-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 National Cyber Alert System Technical Cyber Security Alert TA06-010A Microsoft Windows, Outlook, and Exchange Vulnerabilities Original release date: January 10, 2006 Last revised: January 10, 2006 Source: US-CERT Systems Affected * Microsoft Windows * Microsoft Outlook * Microsoft Exchange For more complete information, refer to the Microsoft Security Bulletin Summary for January 2006. Overview Microsoft has released updates that address critical vulnerabilities in Windows, Outlook, and Exchange. Exploitation of these vulnerabilities could allow a remote, unauthenticated attacker to execute arbitrary code or cause a denial of service on a vulnerable system. I. Description Microsoft Security Bulletins for January 2006 address vulnerabilities in Microsoft Windows, Outlook, and Exchange. Further information is available in the following US-CERT Vulnerability Notes: VU#915930 - Microsoft embedded web font buffer overflow A heap-based buffer overflow in the way Microsoft Windows processes embedded web fonts may allow a remote, unauthenticated attacker to execute arbitrary code on a vulnerable system. (CVE-2006-0010) VU#252146 - Microsoft Outlook and Microsoft Exchange TNEF decoding vulnerability Microsoft Outlook and Microsoft Exchange contain an unspecified vulnerability in processing TNEF attachments. This may allow a remote, unauthenticated attacker to execute arbitrary code on a system running the vulnerable software. (CVE-2006-0002) II. Impact Exploitation of these vulnerabilities may allow a remote, unauthenticated attacker to execute arbitrary code 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 US-CERT Vulnerability Notes in Appendix A for workarounds. Appendix A. References * Microsoft Security Bulletin Summary for January 2006 - * US-CERT Vulnerability Note VU#915930 - * US-CERT Vulnerability Note VU#252146 - * CVE-2006-0002 - * CAN-2006-0010 - * Microsoft Update - ____________________________________________________________________ The most recent version of this document can be found at: ____________________________________________________________________ Feedback can be directed to US-CERT Technical Staff. Please send email to with "TA06-010A Feedback VU#915930" in the subject. ____________________________________________________________________ For instructions on subscribing to or unsubscribing from this mailing list, visit . ____________________________________________________________________ Produced 2006 by US-CERT, a government organization. Terms of use: ____________________________________________________________________ Revision History January 10, 2006: Initial release -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.2.1 (GNU/Linux) iQEVAwUBQ8Q6Bn0pj593lg50AQIL7Qf8CadB1mP4WdchYj+Ge/kKkSYCps/Q5y0S 6sgEiToVljKCUfdBEBbBomuXR5tFlHaIItefeFhzPIAJcVLkudXP3EcwvM8tvDN6 LpnGUquKucZUHFYUbuDdYcYvLRkXf5zTb3dS/zh03UfW2Gn/5s6zyBab30BGl7r/ LRSoF2bVPRY0E2RhYYK1RzY68/ZyPmES0s11RAx5F0QiejQNv/i32jTuoh2SyxIw 4L70DZm/vuAqDsSFCjYb2YUsScKIMJwmU4Hv39J/+dB0TARV7nhscSIHAXXBaccU XBrGgSJCc+4YZq/8PnpWuDmEBMLcOuAcv8LXjBbcodAWRBwAPBXcBg== =9cnz -----END PGP SIGNATURE-----