cPanel login redirect loop

Justin Emmons

• June 21, 2016 13:02

I am unable to login on my CPanel. I get a successful login message, and then it loops back to the login page each time. Everything was fine before I rebuilt to Apache 2.4.

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  cPanelMichael

  • June 22, 2016 20:34

  Hello, Do you notice any error messages in /usr/local/cpanel/logs/error_log or /usr/local/cpanel/logs/login_log when this happens? Thank you.

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  Justin Emmons

  • July 01, 2016 14:44

  /usr/local/cpanel/logs/login_log shows the following: "POST /login/?login_only=1 HTTP/1.1" FAILED LOGIN whostmgrd: login attempt to whm by a non-reseller/root DEFERRED LOGIN cpaneld: switchuser: uid or gid passed user switch is less than 99

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  cPanelMichael

  • July 01, 2016 17:31

  Hello, The error message suggests the UID or GID for one of your users is possibly below "99". Could you search the /etc/passwd and /etc/shadow files to see if the user you are logging in as, or any user for that matter, utilizes a low numbered UID/GID? Here's the commands to use:
  grep $username /etc/passwd grep $username /etc/shadow
  Or, view the full /etc/passwd and /etc/shadow files with the "cat" command to find the offending account. Thank you.

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  Justin Emmons

  • July 01, 2016 19:40

  $username:x:501:48::/home/$username:/bin/bash The GID needs to be above 99? Does that mean it would have access to anything set to or below 99?

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  cPanelMichael

  • July 01, 2016 21:23

  Hello, The "48" GID alone does not grant root privileges to a user. You can review the following FAQ entry for additional information about how cPanel assigns UID and GID numbers:

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