code-injection

问题 I was hacking printf() of glibc in one of my project and encountered some problem. Could you please give some clues? And one of my concern is why the same solution for malloc/free works perfect! As attached, “PrintfHank.c” contains my own solution of printf() which will be preloaded before standard library; and “main.c” just outputs a sentence using printf(). After editing two files, I issued following commands: compile main.c gcc –Wall –o main main.c create my own library gcc –Wall –fPIC

问题 I have been using the block of code below to supposedly stop sql injections. It is something someone showed me when I first started php(which was not that long ago) I place it in every page just as shown on the open. I am wondering if it is effective? I do not know how to test for sql injections <?php //Start the session session_start(); //=======================open connection include ('lib/dbconfig.php'); //===============This stops SQL Injection in POST vars foreach ($_POST as $key =>

问题 This question gets asked a lot, but I still haven't found a straight answer on stackoverflow. Are these two functions sufficient or not? There are a lot of contradictory comments around the internet "yes its fine?, "no, never use it". Others say, use PDO, which I don't understand. I'm just a beginner to PHP, so I don't fully understand all of the ins and outs of security. I've tried reading and understanding the following, but many don't make much sense to me. http://ha.ckers.org/xss.html Do

问题 (I am asking this question (and answering it), to make accessible some (hopefully useful) information, since I could not find this readily using search engines. However, feel free to answer it and add useful information :-).) How can HTTP headers be escaped/quoted in Python? And/Or how can they be validated to make sure they do not contain any context-escaping values? In other words, how can we do for HTTP headers, what cgi.escape and urllib.quote methods (and sanitizing) do for HTML and URLs

问题 I have written a Java bytecode parser using Haskell, and it works just fine. However the next step has me completely stumped. My Haskell program needs to modify the .class file so that, when executed, the Java program prints: " Entering [method name here] " before executing a method, and " Exiting [method name here] " after executing a method. All I know is that we will need to append the constant pool and method table with calls to System.out.println , but I feel I'm still missing something.

问题 after stopping the use of deprecated mysql_* functions, I switched to mysqli. But then, I noticed that non-prepared statements are non-secure against SQL injection. Then, I changed again my code. What I had was the following function that checks if the variable $ID exists in the database and prints the value of title for that row: function showPostTitle($ID, $mysqli) { $result = $mysqli -> query("SELECT ID, title FROM blog where ID = $ID"); $row = $result -> fetch_array(MYSQLI_BOTH); echo

问题 This question already has answers here : Closed 7 years ago . Possible Duplicate: What's the best method for sanitizing user input with PHP? What are the best PHP input sanitizing functions? The ultimate clean/secure function Goal : Properly sanitize all inputs from text boxes before entering into DB, which is then output to a page. For my use case, I need to prevent potential problems while not eliminating the data input. Also, the charset is explicitly set to UTF-8 in both the HTTP header

问题 I'm moving from the realm of just JS to php and Ajax. I've dabbled some with PHP in the past. I really appreciate how much help stackoverflow has been in helping me with basic questions. let says I have a div called #divName . I use the following JS for Ajax. Some of this is just pseudo code. var request = false; try { request = new XMLHttpRequest(); } catch (trymicrosoft) { try { request = new ActiveXObject("Msxml2.XMLHTTP"); } catch (othermicrosoft) { try { request = new ActiveXObject(

问题 This question already has answers here : Guice call init method after instantinating an object (7 answers) Configure an object provided by a Guice Module (2 answers) Closed 4 years ago . Is there a way to have guice call a init() method after it has instantiated a singleton? Calling init() inside the constructor is not an option since init() could be overriden by a subclass. 回答1: You can use `@PostConstruct' in guice when you use the mycila/jsr250 extension. This will cause your init() method

问题 I am working with Grey Hat Python book at the moment. It describes on how to create a debugger in python. So far my debugger is able to start the process and attach to it. The problem happens when I try to retrieve a module handle from the process. According to OllyDbg the DLL is present in the program, but GetModuleHandleA fails to get a handle. I improved a code from the book a little bit so in case GetModuleHandleA fails to retrieve a handle the function will try to create a remote thread