Resource exhaustion in Vm-Superio Project
CVE-2020-27173
In vm-superio before 0.1.1, the serial console FIFO can grow to unlimited memory usage when data is sent to the input source (i.e., standard input). This behavior cannot be reproduced from the guest side. When no rate limiting is in place, the host can be subject to memory pressure, impacting all other VMs running on the same 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: 0.015 (73.9th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 74th percentile — 73.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.015 · newest: 0.015 · change: 0.000
Affected products
Weakness classification (CWE)
Public proof-of-concept exploits
References
- github.com/rust-vmm/vm-superio/issues/17 (Third Party Advisory)
- github.com/rust-vmm/vm-superio/pull/19 (Patch, Third Party Advisory)
Frequently asked questions
- What is CVE-2020-27173?
- CVE-2020-27173 is a high-severity vulnerability in Vm-Superio Project, classified under Allocation of Resources Without Limits or Throttling. CVSS score: 7.5/10. Published 2020-10-16.
- How severe is CVE-2020-27173?
- High severity. CVSS v3 base score is 7.5 out of 10.
- Is CVE-2020-27173 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.