This file is indexed.

/usr/share/pam-configs/krb5 is in libpam-heimdal 4.5-3.

This file is owned by root:root, with mode 0o644.

The actual contents of the file can be viewed below.

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Name: Kerberos authentication
Default: yes
Priority: 704
Conflicts: krb5-openafs
Auth-Type: Primary
Auth:
	[success=end default=ignore]	pam_krb5.so minimum_uid=1000 try_first_pass
Auth-Initial:
	[success=end default=ignore]	pam_krb5.so minimum_uid=1000
Account-Type: Additional
Account:
	required			pam_krb5.so minimum_uid=1000
Password-Type: Primary
Password:
	[success=end default=ignore]	pam_krb5.so minimum_uid=1000 try_first_pass use_authtok
Password-Initial:
	[success=end default=ignore]	pam_krb5.so minimum_uid=1000
Session-Type: Additional
Session:
	optional			pam_krb5.so minimum_uid=1000