CVE-2013-4563
HIGH severity · CVSS 7.1 · CWE-189
7.1CVSS HIGH
Summary
The udp6_ufo_fragment function in net/ipv6/udp_offload.c in the Linux kernel through 3.12, when UDP Fragmentation Offload (UFO) is enabled, does not properly perform a certain size comparison before inserting a fragment header, which allows remote attackers to cause a denial of service (panic) via a large IPv6 UDP packet, as demonstrated by use of the Token Bucket Filter (TBF) queueing discipline.
Impact & exploitability
Attack vectorNetwork
Attack complexity—
Privileges required—
User interaction—
Confidentiality impactNone
Integrity impactNone
Availability impact—
Exploit probability (EPSS)4%
AV:N/AC:M/Au:N/C:N/I:N/A:C
Affected products we track (1)
Recommendation
Apply the vendor fix promptly. Open any affected product above for its exact safe version.
Official patch: http://www.openwall.com/lists/oss-security/2013/11/13/9 ↗
Additional information
- NVD record
- http://www.openwall.com/lists/oss-security/2013/11/13/9Patch
- https://github.com/torvalds/linux/commit/0e033e04c2678dbbe74a46b23fffb7bb918c288ePatch
- http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=0e033e04c2678dbbe74a46b23fffb7bb918c288eAdvisory
- http://lists.opensuse.org/opensuse-security-announce/2014-02/msg00003.htmlAdvisory
- http://www.ubuntu.com/usn/USN-2113-1Advisory
- http://www.ubuntu.com/usn/USN-2117-1Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1030015