Operating System - HP-UX
1748165 Members
4117 Online
108758 Solutions
New Discussion юеВ

Re: problem about root login

 
lin.chen
Frequent Advisor

problem about root login

root can not login to the system.
exactlly,there is no password prompt for me to input.i only can go to single user model.
(trust system)
8 REPLIES 8
Jonathan Fife
Honored Contributor

Re: problem about root login

Can other users log in? Does anything show up in the syslog when you try to log in as root?
Decay is inherent in all compounded things. Strive on with diligence
lin.chen
Frequent Advisor

Re: problem about root login

all users is not ok!
syslog shows
ug 28 14:56:43 Aladdin syslog: open_module: module /usr/lib/security/libpam_uni
x.1 writable by group
Aug 28 14:56:43 Aladdin syslog: load_modules: can not open module /usr/lib/secur
ity/libpam_unix.1
Aug 28 02:58:57 Aladdin login: open_module: module /usr/lib/security/libpam_unix
.1 writable by group
Aug 28 02:58:57 Aladdin login: load_modules: can not open module /usr/lib/securi
ty/libpam_unix.1
Aug 28 14:58:06 Aladdin syslog: open_module: module /usr/lib/security/libpam_uni
x.1 writable by group
Aug 28 14:58:57 Aladdin above message repeats 5 times
Aug 28 14:58:06 Aladdin syslog: load_modules: can not open module /usr/lib/secur
ity/libpam_unix.1
Aug 28 14:58:58 Aladdin above message repeats 5 times
Aug 28 02:58:58 Aladdin login:
load_modules: pam_sm_acct_mgmt() missing
Aug 28 14:59:53 Aladdin syslog: open_module: module /usr/lib/security/libpam_uni
x.1 writable by group
Aug 28 02:59:27 Aladdin login: open_module: module /usr/lib/security/libpam_unix
.1 writable by group
Aug 28 14:59:53 Aladdin above message repeats 11 times
Aug 28 14:59:53 Aladdin syslog: load_modules: can not open module /usr/lib/secur
ity/libpam_unix.1
Patrick Wallek
Honored Contributor

Re: problem about root login

If you can get to single-user mode, check your /usr/lib/security directory for the file mentioned. It sounds as if some your PAM library files got deleted, corrupted or had permissions changed.
lin.chen
Frequent Advisor

Re: problem about root login

find in OLDsyslog
Aug 28 14:55:56 Aladdin /usr/sbin/nfsd[2182]: nfsd 0 5 sock 4
Aug 28 14:55:56 Aladdin /usr/sbin/nfsd[2183]: nfsd 0 6 sock 4
Aug 28 14:55:56 Aladdin /usr/sbin/nfsd[2184]: nfsd 0 7 sock 4
Aug 28 14:55:56 Aladdin /usr/sbin/nfsd[2189]: nfsd 0 8 sock 4
Aug 28 14:55:56 Aladdin /usr/sbin/nfsd[2190]: nfsd 0 9 sock 4
Aug 28 14:55:56 Aladdin /usr/sbin/nfsd[2192]: nfsd 0 10 sock 4
Aug 28 14:55:56 Aladdin /usr/sbin/nfsd[2193]: nfsd 0 11 sock 4
Aug 28 14:55:56 Aladdin /usr/sbin/nfsd[2194]: nfsd 0 12 sock 4
Aug 28 14:55:56 Aladdin /usr/sbin/nfsd[2196]: nfsd 0 13 sock 4
Aug 28 14:55:56 Aladdin /usr/sbin/nfsd[2197]: nfsd 0 14 sock 4
Aug 28 14:55:56 Aladdin /usr/sbin/nfsd[2172]: nfsd 0 15 sock 4
Aug 28 14:55:57 Aladdin prngd[2255]: prngd 0.9.26 (12 Jul 2002) started up for u
ser root
Aug 28 14:55:57 Aladdin prngd[2255]: have 6 out of 512 filedescriptors open
Aug 28 02:55:57 Aladdin krsd[2258]: Delay time is 300 seconds
Aug 28 02:55:57 Aladdin : getty: cannot vhangup line "console". errno: 25
Aug 28 02:55:58 Aladdin sfd[2259]: daemon already running, aborting.
Aug 28 02:56:18 Aladdin sfd[2562]: recovering from previous daemon crash.
Aug 28 14:56:43 Aladdin syslog: open_module: module /usr/lib/security/libpam_uni
x.1 writable by group
Aug 28 14:56:43 Aladdin syslog: load_modules: can not open module /usr/lib/secur
ity/libpam_unix.1
Aug 28 02:58:57 Aladdin login: open_module: module /usr/lib/security/libpam_unix
OLDsyslog.log (91%)
****************************************
Aug 28 02:56:18 Aladdin sfd[2562]: recovering from previous daemon crash.
Aug 28 14:56:43 Aladdin syslog: open_module: module /usr/lib/security/libpam_uni
x.1 writable by group
Aug 28 14:56:43 Aladdin syslog: load_modules: can not open module /usr/lib/secur
ity/libpam_unix.1
Aug 28 02:58:57 Aladdin login: open_module: module /usr/lib/security/libpam_unix
.1 writable by group
Aug 28 02:58:57 Aladdin login: load_modules: can not open module /usr/lib/securi
ty/libpam_unix.1
Aug 28 14:58:06 Aladdin syslog: open_module: module /usr/lib/security/libpam_uni
x.1 writable by group
Aug 28 14:58:57 Aladdin above message repeats 5 times
Aug 28 14:58:06 Aladdin syslog: load_modules: can not open module /usr/lib/secur
ity/libpam_unix.1
Aug 28 14:58:58 Aladdin above message repeats 5 times
Aug 28 02:58:58 Aladdin login: load_modules: pam_sm_acct_mgmt() missing
Aug 28 14:59:53 Aladdin syslog: open_module: module /usr/lib/security/libpam_uni
x.1 writable by group
Aug 28 02:59:27 Aladdin login: open_module: module /usr/lib/security/libpam_unix
.1 writable by group
Aug 28 14:59:53 Aladdin above message repeats 11 times
Aug 28 14:59:53 Aladdin syslog: load_modules: can not open module /usr/lib/secur
ity/libpam_unix.1
OLDsyslog.log: END
****************************************
Jonathan Fife
Honored Contributor

Re: problem about root login

Change the permissions on /usr/lib/security/libpam_unix.1 so it is not writable by group or other.
Decay is inherent in all compounded things. Strive on with diligence
Carles Viaplana
Valued Contributor

Re: problem about root login

Hello,

Check if usr/lib/secur file or other files about security and remote connections exist into system.

How do you usually connect to system (telnet, ssh,...)? Check error message, it should help you to find missed file.

Regards,

Carles
spex
Honored Contributor

Re: problem about root login

Hi,

It appears that
/usr/lib/security/libpam_unix.1 is group-writable, which is not allowed by the PAM framework. From single-user mode:

# chmod 555 /usr/lib/security/libpam_unix.1
# init 3

PCS
Marvin Strong
Honored Contributor

Re: problem about root login

from single user.

# ll /usr/lib/security/libpam_unix.1
-r-xr-xr-x 1 root sys 192512 Nov 14 2000 /usr/lib/security/libpam_unix.1
# ll -d /usr/lib/security
dr-xr-xr-x 2 bin bin 96 Mar 30 2005 /usr/lib/security

make sure both of those are 555 permissions.
I would guess that libpam_unix.1 is not based on your error message.