CVE-2019-5609 Information

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.

CVSS Vector

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

Reference

https://security.FreeBSD.org/advisories/FreeBSD-SA-19:21.bhyve.asc https://security.netapp.com/advisory/ntap-20190910-0002/

Attack Complexity

LOW

Privileges Required

NONE

User Interaction Required

NONE

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

NONE

Availability Impact

HIGH

Base Score

NONE

Base Severity

7.5