Full Discussion: Sudo error on AIX 7.1
Operating Systems AIX Sudo error on AIX 7.1 Post 303041491 by System Admin 77 on Monday 25th of November 2019 04:51:59 PM
Old 11-25-2019
Update: Re-installed sudo in the same way.

[root@AIXLPAR]/>ls -ltr /opt/freeware/libexec/sudo/sudoers.so
-rw-r--r--    1 root     system      2262416 Sep 12 06:26 /opt/freeware/libexec/sudo/sudoers.so

[root@AIXLPAR]/>which sudo
[root@AIXLPAR]/>/usr/bin/sudo -V
Sudo version 1.8.27
Configure options: --prefix=/opt/freeware --sbindir=/opt/freeware/sbin --libdir=/opt/freeware/lib --mandir=/opt/freeware/man --with-logging=syslog --with-logfac=auth --with-pam --with-pam-login --with-env-editor --with-ignore-dot --with-aixauth --with-tty-tickets --with-ldap --with-ldap-conf-file=/opt/freeware/etc/openldap/ldap.conf
sudo: error in /etc/sudo.conf, line 0 while loading plugin "sudoers_policy"
sudo: unable to load /opt/freeware/libexec/sudo/sudoers.so:     0509-022 Cannot load module /opt/freeware/lib/libldap.a(libldap-2.4.so.2).
        0509-150   Dependent module /opt/freeware/lib/libssl.a(libssl.so) could not be loaded.
        0509-152   Member libssl.so is not found in archive
        0509-022 Cannot load module /opt/freeware/libexec/sudo/sudoers.so.
        0509-150   Dependent module /opt/freeware/lib/libldap.a(libldap-2.4.so.2) could not be loaded.
sudo: fatal error, unable to load plugins

--- Post updated at 05:51 PM ---


please see the below output

[root@AIXLPAR]/>ls -l /opt/freeware/libexec/sudo/
total 10000
-rw-r--r--    1 root     system         1008 Sep 12 06:26 group_file.la
-rw-r--r--    1 root     system       480311 Sep 12 06:26 group_file.so
-rw-r--r--    1 root     system          990 Sep 12 06:26 libsudo_util.la
lrwxrwxrwx    1 root     system           21 Nov 25 16:41 libsudo_util.so -> libsudo_util.so.0.0.0
lrwxrwxrwx    1 root     system           21 Nov 25 16:41 libsudo_util.so.0 -> libsudo_util.so.0.0.0
-rwxr-xr-x    1 root     system      1422797 Sep 12 06:26 libsudo_util.so.0.0.0
-rw-r--r--    1 root     system          953 Sep 12 06:27 sudo_noexec.la
-rw-r--r--    1 root     system       474192 Sep 12 06:27 sudo_noexec.so
-rw-r--r--    1 root     system         1018 Sep 12 06:26 sudoers.la
-rw-r--r--    1 root     system      2262416 Sep 12 06:26 sudoers.so
-rw-r--r--    1 root     system         1020 Sep 12 06:27 system_group.la
-rw-r--r--    1 root     system       449242 Sep 12 06:27 system_group.so

[root@AIXLPAR]/>lslpp -l | grep -i "ldap"
[root@AIXLPAR]/>rpm -qa | grep -i "ldap"


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pam_ssh_agent_auth(8)							PAM						     pam_ssh_agent_auth(8)

       This module provides authentication via ssh-agent.  If an ssh-agent listening at SSH_AUTH_SOCK can successfully authenticate that it has
       the secret key for a public key in the specified file, authentication is granted, otherwise authentication fails.

/etc/pam.d/sudo: auth sufficient pam_ssh_agent_auth.so file=/etc/security/authorized_keys /etc/sudoers: Defaults env_keep += "SSH_AUTH_SOCK" This configuration would permit anyone who has an SSH_AUTH_SOCK that manages the private key matching a public key in /etc/security/authorized_keys to execute sudo without having to enter a password. Note that the ssh-agent listening to SSH_AUTH_SOCK can either be local, or forwarded. Unlike NOPASSWD, this still requires an authentication, it's just that the authentication is provided by ssh-agent, and not password entry. ARGUMENTS
file=<path to authorized_keys> Specify the path to the authorized_keys file(s) you would like to use for authentication. Subject to tilde and % EXPANSIONS (below) allow_user_owned_authorized_keys_file A flag which enables authorized_keys files to be owned by the invoking user, instead of root. This flag is enabled automatically whenever the expansions %h or ~ are used. debug A flag which enables verbose logging sudo_service_name=<service name you compiled sudo to use> (when compiled with --enable-sudo-hack) Specify the service name to use to identify the service "sudo". When the PAM_SERVICE identifier matches this string, and if PAM_RUSER is not set, pam_ssh_agent_auth will attempt to identify the calling user from the environment variable SUDO_USER. This defaults to "sudo". EXPANSIONS
~ -- same as in shells, a user's Home directory Automatically enables allow_user_owned_authorized_keys_file if used in the context of ~/. If used as ~user/, it would expect the file to be owned by 'user', unless you explicitely set allow_user_owned_authorized_keys_file %h -- User's Home directory Automatically enables allow_user_owned_authorized_keys_file %H -- The short-hostname %u -- Username %f -- FQDN EXAMPLES
in /etc/pam.d/sudo "auth sufficient pam_ssh_agent_auth.so file=~/.ssh/authorized_keys" The default .ssh/authorized_keys file in a user's home-directory "auth sufficient pam_ssh_agent_auth.so file=%h/.ssh/authorized_keys" Same as above. "auth sufficient pam_ssh_agent_auth.so file=~fred/.ssh/authorized_keys" If the home-directory of user 'fred' was /home/fred, this would expand to /home/fred/.ssh/authorized_keys. In this case, we have not specified allow_user_owned_authorized_keys_file, so this file must be owned by 'fred'. "auth sufficient pam_ssh_agent_auth.so file=/secure/%H/%u/authorized_keys allow_user_owned_authorized_keys_file" On a host named foobar.baz.com, and a user named fred, would expand to /secure/foobar/fred/authorized_keys. In this case, we specified allow_user_owned_authorized_keys_file, so fred would be able to manage that authorized_keys file himself. "auth sufficient pam_ssh_agent_auth.so file=/secure/%f/%u/authorized_keys" On a host named foobar.baz.com, and a user named fred, would expand to /secure/foobar.baz.com/fred/authorized_keys. In this case, we have not specified allow_user_owned_authorized_keys_file, so this file must be owned by root. v0.8 2009-08-09 pam_ssh_agent_auth(8)

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