPv4 com CVE-2020-16855.8When configuring stateless firewall filters in Juniper Networks EX4600 and QFX 5000 Series devices using Virtual Extensible LAN protocol (VX CVE-2020-168507.5Mitsubishi MELSEC iQ-R Series PLCs with firmware 49 allow an unauthenticated attacker to halt the industrial process by sending a crafted pa CVE-2020-168517.1An elevation of privilege vulnerability exists when the OneDrive for Windows Desktop application improperly handles symbolic links. An at CVE-2020-168527.1An elevation of privilege vulnerability exists when the OneDrive for Windows Desktop application improperly handles symbolic links. An at CVE-2020-168537.1An elevation of privilege vulnerability exists when the OneDrive for Windows Desktop application improperly handles symbolic links. An at CVE-2020-168545.5An information disclosure vulnerability exists when the Windows kernel improperly handles objects in memory. An attacker who successfully CVE-2020-168555.5An information disclosure vulnerability exists when Microsoft Office software reads out of bound memory due to an uninitialized variable,