Buffer overflow in Linux kernel

1) Buffer overflow

EUVDB-ID: #VU42474

Risk: Medium

CVSSv4.0: 4.9 [CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2013-4387

CWE-ID: CWE-119 - Memory corruption

Exploit availability: No

Description

The vulnerability allows a remote non-authenticated attacker to perform a denial of service (DoS) attack.

net/ipv6/ip6_output.c in the Linux kernel through 3.11.4 does not properly determine the need for UDP Fragmentation Offload (UFO) processing of small packets after the UFO queueing of a large packet, which allows remote attackers to cause a denial of service (memory corruption and system crash) or possibly have unspecified other impact via network traffic that triggers a large response packet.

Mitigation

Install update from vendor's website.

Vulnerable software versions

Linux kernel: 3.0 - 3.11.3

CPE2.3

• cpe:2.3:o:linux_foundation:linux_kernel:3.0:*:*:*:*:*:*:*
• cpe:2.3:o:linux_foundation:linux_kernel:3.0.1:*:*:*:*:*:*:*
• cpe:2.3:o:linux_foundation:linux_kernel:3.0.2:*:*:*:*:*:*:*
• cpe:2.3:o:linux_foundation:linux_kernel:3.0.3:*:*:*:*:*:*:*
• cpe:2.3:o:linux_foundation:linux_kernel:3.0.4:*:*:*:*:*:*:*
• cpe:2.3:o:linux_foundation:linux_kernel:3.0.5:*:*:*:*:*:*:*
• cpe:2.3:o:linux_foundation:linux_kernel:3.0.6:*:*:*:*:*:*:*
• cpe:2.3:o:linux_foundation:linux_kernel:3.0.7:*:*:*:*:*:*:*
• cpe:2.3:o:linux_foundation:linux_kernel:3.0.8:*:*:*:*:*:*:*
• cpe:2.3:o:linux_foundation:linux_kernel:3.0.9:*:*:*:*:*:*:*

External links

https://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=2811ebac2521ceac84f2bdae402455baa6a7fb47
https://rhn.redhat.com/errata/RHSA-2013-1490.html
https://rhn.redhat.com/errata/RHSA-2013-1645.html
https://rhn.redhat.com/errata/RHSA-2014-0284.html
https://www.openwall.com/lists/oss-security/2013/09/29/1
https://www.ubuntu.com/usn/USN-2019-1
https://www.ubuntu.com/usn/USN-2021-1
https://www.ubuntu.com/usn/USN-2022-1
https://www.ubuntu.com/usn/USN-2024-1
https://www.ubuntu.com/usn/USN-2038-1
https://www.ubuntu.com/usn/USN-2039-1
https://www.ubuntu.com/usn/USN-2041-1
https://www.ubuntu.com/usn/USN-2045-1
https://www.ubuntu.com/usn/USN-2049-1
https://www.ubuntu.com/usn/USN-2050-1
https://bugzilla.redhat.com/show_bug.cgi?id=1011927
https://github.com/torvalds/linux/commit/2811ebac2521ceac84f2bdae402455baa6a7fb47

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the local network (LAN).

Is there known malware, which exploits this vulnerability?

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