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May 10, 2006
Symantec Enterprise Firewall NAT/HTTP Proxy internal IP leakage

Revision History
May 10, 2006 - Corrected bundle information

Very Low

Remote AccessYes
Local AccessNo
Authentication RequiredNo
Exploit publicly availableNo

An information leak has been discovered in the HTTP proxy of the Symantec Enterprise Firewall and Symantec Gateway Security products. In response to specific http requests, the firewall may reveal internal addresses otherwise hidden by Network Address Translation (NAT).

Products Affected
Symantec Gateway Security 5000 Series2.0.1Bundle E
3.0Bundle B
Symantec Enterprise Firewall8.0Bundle E

Products Not Affected
Symantec Gateway Security 1600 appliance3.0
Symantec Gateway Security 5000 Series3.0.1
Symantec Gateway Security 400 SeriesAll
Symantec Gateway Security 300 SeriesAll

Symantec Response
Symantec has verified the issue and fixed the exposure in available product updates. Symantec recommends customers apply the latest updates for their supported product versions.

Product Updates are available from the Symantec web site:

Symantec would like to thank Bernhard Mueller for reporting this issue to Symantec.

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.

PDF Symantec Vulnerability Response Policy PGP Symantec Product Vulnerability Management PGP Key

Copyright © 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.

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Initial Post on: Wednesday, 10-May-06 9:00:00
Last modified on: Friday, 12-May-06 11:49:23