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Category:   Application (E-mail Server)  >   Microsoft Exchange Vendors:   Microsoft
Microsoft Exchange Error in Processing iCAL/vCAL Properties Lets Remote Users Execute Arbitrary Code
SecurityTracker Alert ID:  1016048
SecurityTracker URL:  http://securitytracker.com/id/1016048
CVE Reference:   CVE-2006-0027   (Links to External Site)
Date:  May 9 2006
Impact:   Execution of arbitrary code via network, User access via network
Fix Available:  Yes  Vendor Confirmed:  Yes  
Version(s): Exchange Server 2000, 2003 SP1, 2003 SP2
Description:   A vulnerability was reported in Microsoft Exchange in the processing of calendar data. A remote user can execute arbitrary code on the target system.

The Collaboration Data Objects for Exchange (CDOEX) and Exchange Collaboration Data Objects (EXCDO) functionality does not properly process certain iCAL and vCAL properties in e-mail messages. A remote user can send a specially crafted e-mail message to trigger the vulnerability and execute arbitrary code on the target system.

Impact:   A remote user can execute arbitrary code on the target system.
Solution:   The vendor has issued the following fixes:

Microsoft Exchange Server 2000 with the Exchange 2000 Post:

http://support.microsoft.com/kb/870540/

Microsoft Exchange Server 2003 Service Pack 1:

http://www.microsoft.com/downloads/details.aspx?FamilyId=F32574E0-F35C-4537-9AD0-524CB49AFE53

Microsoft Exchange Server 2003 Service Pack 2:

http://www.microsoft.com/downloads/details.aspx?FamilyId=82AE4397-0982-4585-84C1-DC1AF6944A0F

The Microsoft advisory is available at:

http://www.microsoft.com/technet/security/bulletin/ms06-019.mspx

Vendor URL:  www.microsoft.com/technet/security/bulletin/ms06-019.mspx (Links to External Site)
Cause:   Input validation error
Underlying OS:  Windows (2000), Windows (2003), Windows (XP)

Message History:   None.


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