The random_password_generator (aka RandomPasswordGenerator) gem through 1.0.0 for Ruby uses Kernel#rand to generate passwords, which, due to its cyclic nature, can facilitate password prediction.
The product uses a Pseudo-Random Number Generator (PRNG) but does not correctly manage seeds.
| Link | Tags |
|---|---|
| https://github.com/bvsatyaram/random_password_generator/blob/2855e8d7d8803dbb580ddd6cf13846394eb4530e/lib/random_password_generator.rb#L23 | third party advisory |
| https://ruby-doc.org/core-3.1.2/Random.html | third party advisory |
| https://stackoverflow.com/questions/42170239/security-of-rand-in-ruby-compared-to-other-methods/42170560 | third party advisory exploit |
| https://github.com/bvsatyaram/random_password_generator/pull/1 | issue tracking third party advisory |