PT-2019-17778 · Freebsd · Freebsd

Reno Robert · Published 2019-08-06 · Updated 2023-01-31 · CVE-2019-5609

Positive Technologies (AI Summary)

CVSS v3.1

7.5

High

Base vector

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

Name of the Vulnerable Software and Affected Versions FreeBSD versions 11.2-RELEASE through 11.2-RELEASE-p12 FreeBSD versions 11.3-RELEASE through 11.3-RELEASE-p1 FreeBSD versions 12.0-RELEASE through 12.0-RELEASE-p8

Description The issue arises from the bhyve e1000 device emulation, which uses 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. This allows a misbehaving bhyve guest to potentially overwrite memory in the bhyve process on the host.

Recommendations For FreeBSD versions 11.2-RELEASE through 11.2-RELEASE-p12, update to 11.2-RELEASE-p13 or later. For FreeBSD versions 11.3-RELEASE through 11.3-RELEASE-p1, update to 11.3-RELEASE-p2 or later. For FreeBSD versions 12.0-RELEASE through 12.0-RELEASE-p8, update to 12.0-RELEASE-p9 or later.

Fix

Memory Corruption

Weakness Enumeration

CWE-787

Related Identifiers

CVE-2019-5609

FREEBSD-SA-19_21

Affected Products

Freebsd

References · 4

• https://nvd.nist.gov/vuln/detail/CVE-2019-5609 · Security Note
• https://security.freebsd.org/advisories/FreeBSD-SA-19:21.bhyve.asc · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2019-5609 · Vendor Advisory
• https://security.netapp.com/advisory/ntap-20190910-0002 · Note