JCryptPasswordSimple's password verification function is inherently weak (most likely since it was never implemented into the CMS) from a security perspective. This patch beefs it up to validate passwords with similar logic as used in JUserHelper::verifyPassword() for the hashes that it supports.
As this code is unimplemented in the CMS, you'll need to trust the unit tests here.
I have tested this item successfully on 78232f2
The passwords are still verified correctly.
This comment was created with the J!Tracker Application at issues.joomla.org/joomla-cms/8400.