Posted by Synopsys Editorial Team on January 26, 2015
In the fall, the headlines were littered with news of the “iCloud Data Breach.” This exposed nude photographs of celebrities and potentially left all iCloud accounts vulnerable to exposure.
Fingers were pointed and people and companies were blamed for the breach. However, it all boils down to a lapse in proper security controls to prevent attacks; that control is the one that allowed access to iCloud accounts by adversaries. Updates are made to mobile phone software and pushed to users across the globe where they are given the option to update or not. Many times, users do not update their phone. Part of that may be because the users don’t understand what security flaws or bugs are being fixed by updating their software.
If users are aware of bug updates, it is typically of one big bug and not all of the bugs that are being fixed. Often times, it can take several releases before a known bug is fixed.
Related to the leaked celebrity news is the bug we’ll discuss below that was reported in 2013 and was not fixed until the release of iOS 7.1, March 2014. The thumbnail restoration issue is a vulnerability which stemmed from a problem seen across many applications and assessments, the caching of information. Caching can be a very good thing in order to increase loading time and create a more favorable user interface, but it can have consequences as well. In the iOS case, photos were cached in the gallery and a malicious user could recover the cached photos by saving a simple transparent image in its place. Given the recent events, a scenario could play out like this:
These photos present a vulnerable iPhone’s camera roll and the process of recovery.
First, you delete a photo. In this case, the Pepsi bottle in the top right.
After the image is deleted, save a transparent image (any size) into the camera gallery and recover the deleted image.
No tools necessary.