VulnerabilityModified
CVE-2020-27174
This can result in a memory leak on the microVM emulation thread, possibly occupying more memory than intended on the host.
HIGH 7.5EPSS 1.74%
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (1.74%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
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.
- CVSS 3.1
- 7.5 HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- EPSS
- 1.74% probability · 76th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-401
- Affected
- amazon/firecracker
- Source
- cve@mitre.org
References
- http://www.openwall.com/lists/oss-security/2020/10/23/1Third Party Advisory
- https://github.com/firecracker-microvm/firecracker/issues/2177Third Party Advisory
- https://github.com/firecracker-microvm/firecracker/pull/2178Patch, Third Party Advisory
- https://github.com/firecracker-microvm/firecracker/pull/2179Patch, Third Party Advisory
- http://www.openwall.com/lists/oss-security/2020/10/23/1Third Party Advisory
- https://github.com/firecracker-microvm/firecracker/issues/2177Third Party Advisory
- https://github.com/firecracker-microvm/firecracker/pull/2178Patch, Third Party Advisory
- https://github.com/firecracker-microvm/firecracker/pull/2179Patch, Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.