What is CVE-2012-2663?

CVE-2012-2663 is a vulnerability in Netfilter Iptables. Published 2014-02-15.

Is CVE-2012-2663 known to be exploited?

2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Vulnerability in Netfilter Iptables

CVE-2012-2663

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.

EPSS: 0.028 (85.3th percentile) — read the EPSS interpretation.

Affected products

Netfilter Iptables
N/a — versions n/a

Public proof-of-concept exploits

CodingSimia/jenkins-shiftleft
Live-Hack-CVE/CVE-2012-6638

References

secalert@redhat.com (mailing-list, x_refsource_MLIST, Patch, Third Party Advisory)
secalert@redhat.com (x_refsource_CONFIRM, Patch, Third Party Advisory, Mitigation, Issue Tracking)

Frequently asked questions

What is CVE-2012-2663?: CVE-2012-2663 is a vulnerability in Netfilter Iptables. Published 2014-02-15.
Is CVE-2012-2663 known to be exploited?: 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.