CVE-2020-27174

Description

In Amazon AWS Firecracker before 0.21.3, and 0.22.x before 0.22.1, the serial console buffer can grow its memory usage without limit when data is sent to the standard input. This can result in a memory leak on the microVM emulation thread, possibly occupying more memory than intended on the host.

Category

7.5
CVSS
Severity: High
CVSS 3.1 •
CVSS 2.0 •
EPSS 0.56%
Third-Party Advisory openwall.com Third-Party Advisory github.com Third-Party Advisory github.com Third-Party Advisory github.com
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
https://github.com/firecracker-microvm/firecracker/issues/2177 third party advisory
https://github.com/firecracker-microvm/firecracker/pull/2178 third party advisory patch
https://github.com/firecracker-microvm/firecracker/pull/2179 third party advisory patch
http://www.openwall.com/lists/oss-security/2020/10/23/1 third party advisory mailing list

Frequently Asked Questions

What is the severity of CVE-2020-27174?
CVE-2020-27174 has been scored as a high severity vulnerability.
How to fix CVE-2020-27174?
To fix CVE-2020-27174, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2020-27174 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2020-27174 is being actively exploited. According to its EPSS score, there is a ~1% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
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