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

Revision History
Added CVE reference
Added Symantec Mail Security 4.1.x to list of unaffected products

Risk Impact
Low

Remote AccessYes
Local AccessNo
Authentication RequiredNo
Exploit publicly availableNo

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

Vulnerable Products
ProductsVersionsSolution
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.

ProductsVersions
Symantec Mail Security for MSE All
Symantec Brightmail AntiSpam All
Symantec Mail Security for SMTP 4.1.x
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.

CVE
This issue is a candidate for inclusion in the Common Vulnerabilities and Exposures (CVE) list (http://cve.mitre.org), which standardizes names for security problems. The CVE initiative has assigned CVE-2007-1792 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


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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.

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Initial Post on: Tuesday, 26-Jun-07 12:00:00
Last modified on: Wednesday, 15-Aug-07 22:41:29