PT-2020-16647 · Amazon+1 · Amazon Aws Firecracker+1

Alexandra Iordache · Published 2020-10-16 · Updated 2021-07-21 · CVE-2020-27174

Positive Technologies (AI Summary)

CVSS v3.1

7.5

High

Base vector

AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Name of the Vulnerable Software and Affected Versions Amazon AWS Firecracker versions 0.21.3 and earlier, 0.22.x before 0.22.1

Description The issue is related to the serial console buffer, which 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.

Recommendations For Amazon AWS Firecracker versions 0.21.3 and earlier, update to version 0.21.3 or later. For Amazon AWS Firecracker versions 0.22.x before 0.22.1, update to version 0.22.1 or later.

Fix

Memory Leak

Weakness Enumeration

CWE-401

Related Identifiers

ALT-PU-2020-3247

CVE-2020-27174

Affected Products

Alt Linux

Amazon Aws Firecracker

References · 6

• https://github.com/firecracker-microvm/firecracker/pull/2179 · Patch
• https://github.com/firecracker-microvm/firecracker/pull/2178 · Patch
• https://nvd.nist.gov/vuln/detail/CVE-2020-27174 · Security Note
• https://osv.dev/vulnerability/CVE-2020-27174 · Vendor Advisory
• https://github.com/firecracker-microvm/firecracker/issues/2177 · Note
• http://openwall.com/lists/oss-security/2020/10/23/1 · Note