Problem
Security gap: Manipulated JPEG 2000 graphics can contain malcode.
How are these attachments recognised by iQ.Suite?
Solution
There are two fingerprints with which files in JPEG 2000 format can be recognised.
Depending on which format the files have been stored in, there are different variants:
- For the *j2k format: 0000 05 FF 4F FF 51 00
- For the *jp2 format: 0000 0A 00 00 00 0C 6A 50 20 20 0D 0A