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SYM09-001
15 January, 2009
Symantec AppStream ActiveX Unauthorized Access

Revision History
None

Severity
High

Remote AccessYes
Local AccessNo
Authentication RequiredNo
Exploit publicly availableNo


Overview
Vulnerabilities were reported in an ActiveX control that Symantec痴 AppStream 5.2.x Client installs. Exploitation of this issue could possibly lead to unauthorized information disclosure, system information corruption or potentially allow arbitrary code execution in the context of the user痴 browser. Successful exploitation would require user interaction.

Products Affected
ProductVersionBuildSolution
Symantec AppStream Client5.2.xAll5.2.2 SP3 MP1


Details
Symantec engineers discovered a vulnerable ActiveX control, LaunchObj, in Symantec痴 AppStream 5.2.x client during an internal review. CERT also discovered this vulnerable control and reported their findings to Symantec.

Although this control was not intended to be called by an unauthorized server, it failed to properly validate external input. If called by a malicious user able to successfully masquerade as a valid server, this lack of proper validation could potentially allow download of arbitrary code on a client system. This could result in a browser crash or allow unauthorized access to add, modify, overwrite or corrupt existing files on the targeted system. Unauthorized access to the vulnerable control could result in possible arbitrary code execution in the context of the client. An attacker would have to effectively entice a user to download and execute code via a malicious web site that could effectively call this vulnerable control.

Symantec response
Symantec product engineers have developed and released solutions for this issue through Symantec's support download locations as indicated.

Symantec recommends all customers apply the latest available updates to protect against threats of this nature.
Symantec knows of no exploitation of or adverse customer impact from these issues.
The update listed for affected products is available from the following location:

http://www.symantec.com/business/software-virtualization-solution-professional

Best Practice
As part of normal best practices, Symantec strongly recommends a multi-layered approach to security

  • Restrict access to administration or management systems to privileged users.
  • Restrict remote access, if it is required, to trusted/authorized systems only.
  • Run under the principle of least privilege where possible to limit the impact of potential exploits.
  • Keep all operating systems and applications updated with the latest vendor patches.
  • Follow a multi-layered approach to security. Run both firewall and antivirus applications, at a minimum, to provide multiple points of detection and protection to both inbound and outbound threats.
  • Keep all operating systems and applications updated with the latest vendor patches.
  • Users should be cautious of mysterious attachments and executables delivered via email and be cautious of browsing unknown/untrusted websites or opening unknown/untrusted URL links.

Credit
Symantec thanks Will Dormann at CERT for reporting this finding and coordinating closely with Symantec as we resolved the issue.

References
Security Focus, http://www.securityfocus.com, has assigned a Bugtraq ID (BID) 33247 to this issue for inclusion in the Security Focus vulnerability database.

This issue is a candidate for inclusion in the Common Vulnerabilities and Exposures (CVE) list (http://cve.mitre.org). The CVE initiative has assigned CVE-2008-4388 to this issue.


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 the principles of responsible disclosure. Symantec also subscribes to the vulnerability disclosure guidelines outlined by the National Infrastructure Advisory Council (NIAC).

Please contact secure@symantec.com if you feel you have discovered a security issue in a Symantec product. A Symantec Product Security team member will contact you regarding your submission. 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 end of this message.

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-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.

Disclaimer
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.


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 the principles of responsible disclosure. Symantec also subscribes to the vulnerability disclosure guidelines outlined by the National Infrastructure Advisory Council (NIAC).

Please contact secure@symantec.com if you feel you have discovered a security issue in a Symantec product. A Symantec Product Security team member will contact you regarding your submission. 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 end of this message.

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-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.

Disclaimer
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: Tuesday, 12-Feb-13 02:59:34