Vulnerability CVE-2013-4387
Published: 2013-10-10   Modified: 2013-10-11

Description:
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.

See advisories in our WLB2 database:
Topic
Author
Date
High
Linux kernel memory corruption with ipv6 udp offloading
Hannes Frederic ...
28.09.2013

Type:

CWE-119

 (Improper Restriction of Operations within the Bounds of a Memory Buffer)

CVSS2 => (AV:A/AC:L/Au:N/C:N/I:N/A:C)

CVSS Base Score
Impact Subscore
Exploitability Subscore
6.1/10
6.9/10
6.5/10
Exploit range
Attack complexity
Authentication
Adjacent network
Low
No required
Confidentiality impact
Integrity impact
Availability impact
None
None
Complete
Affected software
Linux -> Linux kernel 

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