LDAP unprotected search query during certificate based authentication

[progier389]

Issue Description

During certificate based client authentication, certmap may be configured to use the user cert's subjectDN to look for a match. The SubjectDN is however not escaped and may provides unexpected search result.

Package Version and Platform:

• Platform: Fedora
• Package and version: main branch
• Browser: N/A

Steps to Reproduce
See https://issues.redhat.com/browse/IDMDS-3959

[tbordaz]

Please would you cherry-pick it into 2.6

[vashirov]

We don't have 2.6 yet, this should go to 2.5, and later we will branch off.

[progier389]

216ffc0..eedde89 main -> main
ec29717..182a554 389-ds-base-3.0 -> 389-ds-base-3.0
ef3919c..6e2fac4 389-ds-base-2.5 -> 389-ds-base-2.5