Title

The operating system must protect audit tools from unauthorized access, modification or deletion. (Cat II impact)

Discussion

Protecting audit information also includes identifying and protecting the tools used to view and manipulate log data. Therefore, protecting audit tools is necessary to prevent unauthorized operation on audit information. Operating systems providing tools to interface with audit information will leverage user permissions and roles identifying the user accessing the tools and the corresponding rights the user has in order to make access decisions regarding the deletion of audit tools. Audit tools include, but are not limited to, vendor-provided and open source audit tools needed to successfully view and manipulate audit information system activity and records. Audit tools include custom queries and report generators. Satisfies: SRG-OS-000256-GPOS-00097, SRG-OS-000257-GPOS-00098, SRG-OS-000258-GPOS-00099

Check Content

Verify the operating system protects audit tools from unauthorized deletion. If it does not, this is a finding. $ ls -l `which praudit` Ensure the praudit executable is owned by root or the wheel group, and is not-writable by other users. $ ls -l /etc/security/audit* Ensure these files are owned by root or the wheel group, and that only root or the wheel group can write to these files.

Fix Text

Configure the operating system to protect audit tools from unauthorized access, modification or deletion.

Additional Identifiers

Rule ID:

Vulnerability ID: V-970

Group Title:

Expert Comments

CCIs tied to check.

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