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                                    CERT-Renater

                         Note d'Information No. 2007/VULN271
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DATE                      : 28/06/2007

HARDWARE PLATFORM(S)      : /

OPERATING SYSTEM(S)       : Systems running Symantec Mail Security for SMTP.

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SYM07-014
June 26, 2007
Symantec Mail Security for SMTP Executable Attachment Parsing Denial
of Service

Revision History
None

Risk Impact
Low

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

Overview
A denial of service has been discovered in Symantec Mail Security for
SMTP when parsing Executable Attachments.

Vulnerable Products

Products Versions Solution
Symantec Mail Security for SMTP 5.0.0 Upgrade to 5.0.1 and apply patch
181
5.0.1 Apply Patch 181
Symantec Mail Security Appliance 5.0.x Update to 5.0.0-36 or later

Not Affected
The following products are not affected by this vulnerability.

Products                         Versions
Symantec Mail Security for MSE     All
Symantec Brightmail AntiSpam       All
Symantec Mail Security Appliance  4.1.x

Details
Symantec Mail Security for SMTP fails to properly check for boundary
errors when parsing executable attachments. This issue can lead to a
Denial of Service.

Symantec response
Symantec has released a downloadable updates for this issue available
through the Platinum Support Web Site for Platinum customers or
through the FileConnect -Electronic Software Distribution web site
for all licensed users.
Users of Symantec Mail Security for SMTP 5.0.0 are encouraged to
upgrade to 5.0.1 and then download and apply the update.
To date, Symantec is not aware of any reported attempts to exploit
this vulnerability.

Credit
Symantec would like to thank Dyon Balding of Secunia for reporting
this issue to Symantec, and working with us on the resolution.
      ___________________________________________________________

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) 2007 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.
Initial Post on: Tuesday, 26-Jun-07 12:00:00
Last modified on: Tuesday, 26-Jun-07 21:30:05

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