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Category:   Application (Generic)  >   GNOME NetworkManager Vendors:   Gnome Development Team
(Red Hat Issues Fix) GNOME NetworkManager Input Validation Flaw in ifcfg-rh Plugin Lets Local Users Gain Elevated Privileges
SecurityTracker Alert ID:  1026098
SecurityTracker URL:  http://securitytracker.com/id/1026098
CVE Reference:   CVE-2011-3364   (Links to External Site)
Date:  Sep 26 2011
Impact:   Execution of arbitrary code via local system, User access via local system
Fix Available:  Yes  Vendor Confirmed:  Yes  

Description:   A vulnerability was reported in GNOME NetworkManager. A local user can obtain elevated privileges on the target system.

The ifcfg-rh plug-in does not properly validate user-supplied input. On a system that allows local users to create and save network connections, a local user can create a specially crafted connection name to cause arbitrary code to be executed with elevated privileges.

The vulnerability resides in 'src/settings/plugins/ifcfg-rh/shvar.c'.

Matt McCutchen reported this vulnerability.

Impact:   A local user can obtain elevated privileges on the target system.
Solution:   Red Hat has issued a fix.

The Red Hat advisory is available at:

https://rhn.redhat.com/errata/RHSA-2011-1338.html

Vendor URL:  projects.gnome.org/NetworkManager (Links to External Site)
Cause:   Input validation error
Underlying OS:  Linux (Red Hat Enterprise)
Underlying OS Comments:  6

Message History:   This archive entry is a follow-up to the message listed below.
Sep 26 2011 GNOME NetworkManager Input Validation Flaw in ifcfg-rh Plugin Lets Local Users Gain Elevated Privileges



 Source Message Contents

Subject:  [RHSA-2011:1338-01] Moderate: NetworkManager security update

-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1

=====================================================================
                   Red Hat Security Advisory

Synopsis:          Moderate: NetworkManager security update
Advisory ID:       RHSA-2011:1338-01
Product:           Red Hat Enterprise Linux
Advisory URL:      https://rhn.redhat.com/errata/RHSA-2011-1338.html
Issue date:        2011-09-26
CVE Names:         CVE-2011-3364 
=====================================================================

1. Summary:

Updated NetworkManager packages that fix one security issue are now
available for Red Hat Enterprise Linux 6.

The Red Hat Security Response Team has rated this update as having moderate
security impact. A Common Vulnerability Scoring System (CVSS) base score,
which gives a detailed severity rating, is available from the CVE link in
the References section.

2. Relevant releases/architectures:

Red Hat Enterprise Linux Desktop (v. 6) - i386, x86_64
Red Hat Enterprise Linux Desktop Optional (v. 6) - i386, x86_64
Red Hat Enterprise Linux HPC Node Optional (v. 6) - x86_64
Red Hat Enterprise Linux Server (v. 6) - i386, ppc64, s390x, x86_64
Red Hat Enterprise Linux Server Optional (v. 6) - i386, ppc64, s390x, x86_64
Red Hat Enterprise Linux Workstation (v. 6) - i386, x86_64
Red Hat Enterprise Linux Workstation Optional (v. 6) - i386, x86_64

3. Description:

NetworkManager is a network link manager that attempts to keep a wired or
wireless network connection active at all times. The ifcfg-rh
NetworkManager plug-in is used in Red Hat Enterprise Linux distributions to
read and write configuration information from the
/etc/sysconfig/network-scripts/ifcfg-* files.

An input sanitization flaw was found in the way the ifcfg-rh NetworkManager
plug-in escaped network connection names containing special characters. If
PolicyKit was configured to allow local, unprivileged users to create and
save new network connections, they could create a connection with a
specially-crafted name, leading to the escalation of their privileges.
Note: By default, PolicyKit prevents unprivileged users from creating and
saving network connections. (CVE-2011-3364)

Red Hat would like to thank Matt McCutchen for reporting this issue.

Users of NetworkManager should upgrade to these updated packages, which
contain a backported patch to correct this issue. Running instances of
NetworkManager must be restarted ("service NetworkManager restart") for
this update to take effect.

4. Solution:

Before applying this update, make sure all previously-released errata
relevant to your system have been applied.

This update is available via the Red Hat Network. Details on how to
use the Red Hat Network to apply this update are available at
https://access.redhat.com/kb/docs/DOC-11259

5. Bugs fixed (http://bugzilla.redhat.com/):

737338 - CVE-2011-3364 NetworkManager: Console user can escalate to root via newlines in ifcfg-rh connection name

6. Package List:

Red Hat Enterprise Linux Desktop (v. 6):

