RedHat Linux IPTables Save Option Unrestorable Rules Vulnerability

BID:3520

Info

RedHat Linux IPTables Save Option Unrestorable Rules Vulnerability

Bugtraq ID: 3520
Class: Design Error
CVE:
Remote: Yes
Local: No
Published: Nov 08 2001 12:00AM
Updated: Nov 08 2001 12:00AM
Credit: This vulnerability was first published in RedHat advisory RHSA-2001:0144.
Vulnerable: RedHat Linux 7.2 i386
RedHat Linux 7.1 i386
RedHat Linux 7.1 alpha
RedHat iptables-ipv6-1.2.3-1.i386.rpm
+ RedHat Linux 7.2
RedHat iptables-ipv6-1.2.1a-1.i386.rpm
+ RedHat Linux 7.1
RedHat iptables-1.2.3-1.i386.rpm
+ RedHat Linux 7.2
RedHat iptables-1.2.3-1.i386.rpm
+ RedHat Linux 7.1
Not Vulnerable:

Discussion

RedHat Linux IPTables Save Option Unrestorable Rules Vulnerability

Red Hat Linux is a freely available, Open Source clone of the Unix Operating System. It is distributed and maintained by Red Hat Incorporated.

A problem with the firewall infrastructure included with the Operating System could make it possible for a administrator to unknowingly expose a system to unnecessary risk. The -c option creates a save-file that is not readable by iptables. When iptables attempts to reload the file at system reboot, it will fail.

This makes it possible for an uninformed administrator to leave a system unprotected, and potentially allow access to restricted resources by remote users.

Exploit / POC

RedHat Linux IPTables Save Option Unrestorable Rules Vulnerability

No exploit is necessary for this vulnerability.

Solution / Fix

RedHat Linux IPTables Save Option Unrestorable Rules Vulnerability

Solution:
Vendor fixes available:


RedHat iptables-1.2.3-1.i386.rpm

RedHat iptables-ipv6-1.2.3-1.i386.rpm

RedHat iptables-ipv6-1.2.1a-1.i386.rpm

RedHat Linux 7.1 i386

RedHat Linux 7.1 alpha

RedHat Linux 7.2 i386

References

RedHat Linux IPTables Save Option Unrestorable Rules Vulnerability

References:

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