#VU42345 Input validation error in FreeBSD - CVE-2013-6833

Vulnerability identifier: #VU42345

Vulnerability risk: Medium

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

CVE-ID: CVE-2013-6833

CWE-ID: CWE-20

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
FreeBSD
Operating systems & Components / Operating system

Vendor: FreeBSD Foundation

Description

The vulnerability allows a remote non-authenticated attacker to gain access to sensitive information.

The qls_eioctl function in sys/dev/qlxge/qls_ioctl.c in the kernel in FreeBSD 10 and earlier does not validate a certain size parameter, which allows local users to obtain sensitive information from kernel memory via a crafted ioctl call.

Mitigation
Install update from vendor's website.

Vulnerable software versions

FreeBSD: 0.4_1 - 9.2

---

External links
https://archives.neohapsis.com/archives/fulldisclosure/2013-11/0107.html

---

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

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