The servlet gateway in IBM Cognos Business Intelligence 8.4.1 before IF3, 10.1.0 before IF4, 10.1.1 before IF4, 10.2.0 before IF4, 10.2.1 before IF2, and 10.2.1.1 before IF1 allows remote attackers to cause a denial of service (temporary gateway outage) via crafted HTTP requests.
Improper Input Validation The product receives input or data, but it does
not validate or incorrectly validates that the input has the
properties that are required to process the data safely and
correctly.