The Sleuth Kit (TSK) 4.0.1 does not properly handle "." (dotfile) file system entries in FAT file systems and other file systems for which . is not a reserved name, which allows local users to hide activities it more difficult to conduct forensics activities, as demonstrated by Flame.
The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly.