Vulnerability · Published Oct 16, 2020 · Assigned by mitre

CVE-2020-27174

High 7.5

In plain English

A high-severity security flaw in the affected software. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 1.7% (higher than 78% of all known vulnerabilities).

Severity (CVSS NVD)7.5High

Exploit odds (30 days)1.7%top 22.2% of all CVEs

Exploited in the wildNo reportsnot in CISA KEV

Attack toolingNoneno public tooling known

Official 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.

Affected products (as reported)

Vendor	Product	Versions
n/a	n/a	n/a

References

https://github.com/firecracker-microvm/firecracker/issues/2177 x_refsource_MISC
https://github.com/firecracker-microvm/firecracker/pull/2178 x_refsource_MISC
https://github.com/firecracker-microvm/firecracker/pull/2179 x_refsource_MISC
[oss-security] 20201023 CVE-2020-27174: Firecracker serial console emulation may allocate an unbounded amount of memory mailing-list, x_refsource_MLIST