[1][USEMAP] [2][USEMAP] [3][LINK] Allaire Security Bulletin (ASB00-11) Microsoft: Procedure Available to Eliminate "Server-Side Image Map Components" Vulnerability Originally Posted: May 8, 2000 Last Updated: May 8, 2000 Summary A procedure is available to eliminate a security vulnerability affecting several web server products. The vulnerability could potentially allow a malicious web site visitor to perform actions that the system permissions authorize him to perform, but which he previously may have had no means of actually carrying out. This is not a problem with ColdFusion Server itself, but it is an issue that can affect ColdFusion users. Allaire recommends that customers follow the instructions posted on the Microsoft Web site to address this issue. Issue This issue is clearly explained in the Microsoft Security Bulletin: "The FrontPage 97 and 98 Server Extensions include two components, Htimage.exe and Imagemap.exe, that provide CERN- and NCSA-compliant server side image mapping support, respectively, for legacy browsers. Both components contain unchecked buffers that could be used to run arbitrary code. Although part of the Server Extensions, these components also install as part of several other web server products." Further: "The risk posed by this vulnerability is significantly restricted by the fact that the affected components run "out of process" and in the security context of the user. Thus, there is no capability through this vulnerability to cause either the web service or the server itself to crash, nor is there an opportunity to run code in an elevated security context. However, it still could be possible for a malicious user to perform actions that, though permitted, he would otherwise be unable to take because the functionality was not exposed via a web page or script." Affected Software Versions * FrontPage 97 Server Extensions, which ship as part of FrontPage 97 * FrontPage 98 Server Extensions, which ship as part of FrontPage 98 * Microsoft(r) Windows NT(r) 4.0 Option Pack, which is the primary distribution mechanism for Internet Information Server 4.0 * Personal Web Server 4.0, which ships as part of Windows(r) 95 and 98 What Allaire is Doing This is not an Allaire product. We are recommending that customers reference the information at Microsoft's site to address this issue. What Customers Should Do There is a patch available to correct this problem. It is detailed in the following Microsoft Security Bulletin (MS00-028): [4]http://www.microsoft.com/technet/security/bulletin/ms00-028.asp Please note: this issue and patch may not be required for all users. Allaire customers should review all material in the Microsoft Security Bulletin and related documents carefully before applying the patch. As always, customers should test patch changes in a testing environment before modifying production servers. Revisions May 8, 2000 -- Bulletin first created. Reporting Security Issues Allaire is committed to addressing security issues and providing customers with the information on how they can protect themselves. If you identify what you believe may be a security issue with an Allaire product, please send an email to secure@allaire.com. We will work to appropriately address and communicate the issue. Receiving Security Bulletins When Allaire becomes aware of a security issue that we believe significantly affects our products or customers, we will notify customers when appropriate. Typically this notification will be in the form of a security bulletin explaining the issue and the response. Allaire customers who would like to receive notification of new security bulletins when they are released can sign up for our security notification service. For additional information on security issues at Allaire, please visit the Security Zone at: [5]http://www.allaire.com/security THE INFORMATION PROVIDED BY ALLAIRE IN THIS BULLETIN IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND. ALLAIRE DISCLAIMS ALL WARRANTIES, EITHER EXPRESS OR IMPLIED, INCLUDING THE WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. 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