I got an email about this vulnerability and thought I would mention it. Now we know why Unite was quietly upgraded to 1.0.1 bundle 36+ recently. RIM was nice enough to report the vulnerability details.
Turns out that there is a vulnerability in the Unite and BES PDF distiller in the BlackBerry attachment service that converts PDF files for viewing on your BlackBerry. If you open the wrong kind of PDF it can execute code on your system which is very bad. This vulnerability gets a Common Vulnerability Scoring System (CVSS) score of 9.0 which is pretty serious.
Right now Unite has a fix by autoupdating but BES users are out of luck. BES admins are encouraged to disable the PDF functionality following the instructions linked to below.
Systems effected:
- BES 4.1 service pack 3 (4.1.3) through service pack 5 (4.1.5)
- Currently RIM is stating: This issue has been escalated internally to our development team. No resolution time frame is currently available.
- BlackBerry Unite 1.0.1 bundle 35 and earlier
You can read more about it on RIM’s website at these links:
- BES – Vulnerability in the PDF distiller of the BlackBerry Attachment Service for the BlackBerry Enterprise Server
- Unite – Vulnerability in the PDF distiller of the BlackBerry Attachment Service for BlackBerry Unite
Thanks to Josep for pointing out the knowledgebase articles!

Nikolaus Not Registered
Posted: July 15, 2008 at 2:31 PM EST
My Unite! has not updated itself from 35 to 36+. How do I kick off this upgrade or download it myself?
Dario Not Registered
Posted: July 16, 2008 at 1:45 AM EST
Hey!
I got a question for you about this vulnerability. Today a receive from Windows Live Messenger a PDF file, then appear a message about PDF Distiller ask for authorization about transfering a PDF file.
So… This vulnerability could be available to make some virus for Blackberry OS?
Ronen Halevy ( View Profile) Senior admin - Posts: 5298
Posted: July 16, 2008 at 4:29 PM EST
@Dario
It could be used to run malicious code on the BES server from what I understand. Not a good thing…