Phpwind background SQL Injection for code reading in bed

This vulnerability is a background injection with little impact. I don't want to launch it myself, but the vulnerability itself may have little impact. However, the entire vulnerability analysis process should be recorded when you are still interested, because in the future, I will know that I was still interested in analyzing it. PHPWIND is a product that I have always felt best for security purposes. I like this clever solution. This product uses the checkVar function to globally convert... in GP (GET, POST ..) <= All are replaced with HTML entities, so even if you find an SQL injection, you will be restricted from using functions and subqueries, even if you find a code execution vulnerability, it is restricted to the beginning of the function and php tag. The above section is also one of the reasons why I wrote this vulnerability. I think such a product should be known. First, I found a function. DeleteMessagesByMessageIds function deleteMessagesByMessageIds ($ messageIds) {$ messageIds = is_array ($ messageIds) in lib/message/db/ms_messagesdb.class.php )? S: sqlImplode ($ messageIds): $ messageIds; $ query = $ this-> _ db-> query ("delete from ". $ this-> _ tableName. "WHERE mid in (". $ messageIds. ")"); return $ this-> _ db-> affected_rows ();} so I know that if there is nothing to limit messageIds to be an array, if it is a string, it will cause SQL injection, and then I need to find out where it is not required to be an array. Then I found the manageMessageWithMessageIds function in lib/message/search. ms. php. Next, I found that it was called in the background. In admin/superdel. in php, S: gp (array ('delid'), 'P'); empty ($ delid) & adminmsg ("select the message to delete "); $ messageServer-> manageMessageWithMessageIds ($ delid); adminmsg ('operate _ success ', "$ url"); previously I mentioned checkVar, I sincerely admire the people who do this. The reason why we can inject it here is that this function has been put in the background. Function checkVar (& $ var) {if (is_array ($ var) {foreach ($ var as $ key => $ value) {S :: checkVar ($ var [$ key]) ;}} elseif (P_W! = 'Admincp') {$ var = str_replace (array ('.. ',') ',' <',' = '), array (' & #46; & #46; ',' & #41; ',' & #60; ',' & #61; '), $ var);} elseif (str_replace (array (' <iframe ',' <meta ',' <script '),'', $ var )! = $ Var) {global $ basename; $ basename = 'javascript: history. go (-1); '; adminmsg ('word _ error');} In} elseif (P_W! = 'Admincp') {solution: S: gp (array ('delid'), 'P', 2 );:)