CVE-2020-27173

Description

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.

Category

7.5
CVSS
Severity: High
CVSS 3.1 •
CVSS 2.0 •
EPSS 0.33%
Third-Party Advisory github.com Third-Party Advisory github.com
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
https://github.com/rust-vmm/vm-superio/issues/17 third party advisory
https://github.com/rust-vmm/vm-superio/pull/19 third party advisory patch

Frequently Asked Questions

What is the severity of CVE-2020-27173?
CVE-2020-27173 has been scored as a high severity vulnerability.
How to fix CVE-2020-27173?
To fix CVE-2020-27173, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2020-27173 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2020-27173 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
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