This indicates an attack attempt against an Information Disclosure vulnerability in Oracle Business Intelligence Mobile App Designer.
The vulnerability is caused by an improper validation of user supplied data when the vulnerable software handles maliciously crafted packets. A remote attacker can exploit this to gain unauthorized access to sensitive information via a crafted request.
Oracle Business Intelligence Mobile App Designer 188.8.131.52 and prior
Information Disclosure: Remote attackers can gain sensitive information from vulnerable systems.
Apply the most recent upgrade or patch from the vendor.