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Category:   Application (Generic)  >   nspluginwrapper Vendors:   nspluginwrapper.org
(Red Hat Issues Fix) nspluginwrapper NPNVprivateModeBool Variable Processing Flaw Lets Remote Users Deny Service
SecurityTracker Alert ID:  1027758
SecurityTracker URL:  http://securitytracker.com/id/1027758
CVE Reference:   CVE-2011-2486   (Links to External Site)
Date:  Nov 14 2012
Impact:   Denial of service via network
Fix Available:  Yes  Vendor Confirmed:  Yes  

Description:   A vulnerability was reported in nspluginwrapper. A remote user can cause denial of service conditions.

nspluginwrapper does not forward the NPNVprivateModeBool variable. Certain applications using the wrapper may crash and require a restart.

Impact:   A remote user may be able to cause the target user's application to crash.
Solution:   Red Hat has issued a fix.

The Red Hat advisory is available at:

https://rhn.redhat.com/errata/RHSA-2012-1459.html

Vendor URL:  nspluginwrapper.org/ (Links to External Site)
Cause:   State 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.
Nov 14 2012 nspluginwrapper NPNVprivateModeBool Variable Processing Flaw Lets Remote Users Deny Service



 Source Message Contents

Subject:  [RHSA-2012:1459-01] Low: nspluginwrapper security and bug fix update

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

Synopsis:          Low: nspluginwrapper security and bug fix update
Advisory ID:       RHSA-2012:1459-01
Product:           Red Hat Enterprise Linux
Advisory URL:      https://rhn.redhat.com/errata/RHSA-2012-1459.html
Issue date:        2012-11-13
CVE Names:         CVE-2011-2486 
=====================================================================

1. Summary:

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

The Red Hat Security Response Team has rated this update as having low
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 HPC Node Optional (v. 6) - x86_64
Red Hat Enterprise Linux Server (v. 6) - i386, ppc64, x86_64
Red Hat Enterprise Linux Workstation (v. 6) - i386, x86_64

3. Description:

nspluginwrapper is a utility which allows 32-bit plug-ins to run in a
64-bit browser environment (a common example is Adobe's browser plug-in for
presenting proprietary Flash files embedded in web pages). It includes the
plug-in viewer and a tool for managing plug-in installations and updates.

It was not possible for plug-ins wrapped by nspluginwrapper to discover
whether the browser was running in Private Browsing mode. This flaw could
lead to plug-ins wrapped by nspluginwrapper using normal mode while they
were expected to run in Private Browsing mode. (CVE-2011-2486)

This update also fixes the following bug:

* When using the Adobe Reader web browser plug-in provided by the
acroread-plugin package on a 64-bit system, opening Portable Document
Format (PDF) files in Firefox could cause the plug-in to crash and a black
window to be displayed where the PDF should be. Firefox had to be restarted
to resolve the issue. This update implements a workaround in
nspluginwrapper to automatically handle the plug-in crash, so that users
no longer have to keep restarting Firefox. (BZ#869554)

All users of nspluginwrapper are advised to upgrade to these updated
packages, which upgrade nspluginwrapper to upstream version 1.4.4, and
correct these issues. After installing the update, Firefox must be
restarted for the changes 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/knowledge/articles/11258

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

715384 - CVE-2011-2486 nspluginwrapper: NPNVprivateModeBool variable not forwarded

6. Package List:

Red Hat Enterprise Linux Desktop (v. 6):

Source:
ftp://ftp.redhat.com/pub/redhat/linux/enterprise/6Client/en/os/SRPMS/nspluginwrapper-1.4.4-1.el6_3.src.rpm

i386:
nspluginwrapper-1.4.4-1.el6_3.i686.rpm
nspluginwrapper-debuginfo-1.4.4-1.el6_3.i686.rpm

x86_64:
nspluginwrapper-1.4.4-1.el6_3.i686.rpm
nspluginwrapper-1.4.4-1.el6_3.x86_64.rpm
nspluginwrapper-debuginfo-1.4.4-1.el6_3.i686.rpm
nspluginwrapper-debuginfo-1.4.4-1.el6_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/nspluginwrapper-1.4.4-1.el6_3.src.rpm

x86_64:
nspluginwrapper-1.4.4-1.el6_3.i686.rpm
nspluginwrapper-1.4.4-1.el6_3.x86_64.rpm
nspluginwrapper-debuginfo-1.4.4-1.el6_3.i686.rpm
nspluginwrapper-debuginfo-1.4.4-1.el6_3.x86_64.rpm

Red Hat Enterprise Linux Server (v. 6):

Source:
ftp://ftp.redhat.com/pub/redhat/linux/enterprise/6Server/en/os/SRPMS/nspluginwrapper-1.4.4-1.el6_3.src.rpm

i386:
nspluginwrapper-1.4.4-1.el6_3.i686.rpm
nspluginwrapper-debuginfo-1.4.4-1.el6_3.i686.rpm

ppc64:
nspluginwrapper-1.4.4-1.el6_3.ppc.rpm
nspluginwrapper-debuginfo-1.4.4-1.el6_3.ppc.rpm

x86_64:
nspluginwrapper-1.4.4-1.el6_3.i686.rpm
nspluginwrapper-1.4.4-1.el6_3.x86_64.rpm
nspluginwrapper-debuginfo-1.4.4-1.el6_3.i686.rpm
nspluginwrapper-debuginfo-1.4.4-1.el6_3.x86_64.rpm

Red Hat Enterprise Linux Workstation (v. 6):

Source:
ftp://ftp.redhat.com/pub/redhat/linux/enterprise/6Workstation/en/os/SRPMS/nspluginwrapper-1.4.4-1.el6_3.src.rpm

i386:
nspluginwrapper-1.4.4-1.el6_3.i686.rpm
nspluginwrapper-debuginfo-1.4.4-1.el6_3.i686.rpm

x86_64:
nspluginwrapper-1.4.4-1.el6_3.i686.rpm
nspluginwrapper-1.4.4-1.el6_3.x86_64.rpm
nspluginwrapper-debuginfo-1.4.4-1.el6_3.i686.rpm
nspluginwrapper-debuginfo-1.4.4-1.el6_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-2011-2486.html
https://access.redhat.com/security/updates/classification/#low

8. Contact:

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

Copyright 2012 Red Hat, Inc.
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