-----BEGIN PGP SIGNED MESSAGE----- __________________________________________________________ The U.S. Department of Energy Computer Incident Advisory Capability ___ __ __ _ ___ / | /_\ / \___ __|__ / \ \___ __________________________________________________________ INFORMATION BULLETIN ActiveX Controls, Scriptlet.typlib & Eyedog, Vulnerabilities September 1, 1999 17:00 GMT Number J-064 ______________________________________________________________________________ PROBLEM: Microsoft has identified vulnerabilities in two ActiveX controls, Scriptlet.typlib & Eyedog. PLATFORM: Any PC using Microsoft(r) Internet Explorer 4.0 and 5.0. DAMAGE: A malicious web page administrator could take unauthorized action against a person who visits their web page. SOLUTION: Apply patch. ______________________________________________________________________________ VULNERABILITY Risk is high. This vulnerability could allow a malicious web ASSESSMENT: site operator to take inappropriate actions on the computer of a user who visits their web site. ______________________________________________________________________________ [ Start Microsoft Advisory ] Microsoft Security Bulletin (MS99-032) - -------------------------------------- Patch Available for "Scriptlet.typlib/Eyedog" Vulnerability Originally Posted: August 31, 1999 Summary ======= Microsoft has released a patch that eliminates security vulnerabilities in two ActiveX controls. The net effect of the vulnerabilities is that a web page could take unauthorized action against a person who visited it. Specifically, the web page would be able to do anything on the computer that the user could do. Frequently asked questions regarding this vulnerability can be found at http://www.microsoft.com/security/bulletins/MS99-032faq.asp Issue ===== This issue involves two ActiveX controls, Scriptlet.typlib and Eyedog. These controls are not in any way related to each other; their only relationship is that both are incorrectly marked as "safe for scripting" and can therefore be called from Internet Explorer. - Scriptlet.typlib is a control used by developers to generate Type Libraries for Windows Script Components. It is marked as "safe for scripting", but should not be because it allows local files to be created or modified. The patch removes the "safe for scripting" marking, thereby causing IE to request confirmation from the user before loading the control. - Eyedog is a control used by diagnostic software in Windows. It is marked as "safe for scripting", but should not be because it allows registry information to be queried and machine characteristics to be gathered. In addition, one of the control's methods is vulnerable to a buffer overrun attack. The patch sets the so-called "kill bit", which prevents it from loading within IE. Affected Software Versions ========================== - Microsoft(r) Internet Explorer 4.0 and 5.0 Patch Availability ================== - ftp://ftp.microsoft.com/peropsys/IE/IE-Public/ Fixes/usa/Eyedog-fix/ NOTE: Circa September 7, 1999, the patch also will be available through WindowsUpdate. More Information ================ Please see the following references for more information related to this issue. - Microsoft Security Bulletin MS99-032: Frequently Asked Questions, http://www.microsoft.com/security/bulletins/MS99-032faq.asp. - Microsoft Knowledge Base (KB) article Q240308, Update Available for Scriptlet.typlib/Eyedog Security Vulnerability, http://support.microsoft.com/support/kb/articles/q240/3/08.asp. - Microsoft Knowledge Base (KB) article Q240797, How to Keep an ActiveX Control from Running in Internet Explorer, http://support.microsoft.com/support/kb/articles/q240/7/97.asp. - Microsoft Security Advisor web site, http://www.microsoft.com/security/default.asp. (Note: It may take 24 hours from the original posting of this bulletin for the KB articles to be visible.) Obtaining Support on this Issue =============================== This is a fully supported patch. Information on contacting Microsoft Technical Support is available at http://support.microsoft.com/support/contact/default.asp. Acknowledgments =============== Microsoft acknowledges Georgi Guninski, independent consultant, for reporting the "Scriptlet.typlib" vulnerability to us, and Shane Hird of Australia, Adrian O'Neill and Richard Smith for reporting the "Eyedog" vulnerability to us. Revisions ========= - August 31, 1999: Bulletin Created. - ---------------------------------------------------------------------- THE INFORMATION PROVIDED IN THE MICROSOFT KNOWLEDGE BASE IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND. MICROSOFT DISCLAIMS ALL WARRANTIES, EITHER EXPRESS OR IMPLIED, INCLUDING THE WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. IN NO EVENT SHALL MICROSOFT CORPORATION OR ITS SUPPLIERS BE LIABLE FOR ANY DAMAGES WHATSOEVER INCLUDING DIRECT, INDIRECT, INCIDENTAL, CONSEQUENTIAL, LOSS OF BUSINESS PROFITS OR SPECIAL DAMAGES, EVEN IF MICROSOFT CORPORATION OR ITS SUPPLIERS HAVE BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. SOME STATES DO NOT ALLOW THE EXCLUSION OR LIMITATION OF LIABILITY FOR CONSEQUENTIAL OR INCIDENTAL DAMAGES SO THE FOREGOING LIMITATION MAY NOT APPLY. (c) 1999 Microsoft Corporation. All rights reserved. Terms of Use. ******************************************************************* You have received this e-mail bulletin as a result of your registration to the Microsoft Product Security Notification Service. You may unsubscribe from this e-mail notification service at any time by sending an e-mail to MICROSOFT_SECURITY-SIGNOFF-REQUEST@ANNOUNCE.MICROSOFT.COM The subject line and message body are not used in processing the request, and can be anything you like. For more information on the Microsoft Security Notification Service please visit http://www.microsoft.com/security/services/bulletin.asp. For security-related information about Microsoft products, please visit the Microsoft Security Advisor web site at http://www.microsoft.com/security. [ End Microsoft Advisory ] ______________________________________________________________________________ CIAC wishes to acknowledge Microsoft Corp. for the information contained in this bulletin. ______________________________________________________________________________ CIAC, the Computer Incident Advisory Capability, is the computer security incident response team for the U.S. Department of Energy (DOE) and the emergency backup response team for the National Institutes of Health (NIH). CIAC is located at the Lawrence Livermore National Laboratory in Livermore, California. 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LAST 10 CIAC BULLETINS ISSUED (Previous bulletins available from CIAC) J-054: Unauthorized Access to IIS Servers through ODBC Data Access with RDS J-055: IBM AIX Vulnerability in ptrace() system call J-056: Microsoft "Encapsulated SMTP Address" Vulnerability J-057: Windows NT(r) Terminal Servers DOS Vulnerability J-058: Microsoft "Malformed HTTP Request Header" Vulnerability J-059: IBM AIX (pdnsd) Buffer Overflow Vulnerability J-060: Microsoft Office 'ODBC' Vulnerabilities J-061: Lotus Notes Domino Server Denial of Service Attacks J-062: Netscape Enterprise and FastTrack Web Servers Buffer Overflow J-063: Domain Name System (DNS) Denial of Service (DoS) Attacks -----BEGIN PGP SIGNATURE----- Version: 4.0 Business Edition iQCVAwUBN86psrnzJzdsy3QZAQH80QQA+5qsULNrp15mrB4+rWXFAKbxmYVmMZjy rnNY3UCAI/xFW63Yy8/Zap7ZhhhW9x8Am4bE1Jd1KFZXLfDeego4+63IjZKTLLr9 hK9z0fJCIRapmFQ4YZpTiWDGpb2N/e+IrtJPOlrLFtWRfaKLS0G7JuXKP+/DrMA3 qKui9K6tL5I= =KyEf -----END PGP SIGNATURE-----