How users are able to change their passwords even though they don't have permissions to edit /etc/shadow file ?
Issue
- The permissions of
/etc/shadowfile in RHEL5 are 400(r--------) and in RHEL6/RHEL7 they are 000(---------). This implies that no one have the write access to shadow file. Then how are the users able to change their passwords which are saved in/etc/shadowfile ?
Environment
- Red Hat Enterprise Linux 7
- Red Hat Enterprise Linux 6
- Red Hat Enterprise Linux 5
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