-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Technical Cyber Security Alert TA05-284A Microsoft Windows, Internet Explorer, and Exchange Server Vulnerabilities Original release date: October 11, 2005 Last revised: -- Source: US-CERT Systems Affected * Microsoft Windows * Microsoft Internet Explorer * Microsoft Exchange Server For more complete information, refer to the Microsoft Security Bulletin Summary for October 2005. Overview Microsoft has released updates that address critical vulnerabilities in Windows, Internet Explorer, and Exchange Server. Exploitation of these vulnerabilities could allow a remote, unauthenticated attacker to execute arbitrary code or cause a denial of service on an affected system. I. Description Microsoft Security Bulletins for October 2005 address vulnerabilities in Windows and Internet Explorer. Further information is available in the following US-CERT Vulnerability Notes: VU#214572 - Microsoft Plug and Play fails to properly validate user supplied data Microsoft Plug and Play contains a flaw in the handling of message buffers that may result in local or remote arbitrary code execution or denial-of-service conditions. (CAN-2005-2120) VU#883460 - Microsoft Collaboration Data Objects buffer overflow A buffer overflow in Microsoft Collaboration Data Objects may allow a remote, unauthenticated attacker to execute arbitrary code on a vulnerable system. (CAN-2005-1987) VU#922708 - Microsoft Windows Shell fails to handle shortcut files properly Microsoft Windows Shell does not properly handle some shortcut files and may permit arbitrary code execution when a specially-crafted file is opened. (CAN-2005-2122) VU#995220 - Microsoft DirectShow buffer overflow A buffer overflow in Microsoft DirectShow may allow a remote, unauthenticated attacker to execute arbitrary code on a vulnerable system. (CAN-2005-2128) VU#180868 - Microsoft Distributed Transaction Coordinator vulnerable to buffer overflow via specially crafted network message Microsoft Distributed Transaction Coordinator (MSDTC) may be vulnerable to a flaw that allows remote, unauthenticated attackers to execute arbitrary code. (CAN-2005-2119) VU#950516 - Microsoft COM+ contains a memory management flaw Microsoft COM+ contains a vulnerability due to a memory management flaw that may allow an attacker to take complete control of an affected system. (CAN-2005-1978) VU#959049 - Several COM objects cause memory corruption in Microsoft Internet Explorer Microsoft Internet Explorer will initialize COM objects that were not intended to be used in the web browser. Several COM objects have been identified that may allow an attacker to execute arbitrary code or crash Internet Explorer. (CAN-2005-2127) VU#680526 - Microsoft Internet Explorer allows non-ActiveX COM objects to be instantiated Microsoft Internet Explorer will initialize COM objects that were not intended to be used in the web browser. This may allow an attacker to execute arbitrary code or crash Internet Explorer. (CAN-2005-0163) II. Impact Exploitation of these vulnerabilities may allow a remote, unauthenticated attacker to execute arbitrary code with SYSTEM privileges or with the privileges of the user. If the user is logged on with administrative privileges, the attacker could take complete control of an affected system. An attacker may also be able to cause a denial of service. III. Solution Apply Updates Microsoft has provided the updates for these vulnerabilities in the Security Bulletins and on the Microsoft Update site. Workarounds Please see the following US-CERT Vulnerability Notes for workarounds. Appendix A. References * Microsoft Security Bulletin Summary for October 2005 - * US-CERT Vulnerability Note VU#214572 - * US-CERT Vulnerability Note VU#883460 - * US-CERT Vulnerability Note VU#922708 - * US-CERT Vulnerability Note VU#995220 - * US-CERT Vulnerability Note VU#180868 - * US-CERT Vulnerability Note VU#950516 - * US-CERT Vulnerability Note VU#959049 - * US-CERT Vulnerability Note VU#680526 - * CAN-2005-2120 - * CAN-2005-1987 - * CAN-2005-2122 - * CAN-2005-2128 - * CAN-2005-2119 - * CAN-2005-1978 - * CAN-2005-2127 - * CAN-2005-0163 - * Microsoft Update - _________________________________________________________________ The most recent version of this document can be found at: _________________________________________________________________ Feedback can be directed to US-CERT. Please send email to: with "TA05-284A Feedback VU#959049" in the subject. _________________________________________________________________ Revision History Oct 11, 2004: Initial release _________________________________________________________________ Produced 2005 by US-CERT, a government organization. Terms of use _________________________________________________________________ For instructions on subscribing to or unsubscribing from this mailing list, visit . -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.2.1 (GNU/Linux) iQEVAwUBQ0xBVn0pj593lg50AQJvOQf/QqIy3putm/wkUAUguQaylsCfC38Lysdc bqbtj7oF6HEoCzhQguaqQdMGOqa4QJnrObnkHN29xFhYovKWOIYkYsh6c3IXaNLK PdImVbcMFNn9VsBNNRVr2dqPXJPvgFFzQKsDcKkknnZyxLf5mshwDJoKFsKDGr9c 1P9yxwyagQ8G73gTq6hPV/Wl/6zElXH/chlh6haXe6XN9ArTmz8A3OCAN+BZQUqe /9T4US8oxLeLlNDcQc/PV5v3VuXXW0v9kjEjqAVEH5tRKH/oIkVdgpj7gdrAzDjM MUojHfl1v2/JwWubQ9DFQsBx4Jxv5YvJEREsU7RbVJotn02+Yaaeog== =5hXu -----END PGP SIGNATURE-----