The flawed version is in Debian 9 (Stretch), currently in testing, but not in Debian 8 (Jessie). The bug appears to be a result of a bad interaction with the encfs encrypted filesystem’s command line interface: Cryptkeeper invokes encfs and attempts to enter paranoia mode with a simulated ‘p’ keypress – instead, it sets passwords for folders to just that letter.

Cryptkeeper’s developer appears to have abandoned the project. Luckily, it’s not used by that many people – although it makes the bug no less tragically hilarious.

Source: You’re taking the p… Linux encryption app Cryptkeeper has universal password: ‘p’ • The Register