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pam: Disable pam_krb5, pam_ksu by default. 

These are not useful unless you also set up /etc/krb5.conf and a
keytab for the host from the Kerberos KDC.  But having them enabled
by default means that creating /etc/krb5.conf just to enable use of
Kerberos for _client-side_ single sign-on creates usability issues.

As proposed on tech-security:
https://mail-index.netbsd.org/tech-security/2023/06/16/msg001160.html
This commit is contained in:
riastradh 2023-06-20 22:00:00 +00:00
parent 23582e911e
commit c4717c3f66
5 changed files with 16 additions and 16 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

6
etc/pam.d/display_manager
View File

@ -1,4 +1,4 @@
# $NetBSD: display_manager,v 1.5 2010/11/13 19:19:40 christos Exp $ # $NetBSD: display_manager,v 1.6 2023/06/20 22:00:00 riastradh Exp $
# #
# PAM configuration for the display manager services. Specific display # PAM configuration for the display manager services. Specific display
# manager service configurations can include this one. # manager service configurations can include this one.
@ -7,14 +7,14 @@
# auth # auth
auth required pam_nologin.so no_warn auth required pam_nologin.so no_warn
auth sufficient pam_skey.so no_warn try_first_pass auth sufficient pam_skey.so no_warn try_first_pass
auth sufficient pam_krb5.so no_warn try_first_pass #auth sufficient pam_krb5.so no_warn try_first_pass
auth optional pam_afslog.so no_warn try_first_pass auth optional pam_afslog.so no_warn try_first_pass
# pam_ssh has potential security risks. See pam_ssh(8). # pam_ssh has potential security risks. See pam_ssh(8).
#auth sufficient pam_ssh.so no_warn try_first_pass #auth sufficient pam_ssh.so no_warn try_first_pass
auth required pam_unix.so no_warn try_first_pass auth required pam_unix.so no_warn try_first_pass
# account # account
account required pam_krb5.so #account required pam_krb5.so
account required pam_unix.so account required pam_unix.so
# session # session

6
etc/pam.d/ftpd
View File

@ -1,4 +1,4 @@
# $NetBSD: ftpd,v 1.7 2008/03/26 11:31:17 lukem Exp $ # $NetBSD: ftpd,v 1.8 2023/06/20 22:00:00 riastradh Exp $
# #
# PAM configuration for the "ftpd" service # PAM configuration for the "ftpd" service
# #
@ -8,14 +8,14 @@
# pam_unix. # pam_unix.
auth required pam_nologin.so no_warn auth required pam_nologin.so no_warn
auth sufficient pam_skey.so no_warn try_first_pass auth sufficient pam_skey.so no_warn try_first_pass
auth sufficient pam_krb5.so no_warn try_first_pass #auth sufficient pam_krb5.so no_warn try_first_pass
auth optional pam_afslog.so no_warn try_first_pass auth optional pam_afslog.so no_warn try_first_pass
auth required pam_unix.so no_warn try_first_pass auth required pam_unix.so no_warn try_first_pass
# account # account
# Even though this is identical to "system", we open code it here because # Even though this is identical to "system", we open code it here because
# we open code the auth stack. # we open code the auth stack.
account required pam_krb5.so #account required pam_krb5.so
account required pam_unix.so account required pam_unix.so
# session # session

8
etc/pam.d/sshd
View File

@ -1,4 +1,4 @@
# $NetBSD: sshd,v 1.9 2008/03/26 11:31:17 lukem Exp $ # $NetBSD: sshd,v 1.10 2023/06/20 22:00:00 riastradh Exp $
# #
# PAM configuration for the "sshd" service # PAM configuration for the "sshd" service
# #
@ -6,14 +6,14 @@
# auth # auth
auth required pam_nologin.so no_warn auth required pam_nologin.so no_warn
auth sufficient pam_skey.so no_warn try_first_pass auth sufficient pam_skey.so no_warn try_first_pass
auth sufficient pam_krb5.so no_warn try_first_pass #auth sufficient pam_krb5.so no_warn try_first_pass
auth optional pam_afslog.so no_warn try_first_pass auth optional pam_afslog.so no_warn try_first_pass
# pam_ssh has potential security risks. See pam_ssh(8). # pam_ssh has potential security risks. See pam_ssh(8).
#auth sufficient pam_ssh.so no_warn try_first_pass #auth sufficient pam_ssh.so no_warn try_first_pass
auth required pam_unix.so no_warn try_first_pass auth required pam_unix.so no_warn try_first_pass
# account # account
account required pam_krb5.so #account required pam_krb5.so
account required pam_login_access.so account required pam_login_access.so
account required pam_unix.so account required pam_unix.so
@ -23,5 +23,5 @@ account required pam_unix.so
session required pam_permit.so session required pam_permit.so
# password # password
password sufficient pam_krb5.so no_warn try_first_pass #password sufficient pam_krb5.so no_warn try_first_pass
password required pam_unix.so no_warn try_first_pass password required pam_unix.so no_warn try_first_pass

4
etc/pam.d/su
View File

@ -1,4 +1,4 @@
# $NetBSD: su,v 1.8 2020/03/03 00:47:33 christos Exp $ # $NetBSD: su,v 1.9 2023/06/20 22:00:00 riastradh Exp $
# #
# PAM configuration for the "su" service # PAM configuration for the "su" service
# #
@ -8,7 +8,7 @@ auth sufficient pam_rootok.so no_warn
auth sufficient pam_self.so no_warn auth sufficient pam_self.so no_warn
auth sufficient pam_skey.so no_warn try_first_pass auth sufficient pam_skey.so no_warn try_first_pass
#auth sufficient pam_u2f.so authfile=/etc/u2f_mappings cue #auth sufficient pam_u2f.so authfile=/etc/u2f_mappings cue
auth sufficient pam_ksu.so no_warn try_first_pass #auth sufficient pam_ksu.so no_warn try_first_pass
#auth sufficient pam_group.so no_warn group=rootauth root_only authenticate #auth sufficient pam_group.so no_warn group=rootauth root_only authenticate
auth requisite pam_group.so no_warn group=wheel root_only fail_safe auth requisite pam_group.so no_warn group=wheel root_only fail_safe
auth required pam_unix.so no_warn try_first_pass nullok auth required pam_unix.so no_warn try_first_pass nullok

8
etc/pam.d/system
View File

@ -1,21 +1,21 @@
# $NetBSD: system,v 1.8 2008/03/26 11:31:17 lukem Exp $ # $NetBSD: system,v 1.9 2023/06/20 22:00:00 riastradh Exp $
# #
# System-wide defaults # System-wide defaults
# #
# auth # auth
auth sufficient pam_skey.so no_warn try_first_pass auth sufficient pam_skey.so no_warn try_first_pass
auth sufficient pam_krb5.so no_warn try_first_pass #auth sufficient pam_krb5.so no_warn try_first_pass
auth optional pam_afslog.so no_warn try_first_pass auth optional pam_afslog.so no_warn try_first_pass
auth required pam_unix.so no_warn try_first_pass nullok auth required pam_unix.so no_warn try_first_pass nullok
# account # account
account required pam_krb5.so #account required pam_krb5.so
account required pam_unix.so account required pam_unix.so
# session # session
session required pam_lastlog.so no_fail no_nested session required pam_lastlog.so no_fail no_nested
# password # password
password sufficient pam_krb5.so no_warn try_first_pass #password sufficient pam_krb5.so no_warn try_first_pass
password required pam_unix.so no_warn try_first_pass password required pam_unix.so no_warn try_first_pass