Technical Description

Two vulnerabilities have been identified in Microsoft Exchange Server, which could be exploited by attackers to disclose or manipulate email data.

The first issue is caused by an error in Outlook Web Access (OWA) for Exchange Server that does not sufficiently validate email fields when opening mail from within an individual client's OWA session, which could allow attackers to execute malicious script in the security context of a user's OWA session via a specially crafted email, and read, send, and delete emails as the logged-on user.

The second vulnerability is caused by an error in Outlook Web Access (OWA) for Exchange Server that does not sufficiently validate HTML when rendering e-mail from within an individual OWA client session, which could be exploited by attackers to execute malicious script by tricking a user into opening a specially crafted email.

Affected Products

Microsoft Exchange Server 2003 Service Pack 2
Microsoft Exchange Server 2007
Microsoft Exchange Server 2007 Service Pack 1

Solution

Apply patch for Microsoft Exchange Server 2003 Service Pack 2 :
http://www.microsoft.com/downloads/details.aspx?familyid=E099C1D1-5AF6-4D6C-B735-9599412B3131

Apply patch for Microsoft Exchange Server 2007 :
http://www.microsoft.com/downloads/details.aspx?familyid=086A2A13-A1DE-4B1D-BD12-B148BFD2DAFA

Apply patch for Microsoft Exchange Server 2007 Service Pack 1 :
http://www.microsoft.com/downloads/details.aspx?familyid=63E7F26C-92A8-4264-882D-F96B348C96AB

References

http://www.vupen.com/english/advisories/2008/2021
http://www.microsoft.com/technet/security/Bulletin/MS08-039.mspx

Credits

Vulnerabilities reported by Michael Jordan (Context Information Security).

ChangeLog

2008-07-08 : Initial release

Vulnerability Management

Subscribe to VUPEN VNS and receive real-time 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.