Hash: SHA1

             AUSCERT External Security Bulletin Redistribution

                    ESB-2009.0265 -- [Win][RedHat][OSX]
            Symantec pcAnywhere Format String Denial of Service
                               23 March 2009


        AusCERT Security Bulletin Summary

Product:              Symantec pcAnywhere
Publisher:            Symantec
Operating System:     Windows
                      Mac OS X
                      Red Hat Linux
Impact:               Denial of Service
Access:               Existing Account
CVE Names:            CVE-2009-0538

Original Bulletin:    

- --------------------------BEGIN INCLUDED TEXT--------------------

March 17, 2009
Symantec pcAnywhere Format String Denial of Service

Revision History


Remote Access	                No
Local Access	                Yes
Authentication Required	        No
Exploit publicly available	No

Symantec pcAnywhere is susceptible to a format string vulnerability. An 
authorized local user may potentially leverage this to crash the 
pcAnywhere application, leading to a denial of service.

Affected Product(s)
Product	                Version	                Build	Solution
Symantec pcAnywhere	12.0, 12.1, 12.5	All	Upgrade to 12.5 SP1

Note: Only the versions listed above are supported. Customers running 
non-supported versions should upgrade to the above mentioned non-vulnerable 
Layered Defense informed Symantec of a format string vulnerability in 
Symantec pcAnywhere. This issue can be exploited by a malicious user to 
crash the application causing a denial of service. Successful exploitation 
requires local machine access.

Symantec Response
Symantec engineers verified this issue exists on those supported products 
identified above. Product updates are available for supported affected 

Symantec is not aware of any customers impacted by this issue, or of any 
attempts to exploit it.

Information on downloading and applying the upgrade is available from the 
following locations:

For Enterprise, Small & Mid-Sized Business (SMB) - Download the update 
from your normal support location


or, use the LiveUpdate option, if authorized, to install this update

Home and Home Office -

pcAnywhere users who regularly run LiveUpdate should automatically receive 
an updated (non-vulnerable) version. To ensure all available updates have 
been applied, users can run a manual LiveUpdate as follows:

    * Open the Symantec pcAnywhere application
    * Click LiveUpdate
    * Run LiveUpdate until all available product updates are downloaded and 
    * A system reboot may be required before the update takes affect 

Best Practices

As part of normal best practices, Symantec strongly recommends:

    * Restrict access to administration or management systems to privileged 
    * Restrict remote access, if required, to trusted/authorized systems 
    * 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 patches.
    * 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 


SecurityFocus, http://www.securityfocus.com, has assigned BID 33845 to this 

The Common Vulnerabilities and Exposures (CVE), http://cve.mitre.org/, 
initiative has assigned CVE Candidate number CVE-2009-0538 to this issue.

Symantec would like to thank Deral Heiland with Layered Defense for 
reporting this issue and coordinating with us while Symantec resolved it.

Symantec takes the security and proper functionality of its products very 
seriously. As founding members of the Organization for Internet Safety 
(OISafety), Symantec follows the principles of responsible disclosure. 
Symantec also subscribes to the vulnerability guidelines outlined by the 
National Infrastructure Advisory Council (NIAC). Please contact 
secure@symantec.com if you feel you have discovered a potential or actual 
security issue with a Symantec product. A Symantec Product Security team 
member will contact you regarding your submission.

Symantec has developed a Product Vulnerability Handling Process document 
outlining the process we follow in addressing suspected vulnerabilities in 
our products. We support responsible disclosure of all vulnerability 
information in a timely manner to protect Symantec customers and the 
security of the Internet as a result of vulnerability. This document is 
available from the location provided below.

Symantec strongly recommends using encrypted email for reporting 
vulnerability information to secure@symantec.com. The Symantec Product 
Security PGP key can be obtained from the location provided below.
Symantec-Product-Vulnerability-Response Symantec Vulnerability Response 
Policy 	Symantec Product Vulnerability Management PGP Key Symantec Product 
Vulnerability Management PGP Key

Copyright (c) 2009 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 Security Response.
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 Security Response, 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 companies/owners.

Last modified on: Monday, 16-Mar-09 21:08:33

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