Before i discuss this, let me just say that the bug has been patched (was in 2.5.1) and at the time of writing this Joomla is already 2 increments away - 2.5.3 is currently available.
So back in the dark ages of my programming life I, like many people who started coding, worked in web development. And during these times I had to write modules/hack things together for various frameworks, including Joomla. At that stage i was also signed up to the Joomla security security list and a few weeks ago i saw a security update come through that affected most joomla installs and was a core issue. Most of the ‘omgjoomlasux’ commercials/vulns/notifcations actually are problems with 3rd party modules rather than with joomla itself, so this was pretty interesting. Secondly the bug was listed as a SQL injection bug and critical, this gave me the idea that with a bit of luck and some mysql commands I too could hack the planet. I fired up my green_text_on_black_background console and gave it a whirl.
First i pulled Joomla installs 2.5.1 and 2.5.2 from the download page (the issue had just been patched), next I had to go through these to figure out what changed. Doing a quick diff in linux, or for windows people use the cool winmerge it was quick and painless to find the issue:
- Magnetic Stripes: Part 2 (Attacking)
- Bypassing LF Entry Systems
- zacon wrap-up!
- Hacking fixed key remotes
- Arduino Watering System: Update
Not the quickest of cats
on the best of days.
Magnetic Stripes (2)
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