IBM HTTP Server mod_proxy Interim Responses DoS Vulnerability

Summary
This host is running IBM HTTP Server, which is prone to Denial of Service Vulnerability.
Impact
A remote/local user can cause denial of service Impact Level : Application
Solution
Update to Fix Pack 19 http://www-01.ibm.com/support/docview.wss?uid=swg27008517 ***** NOTE : Ignore this warning if above mentioned patch is applied already. *****
Insight
Issue is due to an error in the ap_proxy_http_process_response() function in mod_proxy_http.c in the mod_proxy module when processing large number of interim responses to the client, which could consume all available memory resources.
Affected
IBM HTTP Server versions prior to 6.1.0.19.
References