News Stay informed about the latest enterprise technology news and product updates.

Fixes in for BlackBerry vulnerability

Attackers could exploit a security hole in the BlackBerry Enterprise Server to block attachments or launch malicious code.

For the second time in as many weeks, Research In Motion Ltd. (RIM) is acknowledging that its BlackBerry Enterprise Server is vulnerable to attack.

This time, the problem is that attackers could use a corrupt Portable Network Graphics (PNG) file to block a user's ability to view attachments. It could also be exploited to launch malicious code on the BlackBerry Attachment Service component of the server, an add-on that enables BlackBerry users to open and view e-mail attachments on their devices.

The vulnerability has been reported in version 4.0 Service Pack 2.

More on BlackBerry security

Flaws found in BlackBerry server

BBC suspends BlackBerry service amid security scare

Is wireless security pointless?

For those using Microsoft Exchange, the Waterloo, Ontario-based vendor recommended installing BlackBerry Enterprise Server 4.0 Service Pack 3, then installing version 4.0 Service Pack 3, Hotfix 1. IBM Lotus Domino and Novell GroupWise users should install BlackBerry Enterprise Server 4.0 Service Pack 3, the company said.

As a workaround, administrators "can exclude PNG images from being processed by the attachment service in the BlackBerry Enterprise Server, or disable the attachment service completely," the vendor said.

Last week, RIM acknowledged that attackers could exploit flaws in BlackBerry Enterprise Server to cause a denial of service. Danish vulnerability clearinghouse Secunia issued its own advisory describing two problems:

  • An error in how malformed TIFF image attachments are handled can be exploited to prevent a BlackBerry user from viewing attachments.
  • An error in how Server Routing Protocol (SRP) packets are handled can be exploited to disrupt the communication between the BlackBerry Enterprise Server and BlackBerry Router service, potentially causing a denial of service.

Secunia noted that for successful exploitation, the attacker must connect to the BlackBerry Server/Router via TCP port 3101.

As a workaround, RIM recommended ensuring TIFF images aren't processed by the attachment service and/or disabling the image attachment distiller. The vendor added that the BlackBerry Enterprise Server and the BlackBerry Router should be placed behind the firewall in a trusted network segment.

Dig Deeper on BYOD and mobile device security best practices

Start the conversation

Send me notifications when other members comment.

Please create a username to comment.