CVE-2012-2663

Publication date 15 February 2014

Last updated 4 August 2025

Ubuntu priority

Low

Why this priority?

Description

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.

Read the notes from the security team

Status

Package Ubuntu Release Status
iptables 20.04 LTS focal Ignored
19.10 eoan Ignored end of life
19.04 disco Ignored end of life
18.10 cosmic Ignored end of life
18.04 LTS bionic Ignored
17.10 artful Ignored end of life
17.04 zesty Ignored end of life
16.10 yakkety Ignored end of life
16.04 LTS xenial Ignored
15.10 wily Ignored end of life
15.04 vivid Ignored end of life
14.10 utopic Ignored end of life
14.04 LTS trusty Ignored end of standard support
13.10 saucy Ignored end of life
13.04 raring Ignored end of life
12.10 quantal Ignored end of life
12.04 LTS precise Ignored end of life
11.10 oneiric Ignored end of life
11.04 natty Ignored end of life
10.04 LTS lucid Ignored end of life
8.04 LTS hardy Ignored end of life

Notes

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.

References

Other references

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