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CVE-2012-2663

Published: 15 February 2014

extensions/libxt_tcp.c in iptables through 1.4.21 does not match TCP SYN+FIN packets in --syn rules, which might allow remote attackers to bypass intended firewall restrictions via crafted packets. NOTE: the CVE-2012-6638 fix makes this issue less relevant.

Notes

AuthorNote
sbeattie
This is an iptables userspace issue. A kernel CVE was also
assigned as CVE-2012-6638, which has been addressed in Ubuntu kernels.
mdeslaur
There is no available fix for this issue for iptables, and
changing this would result in an unexpected change in behaviour.
We will not be fixing this in Ubuntu stable releases, marking as
ignored.

Priority

Low

Status

Package Release Status
iptables
Launchpad, Ubuntu, Debian
artful Ignored
(end of life)
bionic Ignored

cosmic Ignored
(end of life)
disco Ignored
(end of life)
eoan Ignored
(end of life)
focal Ignored

hardy Ignored
(end of life)
lucid Ignored
(end of life)
natty Ignored
(end of life)
oneiric Ignored
(end of life)
precise Ignored
(end of life)
quantal Ignored
(end of life)
raring Ignored
(end of life)
saucy Ignored
(end of life)
trusty Ignored

upstream Needed

utopic Ignored
(end of life)
vivid Ignored
(end of life)
wily Ignored
(end of life)
xenial Ignored

yakkety Ignored
(end of life)
zesty Ignored
(end of life)