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April 21, 2006
Symantec Scan Engine Multiple Vulnerabilities

Revision History

Risk Impact

Remote AccessYes
Local AccessNo
Authentication RequiredNo
Exploit publicly availableNo

Three vulnerabilities have been discovered in the Symantec Scan Engine. Symantec Scan Engine is a TCP/IP server and programming interface that enables third parties to incorporate support for Symantec content scanning technologies into their proprietary applications. This gateway-level product should not be confused with Symantecís desktop product.

The Symantec Scan Engine fails to properly authenticate web-based user logins. Anyone with knowledge of the underlying communication mechanism can control the Scan Engine server.

Symantec Scan Engine uses a static private DSA key for SSL communications. This key cannot be changed by end users and is easily extracted. This opens the product to a potential man-in-the-middle attack.

There is a vulnerability in Symantec Scan Engine that allows unauthenticated remote users to download any file located under the Symantec Scan Engine installation directory. For instance, the configuration file, the scanning logs, and the current virus definitions can all be accessed by any remote user using regular or specially crafted HTTP requests.

Products Affected
ProductVersionUpdate To
Symantec Scan Engine5.05.1

Symantec Response
Symantec Engineers have verified these issues and have added fixes to the latest product update (5.1). Symantec strongly recommends all customers immediately apply the latest updates for their supported product versions to protect against these types of threats. Symantec is unaware of any adverse customer impact from these issues. There are no known publicly available exploits.

Upgrade Information
Symantec Scan Engine updates are available through the Platinum Support Web Site for Platinum customers or through the FileConnect - Electronic Software Distribution web site for all licensed users.

Symantec would like to thank Rapid7 for reporting this issue and for providing coordination while Symantec resolved it.

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

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Initial Post on: Friday, 21-Apr-06 12:40:00
Last modified on: Friday, 21-Apr-2006 12:51:35 PDT