Vulnerability Monitor

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CVE-2020-27174

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.

Published

2020-10-16T05:15:11.830

Last Modified

2024-11-21T05:20:49.117

Status

Modified

Source

[email protected]

Severity

CVSSv3.1: 7.5 (HIGH)

CVSSv2 Vector

AV:N/AC:L/Au:N/C:N/I:N/A:P

Access Vector: NETWORK
Access Complexity: LOW
Authentication: NONE
Confidentiality Impact: NONE
Integrity Impact: NONE
Availability Impact: PARTIAL

Exploitability Score

10.0

Impact Score

2.9

Weaknesses

Type: Primary
CWE-401

Affected Vendors & Products

Type	Vendor	Product	Version/Range	Vulnerable?
Application	amazon	firecracker	< 0.21.3	Yes
Application	amazon	firecracker	< 0.22.1	Yes

References

http://www.openwall.com/lists/oss-security/2020/10/23/1 Third Party Advisory ([email protected])
https://github.com/firecracker-microvm/firecracker/issues/2177 Third Party Advisory ([email protected])
https://github.com/firecracker-microvm/firecracker/pull/2178 Patch, Third Party Advisory ([email protected])
https://github.com/firecracker-microvm/firecracker/pull/2179 Patch, Third Party Advisory ([email protected])
http://www.openwall.com/lists/oss-security/2020/10/23/1 Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://github.com/firecracker-microvm/firecracker/issues/2177 Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://github.com/firecracker-microvm/firecracker/pull/2178 Patch, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://github.com/firecracker-microvm/firecracker/pull/2179 Patch, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)