Input validation error in Linux kernel

1) Input validation error

EUVDB-ID: #VU43049

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-2013-1763

CWE-ID: CWE-20 - Improper input validation

Exploit availability: Yes

Description

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

Array index error in the __sock_diag_rcv_msg function in net/core/sock_diag.c in the Linux kernel before 3.7.10 allows local users to gain privileges via a large family value in a Netlink message.

Mitigation

Install update from vendor's website.

Vulnerable software versions

Linux kernel: 3.0 - 3.7.8

External links

http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=6e601a53566d84e1ffd25e7b6fe0b6894ffd79c0
http://lists.opensuse.org/opensuse-security-announce/2013-03/msg00004.html
http://openwall.com/lists/oss-security/2013/02/25/12
http://www.exploit-db.com/exploits/24555
http://www.exploit-db.com/exploits/24746
http://www.exploit-db.com/exploits/33336
http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.7.10
http://www.mandriva.com/security/advisories?name=MDVSA-2013:176
http://www.openwall.com/lists/oss-security/2013/02/24/3
http://www.ubuntu.com/usn/USN-1749-1
http://www.ubuntu.com/usn/USN-1750-1
http://www.ubuntu.com/usn/USN-1751-1
http://bugzilla.redhat.com/show_bug.cgi?id=915052
http://github.com/torvalds/linux/commit/6e601a53566d84e1ffd25e7b6fe0b6894ffd79c0

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.