Kernel leak in AfpaCache module of the Fast Response Cache Accelerator (FRCA) component of IBM HTTP Server 1.3.x and Websphere 3.52 allows remote attackers to cause a denial of service via a series of malformed HTTP requests that generate a "bad request" error.
https://exchange.xforce.ibmcloud.com/vulnerabilities/5900
http://www-4.ibm.com/software/webservers/security.html
http://archives.neohapsis.com/archives/bugtraq/2001-03/0061.html
http://archives.neohapsis.com/archives/bugtraq/2001-01/0079.html