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Test ID:1.3.6.1.4.1.25623.1.0.870650
Category:Red Hat Local Security Checks
Title:RedHat Update for system-config-firewall RHSA-2011:0953-01
Summary:The remote host is missing an update for the 'system-config-firewall'; package(s) announced via the referenced advisory.
Description:Summary:
The remote host is missing an update for the 'system-config-firewall'
package(s) announced via the referenced advisory.

Vulnerability Insight:
system-config-firewall is a graphical user interface for basic firewall
setup.

It was found that system-config-firewall used the Python pickle module in
an insecure way when sending data (via D-Bus) to the privileged back-end
mechanism. A local user authorized to configure firewall rules using
system-config-firewall could use this flaw to execute arbitrary code with
root privileges, by sending a specially-crafted serialized object.
(CVE-2011-2520)

Red Hat would like to thank Marco Slaviero of SensePost for reporting this
issue.

This erratum updates system-config-firewall to use JSON (JavaScript Object
Notation) for data exchange, instead of pickle. Therefore, an updated
version of system-config-printer that uses this new communication data
format is also provided in this erratum.

Users of system-config-firewall are advised to upgrade to these updated
packages, which contain a backported patch to resolve this issue. Running
instances of system-config-firewall must be restarted before the utility
will be able to communicate with its updated back-end.

Affected Software/OS:
system-config-firewall on Red Hat Enterprise Linux Desktop (v. 6),
Red Hat Enterprise Linux Server (v. 6),
Red Hat Enterprise Linux Workstation (v. 6)

Solution:
Please Install the Updated Packages.

CVSS Score:
6.0

CVSS Vector:
AV:L/AC:H/Au:S/C:C/I:C/A:C

Cross-Ref: Common Vulnerability Exposure (CVE) ID: CVE-2011-2520
BugTraq ID: 48715
http://www.securityfocus.com/bid/48715
http://lists.fedoraproject.org/pipermail/package-announce/2011-August/063314.html
http://www.openwall.com/lists/oss-security/2011/07/18/6
http://www.redhat.com/support/errata/RHSA-2011-0953.html
http://securitytracker.com/id?1025793
http://secunia.com/advisories/45294
XForce ISS Database: systemconfigfirewall-priv-escalation(68734)
https://exchange.xforce.ibmcloud.com/vulnerabilities/68734
CopyrightCopyright (c) 2012 Greenbone Networks GmbH

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