LinuxQuestions.org - Problem with SUDO : sudo: pam

Hello

I have the following OS:

SUSE Linux Enterprise Server 10 (i586)
VERSION = 10
PATCHLEVEL = 1

sudo -V:

Sudo version 1.6.9p17

Sudoers path: /etc/sudoers
Authentication methods: 'pam'
Syslog facility if syslog is being used for logging: local2
Syslog priority to use when user authenticates successfully: notice
Syslog priority to use when user authenticates unsuccessfully: alert
Send mail if the user is not in sudoers
Lecture user the first time they run sudo
Require users to authenticate by default
Root may run sudo
Allow some information gathering to give useful error messages
Set the LOGNAME and USER environment variables
Length at which to wrap log file lines (0 for no wrap): 80
Authentication timestamp timeout: 5 minutes
Password prompt timeout: 5 minutes
Number of tries to enter a password: 3
Umask to use or 0777 to use user's: 022
Path to mail program: /usr/sbin/sendmail
Flags for mail program: -t
Address to send mail to: root
Subject line for mail messages: *** SECURITY information for %h ***
Incorrect password message: Sorry, try again.
Path to authentication timestamp dir: /var/run/sudo
Default password prompt: Password:
Default user to run commands as: root
Path to the editor for use by visudo: /usr/bin/vi
When to require a password for 'list' pseudocommand: any
When to require a password for 'verify' pseudocommand: all
File containing dummy exec functions: /usr/local/libexec/sudo_noexec.so
Reset the environment to a default set of variables
Environment variables to check for sanity:
TERM
LINGUAS
LC_*
LANGUAGE
LANG
COLORTERM
Environment variables to remove:
RUBYOPT
RUBYLIB
PYTHONINSPECT
PYTHONPATH
PYTHONHOME
TMPPREFIX
ZDOTDIR
READNULLCMD
NULLCMD
FPATH
PERL5DB
PERL5OPT
PERL5LIB
PERLLIB
PERLIO_DEBUG
JAVA_TOOL_OPTIONS
SHELLOPTS
GLOBIGNORE
PS4
BASH_ENV
ENV
TERMCAP
TERMPATH
TERMINFO_DIRS
TERMINFO
_RLD*
LD_*
PATH_LOCALE
NLSPATH
HOSTALIASES
RES_OPTIONS
LOCALDOMAIN
CDPATH
IFS
Environment variables to preserve:
XAUTHORIZATION
XAUTHORITY
TZ
PS2
PS1
PATH
MAIL
LS_COLORS
KRB5CCNAME
HOSTNAME
HOME
DISPLAY
COLORS
Local IP address and netmask pairs:
x.x.x.x / 255.255.255.0
fe80::fcff:ffff:feff:ffff / ffff:ffff:ffff:ffff::
fe80::fcff:ffff:feff:ffff / ffff:ffff:ffff:ffff::
fe80::214:5eff:fe20:5546 / ffff:ffff:ffff:ffff::
fe80::200:ff:fe00:0 / ffff:ffff:ffff:ffff::
fe80::fcff:ffff:feff:ffff / ffff:ffff:ffff:ffff::
fe80::dcc4:33ff:feeb:5d67 / ffff:ffff:ffff:ffff::
fe80::fcff:ffff:feff:ffff / ffff:ffff:ffff:ffff::
fe80::bcd3:93ff:fe8a:325d / ffff:ffff:ffff:ffff::

I have configured sudoers as following:

# sudoers file.
#
# This file MUST be edited with the 'visudo' command as root.
#
# See the sudoers man page for the details on how to write a sudoers file.
#

# Host alias specification

# User alias specification

# Cmnd alias specification

# Defaults specification

# prevent environment variables from influencing programs in an
# unexpected or harmful way (CVE-2005-2959, CVE-2005-4158,
# CVE-2006-0151)
Defaults always_set_home
Defaults env_reset

# In the default (unconfigured) configuration, sudo asks for the root password.
# This allows use of an ordinary user account for administration of a freshly
# installed system. When configuring sudo, delete the two
# following lines:
# Defaults targetpw # ask for the password of the target user i.e. root
# ALL ALL=(ALL) ALL # WARNING! Only use this together with 'Defaults targetpw'!

# Runas alias specification

# User privilege specification
root ALL=(ALL) ALL
%admin ALL=(ALL) ALL

# Uncomment to allow people in group wheel to run all commands
# %wheel ALL=(ALL) ALL

# Same thing without a password
# %wheel ALL=(ALL) NOPASSWD: ALL

# Samples
# %users ALL=/sbin/mount /cdrom,/sbin/umount /cdrom
# %users localhost=/sbin/shutdown -h now

One user "cristoph" is member of "admin" group.

