Microsoft Outlook 2003 Scripting Restrictions Can Be Bypassed By Remote Users
SecurityTracker Alert ID: 1010189|
SecurityTracker URL: http://securitytracker.com/id/1010189
(Links to External Site)
Date: May 18 2004
Execution of arbitrary code via network, User access via network|
Exploit Included: Yes |
A vulnerability was reported in Microsoft Outlook 2003. A remote user can send a specially crafted e-mail that when viewed or previewed by the target user, will execute arbitrary code on the target user's system.|
http-equiv reported that a remote user can embed a specially crafted Windows Media Player object within a rich text message and then have the source URL point to the embedded media file. When the target user views the message, scripting code within the media file will reportedly be executed, regardless of the target user's Outlook security settings or Windows Media Player settings.
A demonstration exploit mail message is provided at:
A remote user can send e-mail that, when viewed or previewed, will execute arbitrary code on the target user's system with the privileges of the target user.|
No solution was available at the time of this entry.|
Vendor URL: www.microsoft.com/technet/security/ (Links to External Site)
Access control error|
|Underlying OS: Windows (Any)|
Source Message Contents
Subject: ROCKET SCIENCE: Outllook 2003|
Monday, May 17, 2004
Technical final step to 'silent delivery and installation of an
executable on the target computer, no client input other than
reading an email' this can be achieved with the highly
touted 'secure-by-default' Outlook 2003 mail client from the
craftsman known as 'Microsoft'.
Default settings of the 'gadget' are: restricted zone which
means no active x controls, no scripting, no file downloads etc.
This can all very easily be bypassed by simply embedding in a
rich text message our OLE object, one Windows Media Player. We
then point our source url to our media file which includes or
now run-of -the mill 0s url flip and simply by previewing or
opening the email message invoke our device known as Internet
Explorer to proxy our manipulation of the recipient's machine.
In typical fashion despite the settings in the Windows Media
Player being set to 'disallow' scripting in media files, despite
Outlook 2003's 'highly' secure default setting of view html
content in the so-called 'restricted zone'; it all still works !
[screen shot: http://www.malware.com/rockitman.png 46KB]
This now all automates our process and coupling it with our
previous first step finding:
all we need to do next is our second step and embed the entire
package including the media file into the mail message and send
it along its merry way.
The whole Outlook 2003 'gadget' is broken.
Simply view the mail message:
1. Miserable selection of full screen = true can allow us to run
our 'video' in WMP full screen mode. How about that: forget
about html spam messages, now we have full screen video
advertisements on opening the mail message.
2. Tested on XP, 2K3 POP mail client settings Outlook 2003,
Exchange Server settings unknown at this time
3. Subject to initial WMP settings a notification of connection
settings can pop up, however generally dismissed at first
running of WMP along with neither yes or no selection having an
effect [as usual].
4. Firewalls should flag Outlook itself trying to escape out on
port 80. Nevertheless if all embedded no need for remote hosting.
5. Disable HTML settings or get another mail client [better of
the two as below]
6. Lots more where this came from