VulnerabilityModified
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.
HIGH 7.5EPSS 2.74%
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (2.74%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
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.
- CVSS 2.0
- 7.5 HIGHAV:N/AC:L/Au:N/C:P/I:P/A:P
- EPSS
- 2.74% probability · 85th percentile
- CISA KEV
- Not listed
- Affected
- netfilter/iptables
- Source
- secalert@redhat.com
References
- http://www.spinics.net/lists/netfilter-devel/msg21248.htmlPatch, Third Party Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=826702Issue Tracking, Mitigation, Patch, Third Party Advisory
- http://www.spinics.net/lists/netfilter-devel/msg21248.htmlPatch, Third Party Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=826702Issue Tracking, Mitigation, Patch, Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.