Sybase target accounts can be updated successfully, but when we try to use the new password to log on, we get an authentication error. It looks like this is observed when the new password contains special characters.
A recent vulnerability fix inadvertently escaped special characters in passwords in a way that made the escape characters part of the password when it was sent by PAM for authentication.
Release : 3.4.0-3.4.5 and 4.0.0
Component : PRIVILEGED ACCESS MANAGEMENT
As of October 2021 the problem is fixed in 4.0.1, see the following item on page Resolved Issues in 4.0.1:
Authentication issue on account (CA PAM)
This issue is fixed in 3.4.6 and 4.0.1. Please note the issue occurs in 3.4.0-3.4.5 and 4.0.0.