Source:
ftp://ftp.redhat.com/pub/redhat/linux/enterprise/6Client/en/os/SRPMS/NetworkManager-0.8.1-9.el6_1.3.src.rpm

i386:
NetworkManager-0.8.1-9.el6_1.3.i686.rpm
NetworkManager-debuginfo-0.8.1-9.el6_1.3.i686.rpm
NetworkManager-glib-0.8.1-9.el6_1.3.i686.rpm
NetworkManager-gnome-0.8.1-9.el6_1.3.i686.rpm

x86_64:
NetworkManager-0.8.1-9.el6_1.3.x86_64.rpm
NetworkManager-debuginfo-0.8.1-9.el6_1.3.i686.rpm
NetworkManager-debuginfo-0.8.1-9.el6_1.3.x86_64.rpm
NetworkManager-glib-0.8.1-9.el6_1.3.i686.rpm
NetworkManager-glib-0.8.1-9.el6_1.3.x86_64.rpm
NetworkManager-gnome-0.8.1-9.el6_1.3.x86_64.rpm

Red Hat Enterprise Linux Desktop Optional (v. 6):

Source:
ftp://ftp.redhat.com/pub/redhat/linux/enterprise/6Client/en/os/SRPMS/NetworkManager-0.8.1-9.el6_1.3.src.rpm

i386:
NetworkManager-debuginfo-0.8.1-9.el6_1.3.i686.rpm
NetworkManager-devel-0.8.1-9.el6_1.3.i686.rpm
NetworkManager-glib-devel-0.8.1-9.el6_1.3.i686.rpm

x86_64:
NetworkManager-debuginfo-0.8.1-9.el6_1.3.i686.rpm
NetworkManager-debuginfo-0.8.1-9.el6_1.3.x86_64.rpm
NetworkManager-devel-0.8.1-9.el6_1.3.i686.rpm
NetworkManager-devel-0.8.1-9.el6_1.3.x86_64.rpm
NetworkManager-glib-devel-0.8.1-9.el6_1.3.i686.rpm
NetworkManager-glib-devel-0.8.1-9.el6_1.3.x86_64.rpm

Red Hat Enterprise Linux HPC Node Optional (v. 6):

Source:
ftp://ftp.redhat.com/pub/redhat/linux/enterprise/6ComputeNode/en/os/SRPMS/NetworkManager-0.8.1-9.el6_1.3.src.rpm

x86_64:
NetworkManager-0.8.1-9.el6_1.3.x86_64.rpm
NetworkManager-debuginfo-0.8.1-9.el6_1.3.i686.rpm
NetworkManager-debuginfo-0.8.1-9.el6_1.3.x86_64.rpm
NetworkManager-devel-0.8.1-9.el6_1.3.i686.rpm
NetworkManager-devel-0.8.1-9.el6_1.3.x86_64.rpm
NetworkManager-glib-0.8.1-9.el6_1.3.i686.rpm
NetworkManager-glib-0.8.1-9.el6_1.3.x86_64.rpm
NetworkManager-glib-devel-0.8.1-9.el6_1.3.i686.rpm
NetworkManager-glib-devel-0.8.1-9.el6_1.3.x86_64.rpm
NetworkManager-gnome-0.8.1-9.el6_1.3.x86_64.rpm

Red Hat Enterprise Linux Server (v. 6):

Source:
ftp://ftp.redhat.com/pub/redhat/linux/enterprise/6Server/en/os/SRPMS/NetworkManager-0.8.1-9.el6_1.3.src.rpm

i386:
NetworkManager-0.8.1-9.el6_1.3.i686.rpm
NetworkManager-debuginfo-0.8.1-9.el6_1.3.i686.rpm
NetworkManager-glib-0.8.1-9.el6_1.3.i686.rpm
NetworkManager-gnome-0.8.1-9.el6_1.3.i686.rpm

ppc64:
NetworkManager-0.8.1-9.el6_1.3.ppc64.rpm
NetworkManager-debuginfo-0.8.1-9.el6_1.3.ppc.rpm
NetworkManager-debuginfo-0.8.1-9.el6_1.3.ppc64.rpm
NetworkManager-glib-0.8.1-9.el6_1.3.ppc.rpm
NetworkManager-glib-0.8.1-9.el6_1.3.ppc64.rpm
NetworkManager-gnome-0.8.1-9.el6_1.3.ppc64.rpm

s390x:
NetworkManager-0.8.1-9.el6_1.3.s390x.rpm
NetworkManager-debuginfo-0.8.1-9.el6_1.3.s390.rpm
NetworkManager-debuginfo-0.8.1-9.el6_1.3.s390x.rpm
NetworkManager-glib-0.8.1-9.el6_1.3.s390.rpm
NetworkManager-glib-0.8.1-9.el6_1.3.s390x.rpm
NetworkManager-gnome-0.8.1-9.el6_1.3.s390x.rpm

x86_64:
NetworkManager-0.8.1-9.el6_1.3.x86_64.rpm
NetworkManager-debuginfo-0.8.1-9.el6_1.3.i686.rpm
NetworkManager-debuginfo-0.8.1-9.el6_1.3.x86_64.rpm
NetworkManager-glib-0.8.1-9.el6_1.3.i686.rpm
NetworkManager-glib-0.8.1-9.el6_1.3.x86_64.rpm
NetworkManager-gnome-0.8.1-9.el6_1.3.x86_64.rpm

