[NEWS] Blue Coat Systems (formerly CacheFlow) Cross Site Scripting Vulnerability

From: support@securiteam.com
Date: 09/03/02 

From: support@securiteam.com
To: list@securiteam.com
Date: Tue,  3 Sep 2002 19:35:49 +0200 (CEST)

The following security advisory is sent to the securiteam mailing list, and can be found at the SecuriTeam web site: http://www.securiteam.com
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  Blue Coat Systems (formerly CacheFlow) Cross Site Scripting Vulnerability
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SUMMARY

A security vulnerability in Blue Coast Systems has been found. The
vulnerability allows attackers to cause the server to return malicious
HTML and JavaScript code because the products Blue Coast Systems ships
improperly filters our dangerous characters.

DETAILS

Vulnerable systems:
 * Client Accelerators (CA) version 4.1.06 and earlier
 * Server Accelerators (SA) version 4.1.06 and earlier
 * Security Gateways (SG) version 2.1.02 and earlier

It is possible to send HTML special characters (such as "<", ">" and "&")
to the client browser via the appliance's error pages.

Impact:
Users may involuntarily invoke a client side script.

Suggested solution:
Client Accelerators should upgrade to CA 4.1.07 or higher.
Server Accelerators should upgrade to SA 4.1.07 or higher.
Security Gateways should upgrade to SG 2.1.03 or higher.

Alternative solutions:
Client Accelerators (CA) 3.1.XX
      Upgrade the custom error pages.
      Download the updated error pages file and install instructions at:
<http://download.cacheflow.com/release/CA/3.1.00-docs/v3.1-error-pages.zip> http://download.cacheflow.com/release/CA/3.1.00-docs/v3.1-error-pages.zip

CA 4.0.XX
      Upgrade the custom error pages.
      Download the updated error pages file and install instructions at
<http://download.cacheflow.com/release/CA/4.0.00-docs/CA4-error-pages.zip>
http://download.cacheflow.com/release/CA/4.0.00-docs/CA4-error-pages.zip

Server Accelerators (SA) 4.0.XX
      Upgrade the custom error pages.
      Download the updated error pages file and install instructions at
http://download.cacheflow.com/release/SA/4.0.00-docs/SA4-error-pages.zip

ADDITIONAL INFORMATION

The information has been provided by <mailto:support@bluecoat.com> Blue
Coat Systems (formerly CacheFlow) Support Department.

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