Detections
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Echo: iptables: security update to 1.4.22

high Tenable Self-Hosted Container Security Plugin ID 463379

Description

There are packages installed that are affected by a vulnerability referenced in the following CVE:

 - 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. (CVE-2012-2663)

Solution

Update the iptables library and its related packages to version 1.4.22 or later.

See Also

https://advisory.echohq.com/cve/CVE-2012-2663

Plugin Details

Severity: High

ID: 463379

Version: Revision 1.1

Type: Local

Published: 10/2/2026

Updated: 10/2/2026

Risk Information

VPR

Risk Factor: Low

Score: 3

Percentile: 23.18

CVSS v2

Risk Factor: High

Base Score: 7.5

Temporal Score: 5.5

Vector: CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:P

CVSS Score Source: CVE-2012-2663

CVSS v3

Risk Factor: High

Base Score: 7.5

Temporal Score: 6.5

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

Vulnerability Information

Exploit Ease: No known exploits are available

Patch Publication Date: 9/15/2025

Vulnerability Publication Date: 5/30/2012

Reference Information

CVE: CVE-2012-2663