Title

Default system accounts (with the exception of root) must not be listed in the at.allow file or must be included in the at.deny file if the at.allow file does not exist. (Cat II impact)

Discussion

Default accounts, such as bin, sys, adm, uucp, daemon, and others, should never have access to the at facility. This would create a possible vulnerability open to intruders or malicious users.

Check Content

# more /etc/cron.d/at.allow If default accounts (such as bin, sys, adm, and others) are listed in the at.allow file, this is a finding.

Fix Text

Remove the default accounts (such as bin, sys, adm, and others) from the at.allow file.

Additional Identifiers

Rule ID: SV-227767r603266_rule

Vulnerability ID: V-227767

Group Title: SRG-OS-000480

Expert Comments

CCIs tied to check.

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