#VU99539 Memory leak in FreeBSD - CVE-2024-43110

Vulnerability identifier: #VU99539

Vulnerability risk: Medium

CVSSv4.0: 4.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2024-43110

CWE-ID: CWE-401

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
FreeBSD
Operating systems & Components / Operating system

Vendor: FreeBSD Foundation

Description
The vulnerability allows a malicious guest to gain access to sensitive information.

The vulnerability exists due memory leak within the ctl_request_sense() function. A malicious guest can obtain up to 3 bytes of kernel heap and use this information to achieve code execution on the hypervisor.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

FreeBSD: 13.3 - 14.1

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External links
https://security.freebsd.org/advisories/FreeBSD-SA-24:11.ctl.asc

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote authenticated privileged user via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.