CVE-2020-27174 Information

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 Vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Reference

http://www.openwall.com/lists/oss-security/2020/10/23/1 https://github.com/firecracker-microvm/firecracker/issues/2177 https://github.com/firecracker-microvm/firecracker/pull/2178 https://github.com/firecracker-microvm/firecracker/pull/2179

Attack Complexity

LOW

Privileges Required

NONE

User Interaction Required

NONE

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

NONE

Availability Impact

NONE

Base Score

HIGH

Base Severity

7.5