Input validation error in Linux kernel

1) Input validation error

EUVDB-ID: #VU45491

Risk: High

CVSSv4.0: 6.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber]

CVE-ID: CVE-2010-4160

CWE-ID: CWE-20 - Improper input validation

Exploit availability: No

Description

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

Multiple integer overflows in the (1) pppol2tp_sendmsg function in net/l2tp/l2tp_ppp.c, and the (2) l2tp_ip_sendmsg function in net/l2tp/l2tp_ip.c, in the PPPoL2TP and IPoL2TP implementations in the Linux kernel before 2.6.36.2 allow local users to cause a denial of service (heap memory corruption and panic) or possibly gain privileges via a crafted sendto call.

Mitigation

Install update from vendor's website.

Vulnerable software versions

Linux kernel: 2.6.0 - 2.6.36

CPE2.3

• cpe:2.3:o:linux_foundation:linux_kernel:2.6.0:*:*:*:*:*:*:*
• cpe:2.3:o:linux_foundation:linux_kernel:2.6.1:*:*:*:*:*:*:*
• cpe:2.3:o:linux_foundation:linux_kernel:2.6.2:*:*:*:*:*:*:*
• cpe:2.3:o:linux_foundation:linux_kernel:2.6.3:*:*:*:*:*:*:*
• cpe:2.3:o:linux_foundation:linux_kernel:2.6.4:*:*:*:*:*:*:*
• cpe:2.3:o:linux_foundation:linux_kernel:2.6.5:*:*:*:*:*:*:*
• cpe:2.3:o:linux_foundation:linux_kernel:2.6.6:*:*:*:*:*:*:*
• cpe:2.3:o:linux_foundation:linux_kernel:2.6.7:*:*:*:*:*:*:*
• cpe:2.3:o:linux_foundation:linux_kernel:2.6.8:*:*:*:*:*:*:*
• cpe:2.3:o:linux_foundation:linux_kernel:2.6.8.1:*:*:*:*:*:*:*

External links

https://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=253eacc070b114c2ec1f81b067d2fed7305467b0
https://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=8acfe468b0384e834a303f08ebc4953d72fb690a
https://lists.opensuse.org/opensuse-security-announce/2011-01/msg00001.html
https://lists.opensuse.org/opensuse-security-announce/2011-01/msg00004.html
https://lists.opensuse.org/opensuse-security-announce/2011-01/msg00007.html
https://lists.opensuse.org/opensuse-security-announce/2011-02/msg00002.html
https://openwall.com/lists/oss-security/2010/11/10/16
https://openwall.com/lists/oss-security/2010/11/10/5
https://openwall.com/lists/oss-security/2010/11/24/12
https://openwall.com/lists/oss-security/2010/11/24/4
https://openwall.com/lists/oss-security/2010/11/24/5
https://openwall.com/lists/oss-security/2010/11/24/6
https://secunia.com/advisories/42801
https://secunia.com/advisories/42890
https://secunia.com/advisories/42932
https://secunia.com/advisories/43056
https://secunia.com/advisories/43291
https://www.kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.36.2
https://www.redhat.com/support/errata/RHSA-2011-0007.html
https://www.securityfocus.com/bid/44762
https://www.spinics.net/lists/netdev/msg145248.html
https://www.spinics.net/lists/netdev/msg145673.html
https://www.vupen.com/english/advisories/2011/0012
https://www.vupen.com/english/advisories/2011/0124
https://www.vupen.com/english/advisories/2011/0213
https://www.vupen.com/english/advisories/2011/0375
https://xorl.wordpress.com/2010/11/11/cve-2010-4160-linux-kernel-l2tp-integer-overflows/
https://bugzilla.redhat.com/show_bug.cgi?id=651892

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.