Out-of-bounds read in FreeBSD

1) Out-of-bounds read

EUVDB-ID: #VU35659

Risk: High

CVSSv3.1: 8.3 [CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2019-5604

CWE-ID: CWE-125 - Out-of-bounds read

Exploit availability: No

Description

The vulnerability allows a remote authenticated user to #BASIC_IMPACT#.

In FreeBSD 12.0-STABLE before r350246, 12.0-RELEASE before 12.0-RELEASE-p8, 11.3-STABLE before r350247, 11.3-RELEASE before 11.3-RELEASE-p1, and 11.2-RELEASE before 11.2-RELEASE-p12, the emulated XHCI device included with the bhyve hypervisor did not properly validate data provided by the guest, allowing an out-of-bounds read. This provides a malicious guest the possibility to crash the system or access system memory.

Mitigation

Install update from vendor's website.

Vulnerable software versions

FreeBSD: 11.0 - 12.0

External links

http://packetstormsecurity.com/files/153753/FreeBSD-Security-Advisory-FreeBSD-SA-19-16.bhyve.html
http://security.FreeBSD.org/advisories/FreeBSD-SA-19:16.bhyve.asc
http://security.netapp.com/advisory/ntap-20190814-0003/

Q & A

Can this vulnerability be exploited remotely?

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

Is there known malware, which exploits this vulnerability?

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