php-grinder

Project: Github szepeviktor/wordpress-fail2ban 20190130

Vulnerability: #9250250 (2019-01-30 20:53:45)

Warning

There are many false positives, or unexploitable vulnerabilities. Please create working "PoC" exploit before reporting anything to vendor!

Details:

Sink Standard::setcookie

Risk

_POST
/wordpress-fail2ban-master/mu-plugin/wp-fail2ban-mu-instant.php:272 (show/hide source)

252          }
253  
254      }
255  
256      private function ban() {
257  
258          header( 'Status: 403 Forbidden' );
259          header( 'HTTP/1.1 403 Forbidden', true, 403 );
260          header( 'Connection: Close' );
261          header( 'Cache-Control: max-age=0, private, no-store, no-cache, must-revalidate' );
262          header( 'X-Robots-Tag: noindex, nofollow' );
263          header( 'Content-Type: text/html' );
264          header( 'Content-Length: 0' );
265      }
266  
267      private function fake_wplogin() {
268  
269          $server_name         = isset( $_SERVER['SERVER_NAME'] )
270              ? $_SERVER['SERVER_NAME']
271              : $_SERVER['HTTP_HOST'];
272          $username            = trim( $_POST['log'] );
273          $expire              = time() + 3600;
274          $token               = substr( hash_hmac( 'sha256', (string) rand(), 'token' ), 0, 43 );

Threat level 1

Callstack:

O1\WP_Fail2ban::fake_wplogin	/wordpress-fail2ban-master/mu-plugin/wp-fail2ban-mu-instant.php:283 (show/hide source)
263 header( 'Content-Type: text/html' ); 264 header( 'Content-Length: 0' ); 265 } 266 267 private function fake_wplogin() { 268 269 $server_name = isset( $_SERVER['SERVER_NAME'] ) 270 ? $_SERVER['SERVER_NAME'] 271 : $_SERVER['HTTP_HOST']; 272 $username = trim( $_POST['log'] ); 273 $expire = time() + 3600; 274 $token = substr( hash_hmac( 'sha256', (string) rand(), 'token' ), 0, 43 ); 275 $hash = hash_hmac( 'sha256', (string) rand(), 'hash' ); 276 $auth_cookie = $username . '\|' . $expire . '\|' . $token . '\|' . $hash; 277 $authcookie_name = 'wordpress_' . md5( 'authcookie' ); 278 $loggedincookie_name = 'wordpress_logged_in_' . md5( 'cookiehash' ); 279 280 header( 'Cache-Control: max-age=0, private, no-store, no-cache, must-revalidate' ); 281 header( 'X-Robots-Tag: noindex, nofollow' ); 282 setcookie( $authcookie_name, $auth_cookie, $expire, '/brake/wp_content/plugins', '', false, true ); 283 setcookie( $authcookie_name, $auth_cookie, $expire, '/brake/wp-admin', '', false, true ); 284 setcookie( $loggedincookie_name, $auth_cookie, $expire, '/', '', false, true ); 285 header( 'Location: ' . home_url( '/brake/wp-admin/' ) );
O1\WP_Fail2ban::trigger_instant	/wordpress-fail2ban-master/mu-plugin/wp-fail2ban-mu-instant.php:206 (show/hide source)
186 187 // Trigger Miniban at first 188 if ( class_exists( '\Miniban' ) ) { 189 if ( true !== \Miniban::ban() ) { 190 $this->enhanced_error_log( 'Miniban operation failed.' ); 191 } 192 } 193 194 $this->trigger( $slug, $message, $level, $this->prefix_instant ); 195 196 // Remove session 197 remove_action( 'wp_logout', array( $this, 'logout' ) ); 198 wp_logout(); 199 200 // Respond 201 ob_get_level() && ob_end_clean(); 202 if ( defined( 'XMLRPC_REQUEST' ) && XMLRPC_REQUEST ) { 203 $this->fake_xmlrpc(); 204 } elseif ( ! headers_sent() ) { 205 if ( 'wp-login.php' === $GLOBALS['pagenow'] && ! empty( $_POST['log'] ) ) { 206 $this->fake_wplogin(); 207 } else { 208 $this->ban();
O1\WP_Fail2ban::before_login	/wordpress-fail2ban-master/mu-plugin/wp-fail2ban-mu-instant.php:516 (show/hide source)
496 print '<script type="text/javascript">setTimeout(function(){ 497 try{document.getElementById("wp-submit").setAttribute("disabled", "disabled");} 498 catch(e){}}, 0);</script>'; 499 } 500 501 public function login_failed( $username ) { 502 503 $this->trigger( 'wpf2b_auth_failed', $username ); 504 } 505 506 /** 507 * Ban blacklisted usernames and authentication through XML-RPC. 508 */ 509 public function before_login( $user, $username ) { 510 511 if ( in_array( strtolower( $username ), $this->names2ban, true ) ) { 512 $this->trigger_instant( 'wpf2b_banned_username', $username ); 513 } 514 515 if ( defined( 'XMLRPC_REQUEST' ) && XMLRPC_REQUEST ) { 516 $this->trigger_instant( 'wpf2b_xmlrpc_login', $username ); 517 } 518