Tuesday, May 16, 2006

Microsoft Exchange fails to properly handle vCal and iCal properties

Microsoft Windows and Exchange Server Vulnerabilities
Original release date: May 9, 2006
Last revised: --
Source: US-CERT

Systems Affected
Microsoft Windows
Microsoft Exchange Server

For more complete information, refer to the Microsoft Security Bulletin Summary for May 2006.

Overview

Microsoft has released updates that address critical vulnerabilities in Microsoft Windows and Exchange Server. 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 Bulletin Summary for May 2006 addresses vulnerabilities in Microsoft Windows and Exchange Server. Further information is available in the following US-CERT Vulnerability Notes:

VU#303452 - Microsoft Exchange fails to properly handle vCal and iCal properties

Microsoft Exchange Server does not properly handle the vCal and iCal properties of email messages. Exploitation of this vulnerability may allow a remote, unauthenticated attacker to execute arbitrary code on an Exchange Server.
(CVE-2006-0027)

VU#945060 - Adobe Flash products contain multiple vulnerabilities

Several vulnerabilities in Adobe Macromedia Flash products may allow a remote attacker to execute code on a vulnerable system.
(CVE-2006-0024)

VU#146284 - Macromedia Flash Player fails to properly validate the frame type identifier read from a "SWF" file

A buffer overflow vulnerability in some versions of the Macromedia Flash Player may allow a remote attacker to execute code on a vulnerable system.
(CVE-2005-2628)

II. Impact

A remote, unauthenticated attacker could execute arbitrary code on a vulnerable system. An attacker may also be able to cause a denial of service.

III. Solution
Apply Updates

Microsoft has provided updates for these vulnerabilities in the Security Bulletins. Microsoft Windows updates are available on the Microsoft Update site.

Workarounds

Please see the US-CERT Vulnerability Notes for workarounds.
Appendix A. References
Microsoft Security Bulletin Summary for May 2006 -
Technical Cyber Security Alert TA06-075A -
US-CERT Vulnerability Note VU#303452 -
US-CERT Vulnerability Note VU#945060 -
US-CERT Vulnerability Note VU#146284 -
CVE-2006-0027 -
CVE-2006-0024 -
CVE-2005-2628 -
Microsoft Update -

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