Passwd Authentication Token Manipulation Error Redhat
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HCL Search Reviews Search ISOs Go to Page... LinuxQuestions.org > Forums > Linux Forums > Linux - Security passwd: Authentication token manipulation error User Name Remember Me? Password Linux - Security http://www.linuxquestions.org/questions/linux-security-4/passwd-authentication-token-manipulation-error-511523/ This forum is for all security related questions. Questions, tips, system compromises, firewalls, etc. are all included here. Notices Welcome to LinuxQuestions.org, a friendly and active Linux Community. You are currently viewing LQ as a http://www.softpanorama.org/Authentication/Troubleshooting/authentication_token_manipulation_error.shtml guest. By joining our community you will have the ability to post topics, receive our newsletter, use the advanced search, subscribe to threads and access many other special features. Registration is quick, simple and authentication token absolutely free. Join our community today! Note that registered members see fewer ads, and ContentLink is completely disabled once you log in. Are you new to LinuxQuestions.org? Visit the following links: Site Howto | Site FAQ | Sitemap | Register Now If you have any problems with the registration process or your account login, please contact us. If you need to reset your password, click here. Having a problem logging authentication token manipulation in? Please visit this page to clear all LQ-related cookies. Introduction to Linux - A Hands on Guide This guide was created as an overview of the Linux Operating System, geared toward new users as an exploration tour and getting started guide, with exercises at the end of each chapter. For more advanced trainees it can be a desktop reference, and a collection of the base knowledge needed to proceed with system and network administration. This book contains many real life examples derived from the author's experience as a Linux system and network administrator, trainer and consultant. They hope these examples will help you to get a better understanding of the Linux system and that you feel encouraged to try out things on your own. Click Here to receive this Complete Guide absolutely free. Search this Thread 12-18-2006, 02:36 AM #1 Rednameless LQ Newbie Registered: Feb 2006 Location: Jordan - Amman Distribution: Red Hat Linux Posts: 15 Rep: passwd: Authentication token manipulation error Hello All, I am trying to login to Red Hat AS version 3 using Single user mode to change the root password, but when i log on to the single user mode and type #passwd i have the following error
Recommended Links Selected PAM Modules strace Reference Linux PAM Solaris PAM PAM wheel SecurID Humor Etc This nasty Suse and Red Hat error actually can have different (and sometimes multiple) reasons. It does not prevent successful authentication, but makes changing password via passwd impossible. You still can "implant" password from the other server in /etc/shadow file manually to bypass the error (servers should have identical encryption method set). Often this error arise due to problems with shadow file. For example shadow password file doesnt have entry for this user. i.e, /etc/passwd has an entry for this user, but /etc/shadow doesnt. The checklist below might help to structure your troubleshooting efforts. Checklist the "Authentication token manipulation error" Is this problem for a particular account or all accounts including root. Are you using something like NIS or LDAP? Try grep passwd /etc/nsswitch.conf Running system-config-authentication you can configure the pam settings for the files located in /etc/pam.d. Does the user exists in /etc/passwd and /etc/shadow. Are attributes of those files correct. Should be: /etc/passwd root.root -rw-r--r-- /etc/shadow root.root -r-------- Check if the passwd command has the SUID bit enabled and it's owned by root.root. Check integrity of package which contains passwd. rpm -qf passwd pwdutils-3.0.7.1-17.24 rpm -V pwdutils Are records for the user valid (many be accidentally corrupted by manual editing, extra or missing colon is pretty common problem in this case). If passwd and group file were copied from other server, often shadow and gshadow files are not in sync. Try to delete and re-create user records using useradd to make sure that all account records are in sync and valid. Are permissions on /etc/passwd and /etc/shadow correct Were PAM configuration changed ? What are exact messages in /etc/log/messages. Get strace for the problematic system and strace both for the same user on the system that works OK and has the same PAM configuration. Compare faile