|
|
>> Microsoft Exchange Code Execution and Denial of Service Vulnerabilities (MS07-026)
|
Multiple vulnerabilities have been identified in Microsoft Exchange, which could be exploited by attackers to execute arbitrary scripting code, cause a denial of service, or take complete control of an affected system.
The first issue is caused by an input validation error in the Outlook Web Access (OWA) service when handling UTF encoded attachments, which could be exploited by attackers to cause arbitrary scripting code to be executed by the user's browser in the security context of an affected Web site.
The second vulnerability is caused by an error in the EXCDO (Exchange Collaboration Data Objects) functionality when processing certain iCal properties provided in email messages, which could be exploited by remote attackers to cause the email service to stop responding, creating a denial of service condition.
The third issue is caused by a memory corruption error when decoding malformed base64 encoded content, which could be exploited by attackers to execute arbitrary code by sending a specially crafted email message to a vulnerable server.
The fourth vulnerability is caused by an error in the IMAP service when processing malformed commands, which could be exploited by remote attackers to cause a vulnerable service to stop responding, creating a denial of service condition.
Affected Products
Microsoft Exchange 2000 Server Service Pack 3
Microsoft Exchange Server 2003 Service Pack 1
Microsoft Exchange Server 2003 Service Pack 2
Microsoft Exchange Server 2007
Solution
Apply patches :
http://www.microsoft.com/technet/security/bulletin/ms07-026.mspx
References
http://www.vupen.com/english/advisories/2007/1711
http://www.microsoft.com/technet/security/bulletin/ms07-026.mspx
http://labs.idefense.com/intelligence/vulnerabilities/display.php?id=526
Credits
Vulnerabilities reported by Martijn Brinkers (Izecom), Alexander Sotirov (Determina Security Research), Joxean Koret and iDefense Labs.
ChangeLog
2007-05-08 : Initial release
Vulnerability Management
Subscribe to VUPEN VNS and receive real-time e-mail and SMS alerts when new advisories or patches relevant to your systems and network configurations are available.
Feedback
If you have additional information or corrections for this security advisory please submit them via our contact form. | |
|
