Feeds

BlackBerry squeezed by DoS security bugs

Three vulns but only one fixed

Eight steps to building an HP BladeSystem

Research In Motion (RIM) has warned of a trio of vulnerabilities in its popular BlackBerry software that create a means for hackers to launch denial of service attacks. Patches are available to defend against only one of the vulnerabilities, but RIM has issued advice on how to guard against attack from the other two.

The most serious unfixed risk stems from a flaw in processing Server Routing Protocol (SRP) packets. This security bug creates a possible means to disrupt communication between BlackBerry Enterprise Server and BlackBerry Router, potentially disrupting service. A separate unpatched security bug in the handling of malformed Tiff image attachments creates a means for a remote hacker to launch denial of service attacks against the BlackBerry Attachment Service, providing an internal user is duped into viewing malicious files on a BlackBerry handheld.

The vulnerabilities have been reported in BlackBerry Enterprise Server 4.0 as well as later versions. Domino, Exchange and Novell GroupWise versions of the platform are all affected. Exploitation of the first vulnerability means a hacker needs to be able to connect to the BlackBerry Server or Router via port 3101/TCP. Shielding BlackBerry servers behind a firewall ought to thwart these attacks. Additionally, RIM advises users to exclude the processing of Tiff images as a workaround against the second threat, pending the availability of a more complete fix.

A third security bug - for which a fix has been made available - sees a BlackBerry handheld web browser vulnerable to a denial of service via a specially crafted Java Application Description (JAD) file. Users are advised to install BlackBerry device software version 4.0.2 or later to guard against attack.

Details of the vulnerabilities were outlined by FX of the Phenoelit group during a presentation at the 22nd Chaos Communication Congress in Berlin last week. US CERT has produced an overview of the vulnerabilities here.

In a statement, RIM said that it had "already developed software fixes for the issues identified by FX and, although there have been no customer reports of any actual problems, RIM has also provided temporary precautionary measures that can be taken in the meantime until customers are able to implement the software updates". ®

Securing Web Applications Made Simple and Scalable

More from The Register

next story
Auntie remains MYSTIFIED by that weekend BBC iPlayer and website outage
Still doing 'forensics' on the caching layer – Beeb digi wonk
Apple orders huge MOUNTAIN of 80 MILLION 'Air' iPhone 6s
Bigger, harder trouser bulges foretold for fanbois
Bring back error correction, say Danish 'net boffins
We don't need no steenkin' TCP/IP retransmission and the congestion it causes
GoTenna: How does this 'magic' work?
An ideal product if you believe the Earth is flat
Telstra to KILL 2G network by end of 2016
GSM now stands for Grave-Seeking-Mobile network
Seeking LTE expert to insert small cells into BT customers' places
Is this the first step to a FON-a-like 4G network?
Yorkshire cops fail to grasp principle behind BT Fon Wi-Fi network
'Prevent people that are passing by to hook up to your network', pleads plod
BlackBerry: Toss the server, mate... BES is in the CLOUD now
BlackBerry Enterprise Services takes aim at SMEs - but there's a catch
prev story

Whitepapers

Designing a Defense for Mobile Applications
Learn about the various considerations for defending mobile applications - from the application architecture itself to the myriad testing technologies.
Implementing global e-invoicing with guaranteed legal certainty
Explaining the role local tax compliance plays in successful supply chain management and e-business and how leading global brands are addressing this.
Top 8 considerations to enable and simplify mobility
In this whitepaper learn how to successfully add mobile capabilities simply and cost effectively.
Seven Steps to Software Security
Seven practical steps you can begin to take today to secure your applications and prevent the damages a successful cyber-attack can cause.
Boost IT visibility and business value
How building a great service catalog relieves pressure points and demonstrates the value of IT service management.