18.Automated Padding Oracle Attacks with PadBuster There’s been a lot of buzz recently about Padding Oracle Attacks, an attack vector demonstrated by Juliano Rizzo and Thai Duong during their presentation at BlackHat Europe earlier this summer. While padding oracles are relatively easy to exploit, the act of exploiting them can be time consuming if you don’t have a good way of automating the attack. The lack of good tools for identifying and exploiting padding oracles led us to develop our own internal padding oracle exploit script, PadBuster, which we’ve decided to share with the community . The tool can be downloaded here , here I’ll spend a little bit of time discussing how the tool works and the various use cases it supports. Some Background : Before we discuss using PadBuster, let’s briefly discuss the fundamentals of a classic padding oracle attack. As the term implies, a critical concept behind a padding oracle attack is the notion of cryptographic