#VU20024 Out-of-bounds write in FreeBSD - CVE-2019-5609
Published: August 9, 2019 / Updated: July 12, 2022
Vulnerability identifier: #VU20024
Vulnerability risk: Medium
CVSSv4.0: CVSS:4.0/AV:A/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2019-5609
CWE-ID: CWE-787
Exploitation vector: Adjecent network
Exploit availability:
No public exploit available
Vulnerable software:
FreeBSD
FreeBSD
Software vendor:
FreeBSD Foundation
FreeBSD Foundation
Description
The vulnerability allows a remote authenticated user to compromise vulnerable system.
The vulnerability exists due to a boundary error within bhyve(8) hypervisor when processing TCP packets sent via the e1000 network adapters. A remote user with access to guest operating system can send specially crafted TCP packets, trigger out-of-bounds write and execute arbitrary code on the host system.
Remediation
Install updates from vendor's website.