Resource management error in FreeBSD - #VU20353
Published: August 21, 2019
Vulnerability identifier: #VU20353
CSH Severity: Medium
CVSS v4: 5.7 [CVSS:4.0/AV:A/AC:L/AT:P/PR:H/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]
CVE-ID: N/A
CWE-ID: CWE-399
Exploitation vector: Adjecent network
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to absent handling of certain instructions in bhyve(8). A remote attacker with access to guest operating system can use the unsupported instructions to crash the bhyve hypervisor.
Affected software
FreeBSD
Remediation
Install updates from vendor's website.