Title

All global initialization files must not have extended ACLs. (Cat II impact)

Discussion

Global initialization files are used to configure the user's shell environment upon login. Malicious modification of these files could compromise accounts upon logon.

Check Content

Check global initialization files for extended ACLs. # ls -lL /etc/profile /etc/bashrc /etc/csh.login /etc/csh.cshrc /etc/environment /etc/.login /etc/security/environ If the permissions on an existing file include a "+", the file has an extended ACL, this is a finding.

Fix Text

Remove the extended ACL from the file. # chmod A- [global initialization file with extended ACL]

Additional Identifiers

Rule ID: SV-227671r603266_rule

Vulnerability ID: V-227671

Group Title: SRG-OS-000480

Expert Comments

CCIs tied to check.

Controls tied to check. These are derived from the CCIs shown above.