CVE-2020-27174

HIGH

Amazon AWS Firecracker <0.21.3-0.22.1 - Memory Corruption

Title source: llm
STIX 2.1

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.

References (4)

Core 4
Core References
Patch, Third Party Advisory x_refsource_misc
https://github.com/firecracker-microvm/firecracker/pull/2178
Patch, Third Party Advisory x_refsource_misc
https://github.com/firecracker-microvm/firecracker/pull/2179
Third Party Advisory mailing-list x_refsource_mlist
http://www.openwall.com/lists/oss-security/2020/10/23/1

Scores

CVSS v3 7.5
EPSS 0.0056
EPSS Percentile 68.6%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Details

CWE
CWE-401
Status published
Products (1)
amazon/firecracker < 0.21.3
Published Oct 16, 2020
Tracked Since Feb 18, 2026