A customer has a problem with authentication against Active Directory. If a user's CN contains escaped double quote characters, then authentication fails with "Sorry, your username and password are incorrect - please try again", and the following in the log file (if you have log4j.category.com.opensymphony.user.provider.ldap = DEBUG):
Note the escaped double quotes in the CN:
You can set this up in Active Directory by inserting something in double quotes in the full name when you create a user. You can remove it or modify it by right-clicking on the user and choosing Rename.
I am able to reproduce the behaviour on my PC against Active Directory. (I have not tried against a different LDAP server.)
If I remove the double quotes from the full name then restart JIRA, the user can log in successfully.
The customer states that use of double quotes in the full name is "typical for our organization" and would like to know a timeframe for when it can be fixed, by a patch if necessary. It is a Critical support issue.