Red Hat Enterprise Linux Server Optional (v. 6):

Source:
ftp://ftp.redhat.com/pub/redhat/linux/enterprise/6Server/en/os/SRPMS/NetworkManager-0.8.1-9.el6_1.3.src.rpm

i386:
NetworkManager-debuginfo-0.8.1-9.el6_1.3.i686.rpm
NetworkManager-devel-0.8.1-9.el6_1.3.i686.rpm
NetworkManager-glib-devel-0.8.1-9.el6_1.3.i686.rpm

ppc64:
NetworkManager-debuginfo-0.8.1-9.el6_1.3.ppc.rpm
NetworkManager-debuginfo-0.8.1-9.el6_1.3.ppc64.rpm
NetworkManager-devel-0.8.1-9.el6_1.3.ppc.rpm
NetworkManager-devel-0.8.1-9.el6_1.3.ppc64.rpm
NetworkManager-glib-devel-0.8.1-9.el6_1.3.ppc.rpm
NetworkManager-glib-devel-0.8.1-9.el6_1.3.ppc64.rpm

s390x:
NetworkManager-debuginfo-0.8.1-9.el6_1.3.s390.rpm
NetworkManager-debuginfo-0.8.1-9.el6_1.3.s390x.rpm
NetworkManager-devel-0.8.1-9.el6_1.3.s390.rpm
NetworkManager-devel-0.8.1-9.el6_1.3.s390x.rpm
NetworkManager-glib-devel-0.8.1-9.el6_1.3.s390.rpm
NetworkManager-glib-devel-0.8.1-9.el6_1.3.s390x.rpm

x86_64:
NetworkManager-debuginfo-0.8.1-9.el6_1.3.i686.rpm
NetworkManager-debuginfo-0.8.1-9.el6_1.3.x86_64.rpm
NetworkManager-devel-0.8.1-9.el6_1.3.i686.rpm
NetworkManager-devel-0.8.1-9.el6_1.3.x86_64.rpm
NetworkManager-glib-devel-0.8.1-9.el6_1.3.i686.rpm
NetworkManager-glib-devel-0.8.1-9.el6_1.3.x86_64.rpm

Red Hat Enterprise Linux Workstation (v. 6):

Source:
ftp://ftp.redhat.com/pub/redhat/linux/enterprise/6Workstation/en/os/SRPMS/NetworkManager-0.8.1-9.el6_1.3.src.rpm

i386:
NetworkManager-0.8.1-9.el6_1.3.i686.rpm
NetworkManager-debuginfo-0.8.1-9.el6_1.3.i686.rpm
NetworkManager-glib-0.8.1-9.el6_1.3.i686.rpm
NetworkManager-gnome-0.8.1-9.el6_1.3.i686.rpm

x86_64:
NetworkManager-0.8.1-9.el6_1.3.x86_64.rpm
NetworkManager-debuginfo-0.8.1-9.el6_1.3.i686.rpm
NetworkManager-debuginfo-0.8.1-9.el6_1.3.x86_64.rpm
NetworkManager-glib-0.8.1-9.el6_1.3.i686.rpm
NetworkManager-glib-0.8.1-9.el6_1.3.x86_64.rpm
NetworkManager-gnome-0.8.1-9.el6_1.3.x86_64.rpm

Red Hat Enterprise Linux Workstation Optional (v. 6):

Source:
ftp://ftp.redhat.com/pub/redhat/linux/enterprise/6Workstation/en/os/SRPMS/NetworkManager-0.8.1-9.el6_1.3.src.rpm

i386:
NetworkManager-debuginfo-0.8.1-9.el6_1.3.i686.rpm
NetworkManager-devel-0.8.1-9.el6_1.3.i686.rpm
NetworkManager-glib-devel-0.8.1-9.el6_1.3.i686.rpm

x86_64:
NetworkManager-debuginfo-0.8.1-9.el6_1.3.i686.rpm
NetworkManager-debuginfo-0.8.1-9.el6_1.3.x86_64.rpm
NetworkManager-devel-0.8.1-9.el6_1.3.i686.rpm
NetworkManager-devel-0.8.1-9.el6_1.3.x86_64.rpm
NetworkManager-glib-devel-0.8.1-9.el6_1.3.i686.rpm
NetworkManager-glib-devel-0.8.1-9.el6_1.3.x86_64.rpm

These packages are GPG signed by Red Hat for security.  Our key and 
details on how to verify the signature are available from
https://access.redhat.com/security/team/key/#package

7. References:

https://www.redhat.com/security/data/cve/CVE-2011-3364.html
https://access.redhat.com/security/updates/classification/#moderate

8. Contact:

The Red Hat security contact is <secalert@redhat.com>.  More contact
details at https://access.redhat.com/security/team/contact/

Copyright 2011 Red Hat, Inc.
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