Vulnerability in Amazon Firecracker
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 · last modified .
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.
EPSS exploit prediction
EPSS: 0.017 (76.8th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 77th percentile — 76.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.017 · newest: 0.017 · change: 0.000
Affected products
Weakness classification (CWE)
References
- github.com/firecracker-microvm/firecracker/issues/2177 (Third Party Advisory)
- github.com/firecracker-microvm/firecracker/pull/2178 (Patch, Third Party Advisory)
- github.com/firecracker-microvm/firecracker/pull/2179 (Patch, Third Party Advisory)
- www.openwall.com/lists/oss-security/2020/10/23/1 (mailing-list, Third Party Advisory)
Frequently asked questions
- What is CVE-2020-27174?
- CVE-2020-27174 is a high-severity vulnerability in Amazon Firecracker, classified under Missing Release of Memory after Effective Lifetime. CVSS score: 7.5/10. Published 2020-10-16.
- How severe is CVE-2020-27174?
- High severity. CVSS v3 base score is 7.5 out of 10.