The HTTP Server Adapter in IBM Sterling B2B Integrator 5.1 and 5.2.x and Sterling File Gateway 2.1 and 2.2 allows remote attackers to cause a denial of service (connection-slot exhaustion) via a crafted HTTP request.
https://exchange.xforce.ibmcloud.com/vulnerabilities/98650
http://www-01.ibm.com/support/docview.wss?uid=swg21693131