Information disclosure in FreeBSD

1) Information disclosure

EUVDB-ID: #VU35660

Risk: Medium

CVSSv4.0: 4.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2019-5605

CWE-ID: CWE-200 - Exposure of sensitive information to an unauthorized actor

Exploit availability: No

Description

The vulnerability allows a remote authenticated user to gain access to sensitive information.

In FreeBSD 11.3-STABLE before r350217, 11.3-RELEASE before 11.3-RELEASE-p1, and 11.2-RELEASE before 11.2-RELEASE-p12, due to insufficient initialization of memory copied to userland in the freebsd32_ioctl interface, small amounts of kernel memory may be disclosed to userland processes. This may allow an attacker to leverage this information to obtain elevated privileges either directly or indirectly.

Mitigation

Install update from vendor's website.

Vulnerable software versions

FreeBSD: 11.0 - 12.0

CPE2.3

• cpe:2.3:o:freebsd_foundation:freebsd:11.0:*:*:*:*:*:*:*
• cpe:2.3:o:freebsd_foundation:freebsd:11.2:*:*:*:*:*:*:*
• cpe:2.3:o:freebsd_foundation:freebsd:11.3:*:*:*:*:*:*:*

External links

https://packetstormsecurity.com/files/153749/FreeBSD-Security-Advisory-FreeBSD-SA-19-14.freebsd32.html
https://security.FreeBSD.org/advisories/FreeBSD-SA-19:14.freebsd32.asc
https://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.