Vulnerability Details : CVE-2020-16843
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.
Vulnerability category: Denial of service
Products affected by CVE-2020-16843
- cpe:2.3:a:amazon:firecracker:0.20.0:*:*:*:*:*:*:*
- cpe:2.3:a:amazon:firecracker:0.21.0:*:*:*:*:*:*:*
- cpe:2.3:a:amazon:firecracker:0.21.1:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2020-16843
0.38%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 57 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2020-16843
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
4.3
|
MEDIUM | AV:N/AC:M/Au:N/C:N/I:N/A:P |
8.6
|
2.9
|
NIST | |
|
5.9
|
MEDIUM | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H |
2.2
|
3.6
|
NIST |
References for CVE-2020-16843
-
http://www.openwall.com/lists/oss-security/2020/08/13/1
oss-security - CVE-2020-16843: Firecracker v0.20.0, v0.21.0 and v0.21.1 network stack can freeze under heavy ingress trafficMailing List;Third Party Advisory
-
https://github.com/firecracker-microvm/firecracker/issues/2057
Firecracker v0.20.0, v0.21.0 and v0.21.1 network stack can freeze under heavy ingress traffic · Issue #2057 · firecracker-microvm/firecracker · GitHubMitigation;Third Party Advisory
-
https://www.openwall.com/lists/oss-security/2020/08/13/1
oss-security - CVE-2020-16843: Firecracker v0.20.0, v0.21.0 and v0.21.1 network stack can freeze under heavy ingress trafficMailing List;Third Party Advisory
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