This indicates an attack attempt to exploit an Information Disclosure vulnerability in BlackBerry Workspaces Server.
The vulnerability is due to insufficient sanitizing of user supplied inputs in the application. A remote attacker can exploit this to gain unauthorized access to the server's source code via a crafted HTTP request.
The following Workspaces Server components:
Appliance-X versions 1.11.2 and earlier
vApp versions 5.6.0 to 5.6.6
vApp versions 5.5.9 and earlier
Information Disclosure: Remote attackers can gain sensitive information from vulnerable systems.
Apply the most recent upgrade or patch from the vendor.