CVE-2013-4563
Description
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.
Predictions
Heuristic predictions, AS-IS, for prioritization only.
Mitigations
No mitigations published for this CVE yet.
The vendor-content worker queues fetches as references arrive (check back in a few minutes). Or — if you've already worked around this in production — publish your fix to the community-verified tier.
✚ Propose a mitigation on Community → Mitigations published via the community go through AI scoring + 2 human reviewers + 7-day silent objection window before landing here withsource_tier=community-verified.
OS impact
| OS | Version | Status | Fixed in |
|---|---|---|---|
| ubuntu | 12.04 | affected | |
| ubuntu | 13.10 | affected | |
| debian | bookworm | fixed | 3.11.10-1 |
| debian | bullseye | fixed | 3.11.10-1 |
| debian | forky | fixed | 3.11.10-1 |
| debian | sid | fixed | 3.11.10-1 |
| debian | trixie | fixed | 3.11.10-1 |
| linux-kernel | affected | 3.12.4 |
References
- http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=0e033e04c2678dbbe74a46b23fffb7bb918c288e
- http://lists.opensuse.org/opensuse-security-announce/2014-02/msg00003.html
- http://www.openwall.com/lists/oss-security/2013/11/13/9
- http://www.ubuntu.com/usn/USN-2113-1
- http://www.ubuntu.com/usn/USN-2117-1
- https://bugzilla.redhat.com/show_bug.cgi?id=1030015
- https://github.com/torvalds/linux/commit/0e033e04c2678dbbe74a46b23fffb7bb918c288e
- https://security-tracker.debian.org/tracker/CVE-2013-4563
CWEs
CWE-189
Community-verified mitigations for this CVE will appear above when contributors publish them.
Verify integrity in audit chain (admin only). AS-IS.