Input validation error in Linux kernel

1) Input validation error

EUVDB-ID: #VU43235

Risk: Medium

CVSSv3.1: 4.6 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2012-4444

CWE-ID: CWE-20 - Improper input validation

Exploit availability: No

Description

The vulnerability allows a remote non-authenticated attacker to manipulate data.

The ip6_frag_queue function in net/ipv6/reassembly.c in the Linux kernel before 2.6.36 allows remote attackers to bypass intended network restrictions via overlapping IPv6 fragments.

Mitigation

Install update from vendor's website.

Vulnerable software versions

Linux kernel: 2.6.30 - 2.6.36

External links

http://ftp.osuosl.org/pub/linux/kernel/v2.6/ChangeLog-2.6.36
http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=70789d7052239992824628db8133de08dc78e593
http://lists.opensuse.org/opensuse-security-announce/2013-06/msg00000.html
http://rhn.redhat.com/errata/RHSA-2012-1580.html
http://www.openwall.com/lists/oss-security/2012/11/09/2
http://www.ubuntu.com/usn/USN-1660-1
http://www.ubuntu.com/usn/USN-1661-1
http://bugzilla.redhat.com/show_bug.cgi?id=874835
http://github.com/torvalds/linux/commit/70789d7052239992824628db8133de08dc78e593
http://media.blackhat.com/bh-eu-12/Atlasis/bh-eu-12-Atlasis-Attacking_IPv6-WP.pdf

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.