The problem is that everytime I use sudo cmd (using cristoph), I get the following error no matter which command I use (ls, cat, more,...):

We trust you have received the usual lecture from the local System
Administrator. It usually boils down to these three things:

#1) Respect the privacy of others.
#2) Think before you type.
#3) With great power comes great responsibility.

sudo: pam_authenticate: Module is unknown

Executing strace sudo ls

execve("/usr/local/bin/sudo", ["sudo", "ls"], [/* 64 vars */]) = 0
brk(0) = 0x8066000
mmap2(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0xb7f14000
access("/etc/ld.so.preload", R_OK) = -1 ENOENT (No such file or directory)
open("/etc/ld.so.cache", O_RDONLY) = 3
fstat64(3, {st_mode=S_IFREG|0644, st_size=80644, ...}) = 0
mmap2(NULL, 80644, PROT_READ, MAP_PRIVATE, 3, 0) = 0xb7f00000
close(3) = 0
open("/lib/libpam.so.0", O_RDONLY) = 3
read(3, "\177ELF\1\1\1\0\0\0\0\0\0\0\0\0\3\0\3\0\1\0\0\0\240\33"..., 512) = 512
fstat64(3, {st_mode=S_IFREG|0755, st_size=44120, ...}) = 0
mmap2(NULL, 41876, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0xb7ef5000
madvise(0xb7ef5000, 41876, MADV_SEQUENTIAL|0x1) = 0
mmap2(0xb7eff000, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0xa) = 0xb7eff000
close(3) = 0
open("/lib/libdl.so.2", O_RDONLY) = 3
read(3, "\177ELF\1\1\1\0\0\0\0\0\0\0\0\0\3\0\3\0\1\0\0\0p\f\0\000"..., 512) = 512
fstat64(3, {st_mode=S_IFREG|0755, st_size=14166, ...}) = 0
mmap2(NULL, 12412, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0xb7ef1000
madvise(0xb7ef1000, 12412, MADV_SEQUENTIAL|0x1) = 0
mmap2(0xb7ef3000, 8192, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x1) = 0xb7ef3000
close(3) = 0
open("/lib/libc.so.6", O_RDONLY) = 3
read(3, "\177ELF\1\1\1\0\0\0\0\0\0\0\0\0\3\0\3\0\1\0\0\0\300Y\1"..., 512) = 512
fstat64(3, {st_mode=S_IFREG|0755, st_size=1433557, ...}) = 0
mmap2(NULL, 1181084, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0xb7dd0000
madvise(0xb7dd0000, 1181084, MADV_SEQUENTIAL|0x1) = 0
mmap2(0xb7eea000, 16384, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x119) = 0xb7eea000
mmap2(0xb7eee000, 9628, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0xb7eee000
close(3) = 0
mmap2(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0xb7dcf000
set_thread_area({entry_number:-1 -> 6, base_addr:0xb7dcf930, limit:1048575, seg_32bit:1, contents:0, read_exec_only:0, limit_in_pages:1, seg_not_present:0, useable:1}) = 0
mprotect(0xb7eea000, 8192, PROT_READ) = 0
munmap(0xb7f00000, 80644) = 0
brk(0) = 0x8066000
brk(0x8087000) = 0x8087000
open("/usr/lib/locale/locale-archive", O_RDONLY|O_LARGEFILE) = -1 ENOENT (No such file or directory)
open("/usr/share/locale/locale.alias", O_RDONLY) = 3
fstat64(3, {st_mode=S_IFREG|0644, st_size=2528, ...}) = 0
mmap2(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0xb7f13000
read(3, "# Locale name alias data base.\n#"..., 4096) = 2528
read(3, "", 4096) = 0
