CVE-2019-5609

Description

In FreeBSD 12.0-STABLE before r350619, 12.0-RELEASE before 12.0-RELEASE-p9, 11.3-STABLE before r350619, 11.3-RELEASE before 11.3-RELEASE-p2, and 11.2-RELEASE before 11.2-RELEASE-p13, the bhyve e1000 device emulation used a guest-provided value to determine the size of the on-stack buffer without validation when TCP segmentation offload is requested for a transmitted packet. A misbehaving bhyve guest could overwrite memory in the bhyve process on the host.

Category

7.5
CVSS
Severity: High
CVSS 3.1 •
CVSS 2.0 •
EPSS 0.66% Top 30%
Vendor Advisory FreeBSD.org
Affected: n/a FreeBSD
Published at:
Updated at:

References

Link Tags
https://security.FreeBSD.org/advisories/FreeBSD-SA-19:21.bhyve.asc patch vendor advisory
https://security.netapp.com/advisory/ntap-20190910-0002/ third party advisory

Frequently Asked Questions

What is the severity of CVE-2019-5609?
CVE-2019-5609 has been scored as a high severity vulnerability.
How to fix CVE-2019-5609?
To fix CVE-2019-5609, 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-2019-5609 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2019-5609 is being actively exploited. According to its EPSS score, there is a ~1% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2019-5609?
CVE-2019-5609 affects n/a FreeBSD.
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