Posted by Jim DelGrosso on June 19, 2015
This week was particularly newsworthy regarding mobile [in]security. Three different cloud storage vulnerabilities were announced affecting users and platforms in various ways.
Let’s look at that last vulnerability mentioned. The business case for using cloud storage with your applications is compelling and sensible. You want to be able to access your data no matter what device you use, right? There are a great many people that enjoy seamless synchronization of data across different devices. Of course, they also expect their data to be protected wherever it’s stored and as it moves from device to device.
It starts with a secure design. Each of these vulnerabilities appears to be weaknesses in the design of the software or a breakdown in the process of building and deploying software. These are often difficult problems to find unless you are specifically looking for them. That is why, in August of 2014 the IEEE Center for Secure Design was created to raise awareness and to help people avoid some common software design flaws.
The Samsung+Swift keyboard vulnerability lines up nicely with the guideline, “Understand how integrating external components changes your attack surface.” It is completely normal to include external software as you build your software, but it is your responsibility to understand the security risks of including that external software.
The insecure storage of data in the cloud maps to the guideline, “Identify sensitive data and how it should be handled.” If your software is going to make use of sensitive data, it is also your responsibility to safeguard it as best as you can. And that means using the appropriate APIs provided by the vendors, which may not be the simplest APIs to use.
You absolutely must look at the design of your software from a security point of view and understand where the greatest security risks exist. If you’re not sure where to start, take a look at the 10 common design flaws documented by the IEEE CSD and at least try to avoid those. They have been seen many, many times in the past.