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             AUSCERT External Security Bulletin Redistribution

  Security Advisories Relating to Symantec Products - Symantec Workspace
            Virtualization Local Kernel Elevation of Privilege
                               5 August 2013


        AusCERT Security Bulletin Summary

Product:           Symantec Workspace Virtualization
Publisher:         Symantec
Operating System:  Windows Server 2008
                   Windows Server 2008 R2
                   Windows Server 2003
Impact/Access:     Increased Privileges -- Existing Account
Resolution:        Patch/Upgrade
CVE Names:         CVE-2013-4679  

Original Bulletin: 

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Security Advisories Relating to Symantec Products - Symantec Workspace 
Virtualization Local Kernel Elevation of Privilege


August 1, 2013




CVSS2		Impact	Exploitability	CVSS2 Vector
Base Score
Symantec Workspace Virtualization Local Kernel EoP  - Medium
6.6		10.0	2.7		AV:L/AC:M/AU:S/C:C/I:C/A:C

Exploit Publicly Available:  Yes


Symantec's Workspace Virtualization, when activated/enabled on a client, is 
susceptible to a local access kernel elevation of privilege.  The application 
fails to do sufficient bounds checking when passing user input to the 
underlying operating system. This issue could potentially allow an 
authenticated but non-privileged local user to run arbitrary code with 
elevated privileges on the underlying system.  

Exploit code targeting this issue is public.

Affected Products

Product			Version		Build		Solution(s)
Symantec Workspace 	6.x		All prior to 	Symantec Workspace 
Virtualization  			6.4.1895.0	Virtualization
Non-Affected Products

Product			Version		Build
Symantec Workspace and 	All
Streaming		prior

Symantec is aware of a publicly posted local kernel elevation of privilege 
exploit against Symantec's Workspace Virtualization application.  The 
application does not do sufficient bounds checking prior to passing user data 
to the operating system. 

NOTE: Symantec Workspace Virtualization is in a vulnerable state ONLY when at 
least one virtual application layer is enabled on the client system. A virtual 
application running in the active layer is not required but, the Symantec 
Workspace Virtualization application must be in the active mode.  Symantec 
Workspace Virtualization application installed on a client but not 
activated/enabled is NOT vulnerable to this issue.

An authorized but unprivileged user with a local account could attempt to run 
malicious code of their choosing on the host client system.  A non-authorized 
attacker would need to acquire unauthorized access to a local client account or
be able to entice an authorized user to download malicious code to their system
to execute when the application is active. Successful exploitation could 
potentially result in a system crash, access to unauthorized system information
or possible elevation of privilege on the system.

Symantec Response

Symantec reviewed and validated this issue as impacting Symantec Workspace 
Virtualization.  Symantec strongly recommends customers upgrade to Symantec 
Workspace Virtualization version 6.4.1953.0 at their earliest opportunity to 
protect from any attempts to target this issue.

Symantec is not aware of exploitation of or adverse customer impact from this 

Update Information

Symantec Workspace Virtualization 6.4.1953.0 is available through customers' 
normal download locations, 

Best Practices
As part of normal best practices, Symantec strongly recommends that customers:

     Restrict access of administration or management systems to privileged 

     Restrict remote access, if required, to trusted/authorized systems only.
     Run under the principle of least privilege where possible to limit the 
     impact of exploit by threats.
     Keep all operating systems and applications updated with the latest vendor 
     Follow a multi-layered approach to security. Run both firewall and 
     anti-malware applications, at a minimum, to provide multiple points of 
     detection and protection to both inbound and outbound threats.
     Deploy network and host-based intrusion detection systems to monitor 
     network traffic for signs of anomalous or suspicious activity. This may 
     aid in detection of attacks or malicious activity related to exploitation 
     of latent vulnerabilities


BID: Security Focus, http://www.securityfocus.com, has assigned a Bugtraq ID 
(BID) to this issue for inclusion in the Security Focus vulnerability database.

CVE: The issue is a candidate for inclusion in the CVE list 
(http://cve.mitre.org), which standardizes names for security problems.

CVE		BID		Description
CVE-2013-4679	61349		Symantec Workspace Virtualization Local Kernel 

Symantec takes the security and proper functionality of our products very 
seriously. As founding members of the Organization for Internet Safety 
(OISafety), Symantec supports and follows responsible disclosure guidelines.

Please contact secure@symantec.com if you feel you have discovered a security
issue in a Symantec product. A member of the Symantec Product Security team 
will contact you regarding your submission to coordinate any required response.
Symantec strongly recommends using encrypted email for reporting vulnerability 
information to secure@symantec.com. The Symantec Product Security PGP key can 
be found at the location below.

Symantec has developed a Product Vulnerability Response document outlining the 
process we follow in addressing suspected vulnerabilities in our products. This
 document is available below.

Symantec Vulnerability Response Policy	

Symantec Product Vulnerability Management PGP Key

Copyright (c) by Symantec Corp.
Permission to redistribute this alert electronically is granted as long as it 
is not edited in any way unless authorized by Symantec Product Security. 
Reprinting the whole or part of this alert in any medium other than 
electronically requires permission from secure@symantec.com


The information in the advisory is believed to be accurate at the time of 
publishing based on currently available information. Use of the information 
constitutes acceptance for use in an AS IS condition. There are no warranties with
regard to this information. Neither the author nor the publisher accepts any 
liability for any direct, indirect, or consequential loss or damage arising from
use of, or reliance on, this information.
Symantec, Symantec products, Symantec Product Security, and secure@symantec.com 
are registered trademarks of Symantec Corp. and/or affiliated companies in the 
United States and other countries. All other registered and unregistered 
trademarks represented in this document are the sole property of their respective

* Signature names may have been updated to comply with an updated IPS Signature
naming convention. See 
for more information.

Last modified on: August 1, 2013

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