close(3) = 0
munmap(0xb7f13000, 4096) = 0
open("/usr/lib/locale/en_US.UTF-8/LC_IDENTIFICATION", O_RDONLY) = 3
fstat64(3, {st_mode=S_IFREG|0644, st_size=373, ...}) = 0
mmap2(NULL, 373, PROT_READ, MAP_PRIVATE, 3, 0) = 0xb7f13000
close(3) = 0
open("/usr/lib/gconv/gconv-modules.cache", O_RDONLY) = 3
fstat64(3, {st_mode=S_IFREG|0644, st_size=25404, ...}) = 0
mmap2(NULL, 25404, PROT_READ, MAP_SHARED, 3, 0) = 0xb7f0c000
close(3) = 0
open("/usr/lib/locale/en_US.UTF-8/LC_MEASUREMENT", O_RDONLY) = 3
fstat64(3, {st_mode=S_IFREG|0644, st_size=23, ...}) = 0
mmap2(NULL, 23, PROT_READ, MAP_PRIVATE, 3, 0) = 0xb7f0b000
close(3) = 0
open("/usr/lib/locale/en_US.UTF-8/LC_TELEPHONE", O_RDONLY) = 3
fstat64(3, {st_mode=S_IFREG|0644, st_size=59, ...}) = 0
mmap2(NULL, 59, PROT_READ, MAP_PRIVATE, 3, 0) = 0xb7f0a000
close(3) = 0
open("/usr/lib/locale/en_US.UTF-8/LC_ADDRESS", O_RDONLY) = 3
fstat64(3, {st_mode=S_IFREG|0644, st_size=155, ...}) = 0
mmap2(NULL, 155, PROT_READ, MAP_PRIVATE, 3, 0) = 0xb7f09000
close(3) = 0
open("/usr/lib/locale/en_US.UTF-8/LC_NAME", O_RDONLY) = 3
fstat64(3, {st_mode=S_IFREG|0644, st_size=77, ...}) = 0
mmap2(NULL, 77, PROT_READ, MAP_PRIVATE, 3, 0) = 0xb7f08000
close(3) = 0
open("/usr/lib/locale/en_US.UTF-8/LC_PAPER", O_RDONLY) = 3
fstat64(3, {st_mode=S_IFREG|0644, st_size=34, ...}) = 0
mmap2(NULL, 34, PROT_READ, MAP_PRIVATE, 3, 0) = 0xb7f07000
close(3) = 0
open("/usr/lib/locale/en_US.UTF-8/LC_MESSAGES", O_RDONLY) = 3
fstat64(3, {st_mode=S_IFDIR|0755, st_size=80, ...}) = 0
close(3) = 0
open("/usr/lib/locale/en_US.UTF-8/LC_MESSAGES/SYS_LC_MESSAGES", O_RDONLY) = 3
fstat64(3, {st_mode=S_IFREG|0644, st_size=52, ...}) = 0
mmap2(NULL, 52, PROT_READ, MAP_PRIVATE, 3, 0) = 0xb7f06000
close(3) = 0
open("/usr/lib/locale/en_US.UTF-8/LC_MONETARY", O_RDONLY) = 3
fstat64(3, {st_mode=S_IFREG|0644, st_size=286, ...}) = 0
mmap2(NULL, 286, PROT_READ, MAP_PRIVATE, 3, 0) = 0xb7f05000
close(3) = 0
open("/usr/lib/locale/en_US.UTF-8/LC_COLLATE", O_RDONLY) = 3
fstat64(3, {st_mode=S_IFREG|0644, st_size=880086, ...}) = 0
mmap2(NULL, 880086, PROT_READ, MAP_PRIVATE, 3, 0) = 0xb7cf8000
close(3) = 0
open("/usr/lib/locale/en_US.UTF-8/LC_TIME", O_RDONLY) = 3
fstat64(3, {st_mode=S_IFREG|0644, st_size=2451, ...}) = 0
mmap2(NULL, 2451, PROT_READ, MAP_PRIVATE, 3, 0) = 0xb7f04000
close(3) = 0
open("/usr/lib/locale/en_US.UTF-8/LC_NUMERIC", O_RDONLY) = 3
fstat64(3, {st_mode=S_IFREG|0644, st_size=54, ...}) = 0
mmap2(NULL, 54, PROT_READ, MAP_PRIVATE, 3, 0) = 0xb7f03000
close(3) = 0
open("/usr/lib/locale/en_US.UTF-8/LC_CTYPE", O_RDONLY) = 3
fstat64(3, {st_mode=S_IFREG|0644, st_size=208464, ...}) = 0
mmap2(NULL, 208464, PROT_READ, MAP_PRIVATE, 3, 0) = 0xb7cc5000
close(3) = 0
geteuid32() = 1003
write(2, "sudo: ", 6sudo: ) = 6
write(2, "must be setuid root", 19must be setuid root) = 19
write(2, "\n", 1
) = 1
exit_group(1) = ?
Process 23256 detached

Could somebody please tell me what is wrong?

Thanks a lot in advance!

Regards!