Earlier we have talked about killapache (DDOS Tool For Apache Web Server) it was coded by kingscope’s , re-edited and coded by “S4(uR4″ , which kills apache and still many websites are vulnerable.
Difference Between Old and New Modified Exploit:-
40c40
< $p = “HEAD / HTTP/1.1rnHost: $ARGV[0]rnRange:bytes=0-$prnAccept-Encoding: gziprnConnection: closernrn”; — > $p = “HEAD “.($ARGV[2] ? $ARGV[2] : “/”).”HTTP/1.1rnHost: $ARGV[0]rnRange:bytes=0-$prnAccept-Encoding: gziprnConnection: closernrn”;
56c56
< $p = “HEAD / HTTP/1.1rnHost: $ARGV[0]rnRange:bytes=0-$prnAccept-Encoding: gziprnConnection: closernrn”; — > $p = “HEAD “.($ARGV[2] ? $ARGV[2] : “/”) .” HTTP/1.1rnHost: $ARGV[0]rnRange:bytes=0-$prnAccept-Encoding: gziprnConnection: closernrn”;
73c73
< if ($#ARGV > 1) {
—
> if ($#ARGV > 0) {
How the code works:-
killapache sends GET requests with multiple “byte ranges” that will claim large portions of the system’s memory space. A “byte range” statement allows a browser to only load certain parts of a document, for example bytes 500 to 1000. It is normally used while downloading large files. This method is used by programs such as download clients to resume downloads that have been interrupted; it is designed to reduce bandwidth requirements. However, it appears that stating multiple unsorted components in the header can cause an Apache server to malfunction.
There is no patch yet released for this vulnerability on apache, but a few work arounds have been found we have also discussed about it in our previous post. These have been posted by The Apache Software Foundation and can be used until a stable fix is released.The vulnerability works by exploiting a feature in web servers that gives you the ability to pause and resume your downloads. These days if you have to stop downloading something part-way through you can generally pick up where you left off and you don’t have to start again from scratch.
To Download the new version Click
Here
