Vulnerability identifier: #VU44600

Vulnerability risk: High

CVSSv3.1: 7.9 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C]

CVE-ID: CVE-2011-4062

CWE-ID: CWE-119

Exploitation vector: Network

Exploit availability: Yes

Vulnerable software:
FreeBSD
Operating systems & Components / Operating system

Vendor: FreeBSD Foundation

Description

The vulnerability allows a remote non-authenticated attacker to execute arbitrary code.

Buffer overflow in the kernel in FreeBSD 7.3 through 9.0-RC1 allows local users to cause a denial of service (panic) or possibly gain privileges via a bind system call with a long pathname for a UNIX socket.

Mitigation
Install update from vendor's website.

Vulnerable software versions

FreeBSD: 7.3 - 9.0

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External links
http://secunia.com/advisories/46202
http://secunia.com/advisories/46564
http://security.freebsd.org/advisories/FreeBSD-SA-11:05.unix.asc
http://security.freebsd.org/patches/SA-11:05/unix2.patch
http://www.debian.org/security/2011/dsa-2325
http://www.exploit-db.com/exploits/17908
http://www.osvdb.org/75788
http://www.securityfocus.com/bid/49862
http://www.securitytracker.com/id?1026106

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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. However, proof of concept for this vulnerability is available.