Title

The dialog enabling users to grant permissions to execute signed content from an un-trusted authority must be disabled. (Cat II impact)

Discussion

Java applets exist in both signed and unsigned forms. Although signed applets allow for authentication of the author in order to establish trust, even signed applets can potentially contain malware. Applet sources considered trusted will normally have their certificate information populated into the browser. This enables Java to validate applets against trusted sources automatically. Permitting users to grant execution permissions to Java applets signed by un-trusted authorities may result in malware executing on the system. This risks system confidentiality, integrity and availability.

Check Content

If the system is on the SIPRNET, this requirement is NA. Navigate to the 'deployment.properties' file for Java. For 32 bit systems: C:\Program Files\Java\jre6\lib\deployment.properties For 64 bit systems you must check both the 64 bit and the 32 bit files: C:\Program Files\Java\jre6\lib\deployment.properties C:\Program Files (x86)\Java\jre6\lib\deployment.properties If the key 'deployment.security.askgrantdialog.notinca=false' is not present, this is a finding. If the key 'deployment.security.askgrantdialog.notinca' exists and is set to true, this is a finding.

Fix Text

Disable the 'Allow user to grant permissions to content from an un-trusted authority' feature. Navigate to the 'deployment.properties' file for Java. For 32 bit systems: C:\Program Files\Java\jre6\lib\deployment.properties For 64 bit systems you must check both the 64 bit and the 32 bit files: C:\Program Files\Java\jre6\lib\deployment.properties C:\Program Files (x86)\Java\jre6\lib\deployment.properties Add or update the key, 'deployment.security.askgrantdialog.notinca' set the value to 'false'.

Additional Identifiers

Rule ID: SV-43207r2_rule

Vulnerability ID: V-32828

Group Title:

Expert Comments

CCIs tied to check.

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