e=3 Bleichenbacher's Signature Forgery

Prerequisites:

1. RSA Encryption/Decryption

2. RSA Digital Signatures on padded messages using PKCS#1 v1.5

The following blog posts/articles have explained e=3 Bleichenbacher's Signature Forgery attack clearly and can be useful:

1. Filippo Valsorda's CVE --> This was a CVE by Filippo Valsorda on python-rsa module due to fault in implementation of signatures of PKCS#1 v1.5 padded messages

2. Karabut's writeup for RSA CTF Challenge, Google CTF Quals 2017

3. Hal Finney's write-up on Bleichenbacher's Signature Forgery

4. Interesting explanation on Stack Exchange

Check out the original paper describing the attack by Daniel Bleichenbacher- http://archiv.infsec.ethz.ch/education/fs08/secsem/bleichenbacher98.pdf