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CVE-2020-16843

MEDIUM
5.9
CVSS Score
Published: August 4, 2020 at 07:39 PM UTC
Updated: June 17, 2026 at 02:58 AM UTC
1 product affected across 1 vendorFirecracker

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Severity
MEDIUM5.9
Exploit prediction
EPSS 2%

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

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

References (3)

Mailing Listx_refsource_MLISTThird Party Advisory
Source: [email protected]
http://www.openwall.com/lists/oss-security/2020/08/13/1
x_refsource_MISCMitigationThird Party Advisory
Source: [email protected]
https://github.com/firecracker-microvm/firecracker/issues/2057
x_refsource_MISCMailing ListThird Party Advisory
Source: [email protected]
https://www.openwall.com/lists/oss-security/2020/08/13/1

CVSS

5.9MEDIUM[email protected]
Attack Vector
NETWORK
Complexity
HIGH
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
HIGH
Vector?

Quick Info

StatusMODIFIED
CWE
NVD-CWE-noinfo

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