Check: GEN003090
Title
Crontab files must not have extended ACLs. (Cat II impact)
Discussion
To protect the integrity of scheduled system jobs and to prevent malicious modification to these jobs, crontab files must be secured. ACLs on crontab files may provide unauthorized access to the files.
Check Content
Check the permissions of the crontab files. # ls -D /var/spool/cron/crontabs/ If any file has an extended ACL, this is a finding.
Fix Text
Remove the extended ACL from the file. # chmod A- [crontab file]
Additional Identifiers
Rule ID:
Vulnerability ID: V-22386
Group Title:
Expert Comments
Expert comments are only available to logged-in users.
CCIs
CCIs tied to check.
| Number | Definition |
|---|---|
| CCI-000225 |
Employ the principle of least privilege, allowing only authorized accesses for users (or processes acting on behalf of users) which are necessary to accomplish assigned organizational tasks. |
Controls
Controls tied to check. These are derived from the CCIs shown above.
| Number | Title |
|---|---|
| AC-6 |
Least Privilege |