Firewall Builder: Privilege escalation

1. Gentoo Linux Security Advisory

Advisory Reference	GLSA 201201-11 / fwbuilder
Release Date	January 23, 2012
Latest Revision	January 23, 2012: 1
Impact	normal
Exploitable	local

Package	Vulnerable versions	Unaffected versions	Architecture(s)
net-firewall/fwbuilder	< 3.0.7	>= 3.0.7	All supported architectures

Related bugreports: #235809, #285861

Synopsis

Insecure temporary file usage in Firewall Builder could allow attackers to overwrite arbitrary files.

2. Impact Information

Background

Firewall Builder is a GUI for easy management of multiple firewall platforms.

Description

Two vulnerabilities in Firewall Builder allow the iptables and fwb_install scripts to use temporary files insecurely.

Impact

A local attacker could possibly overwrite arbitrary files with the privileges of the user running Firewall Builder.

3. Resolution Information

Workaround

There is no known workaround at this time.

Resolution

All Firewall Builder users should upgrade to the latest version:

Code Listing 3.1: Resolution

  # emerge --sync
  # emerge --ask --oneshot --verbose ">=net-firewall/fwbuilder-3.0.7"

NOTE: This is a legacy GLSA. Updates for all affected architectures are available since March 09, 2010. It is likely that your system is already no longer affected by this issue.

4. References

Page updated January 23, 2012

Summary: This is a Gentoo Linux Security Advisory

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