The password hashing API in Drupal 7.x before 7.34 and the Secure Password Hashes (aka phpass) module 6.x-2.x before 6.x-2.1 for Drupal allows remote attackers to cause a denial of service (CPU and memory consumption) via a crafted request.
- https://www.drupal.org/SA-CORE-2014-006
- https://github.com/Primus27/WordPress-Long-Password-Denial-of-Service
- https://github.com/c0r3dump3d/wp_drupal_timing_attack