An administrator set up a new user account called "test". However, the user is unable to change their password. Given the following output: Which of the following is the most likely cause of this…

The correct answer is A. The SUID bit is missing on the /bin/passwd file. Because /bin/passwd isn’t set SUID root (you can see it’s -rwxr-xr-x rather than -rwsr-xr-x), ordinary users lack the privilege to update the shadow file, causing the “authentication token manipulation” error.

Troubleshooting

Question

An administrator set up a new user account called "test". However, the user is unable to change their password. Given the following output:

Which of the following is the most likely cause of this issue?

Options

AThe SUID bit is missing on the /bin/passwd file.
BThe password provided by the user "test" does not meet complexity requirements.
CThe user "test" already changed the password today.
DThe password has been disabled for user "test".

How the community answered

(32 responses)

A
84% (27)
B
6% (2)
C
6% (2)
D
3% (1)

Explanation

Because /bin/passwd isn’t set SUID root (you can see it’s -rwxr-xr-x rather than -rwsr-xr-x), ordinary users lack the privilege to update the shadow file, causing the “authentication token manipulation” error.

Topics

#SUID bit#File permissions#Password management#User accounts

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