Title

All AIX users home directories must have mode 0750 or less permissive. (Cat II impact)

Discussion

Excessive permissions on home directories allow unauthorized access to user files.

Check Content

Check the home directory mode of each interactive user in "/etc/passwd": #cut -d : -f 6 /etc/passwd | xargs -n1 ls -ld | more drwxr-xr-x 20 root system 4096 Jan 28 13:46 / drwxr-xr-x 33 root system 8192 Jan 28 13:51 /etc lrwxrwxrwx 1 bin bin 8 Jan 24 07:23 /bin -> /usr/bin drwxrwxr-x 4 bin bin 256 Mar 23 2017 /usr/sys drwxrwxr-x 15 root adm 4096 Jan 24 12:26 /var/adm drwxr-xr-x 2 root sys 4096 Jan 24 08:43 /usr/lib/uucp drwxr-xr-x 6 root system 4096 Jan 24 07:34 /var/adm/invscout drwxr-xr-x 3 ipsec ipsec 256 Jan 24 08:43 /etc/ipsec drwxr-xr-x 2 sshd system 256 Aug 11 2017 /home/srvproxy drwxr-xr-x 8 esaadmin system 256 Jan 24 09:02 /var/esa drwxr-x--- 2 doejohn staff 256 Jan 25 13:18 /home/doejohn If an interactive user's home directory's mode is more permissive than "0750", this is a finding. NOTE: Application directories are allowed and may need "0755" permissions (or greater) for correct operation.

Fix Text

Change the mode of interactive users' home directories to "0750" or less permissive using the following command: # chmod 0750 <home directory>

Additional Identifiers

Rule ID: SV-215331r991592_rule

Vulnerability ID: V-215331

Group Title: SRG-OS-000480-GPOS-00230

Expert Comments

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