pB2556
Reputation: 77
Why can users change their password with passwd, even though they cannot write to the /etc/shadow file directly?
The title pretty much sums it up. Its for schoolwork and i cant seem to find informative sources about it anywhere. Do some of you guys know why?
Upvotes: 0
Views: 87
Answers (1)
DevSolar
Reputation: 70313
1) Find out where the passwd executable is located. (which)
2) List the passwd executable with all parameters, especially the file permissions. (ls)
3) Read the manual page for chmod, especially the part about SETUID.
;-)
Upvotes: 1
Related Questions
- In the case of a normal user with no access to etc/shadow file, how can the passwd command allow him to change his password?
- why normal User can't change password of others if suid bit is set on passwd
- Change password doesnt persist in linux shadow file
- LDAP users not able to change their password using passwd command
- How to replace a password in /etc/shadow using bash script?
- Linux set root password on etc/shadow file
- Edited shadow and passwd to clear root password but new password doesn't work
- How to prevent a user to log in, but allowing to change his password?
- How linux users change their password without root privilege?
- security concerns regarding accessing shadow password file from php