webroot security code

Source: http://zhengj3.blog.51cto.com/6106/290724This repair task is designed to handle the following security issues:[1] SQL blind Injection[2] SQL Injection[3] XPath Injection[4] database error modes discovered[5] Cross-Site Scripting[6] Authentication Bypass Using SQL Injection[7] HTTP Response Segmentation[8] link injection (facilitating cross-site Request Forgery)DetailsThe remedy for several problems is to clear user input. By verifying that the

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Created a form that validates the user, password, random verification codeHTML pageCS Style SheetValidating user methodsWays to verify passwordsHow to generate a verification codeHow to verify the verification codeWays to read users and PasswordsShow PageThe above verification method is called when the focus is lost, the Defocus verification passes, the submission displays the user and the passwordJS uses regular expression to verify the security of u

MD5 hashing Algorithm (single encryption) The System.Security.Cryptography namespace must be introduced /// ///function: MD5 hashing algorithm/// /// parameters: String to encrypt /// Parameters: Special Cryptographic strings /// return value: Ciphertext (uppercase) after encryption, string type Public Static stringGETMD5STR (stringINPUTSTR,stringsecstring) { byte[] Palindata =NULL; byte[] EncryptData =NULL; Try{MD5 MD5=NewMD5Cryp

Randomly generates a string of the specified length, typically used for verification codefunction Randomcheckvalid ($len) {$srcstr = "1A2S3D4F5G6HJ8K9QWERTYUPZXCVBNM";Mt_srand ();$strs = "";for ($i = 0; $i $strs. = $srcstr [Mt_rand (0, 30)];}return $strs;}This function should not be comprehensive enoughfunction Safejson ($varin){$varout =str_replace ("'", "" ", $varin);$varout =str_replace ("\ \", "" ", $varout);$varout =str_replace ("\ n", "", $varout);$varout =str_replace ("\ R", "", $varout);

Php universal global security filtering xss amp; anti-injection php code $ Value) {if (! Is_array ($ value) {if (! Get_magic_quotes_gpc () // do not use addslashes () for characters escaped by magic_quotes_gpc to avoid double escaping. {$ Value = addslashes ($ value); // single quotation marks ('), double quotation marks ("), backslash (\), and NUL (NULL character) add backslash escape} $ arr [$ key]

In JSP, we often use string Str=request.getparameter ("St"), this way to get the value, and then introduce the Var str=So write: String Str=request.getparameter ("St"); Request.setattribute ("str", str); When you accept Var str=${str}, you can avoid this security vulnerability.Security issues caused by nested JSP page values passed in JS code

[ +]; ShortLen = * ( Short*) Strm; STRM+=sizeof(len); if(Len +) {memcpy (buf, STRM, Len); Process (BUF); returnSTRM +Len; } Else { return-1; }}example4:[email protected]~/labs/integer $ cat add.c#include#includeintMainvoid){ intA;//a=2147483647;A=Int_max; printf ("int A (INT_MAX) =%d (0x%x), int a (INT_MAX) + 1 =%d (0x%x) \ n", a,a,a+1, A +1); return 0;} [Email protected]~/labs/integer $./AddintA (Int_max) =2147483647(0x7fffffff),intA (Int_max) +1= -2147483648(0x80000000) Example5:[e

Code security Vulnerability (scatter)

Php ddos Security Processing code, // Query the forbidden IP Address$ Ip = $ _ SERVER ['remote _ ADDR '];$ Fileht = ". htaccess2 ";If (! File_exists ($ fileht) file_put_contents ($ fileht ,"");$ Filehtarr = @ file ($ fileht );If (in_array ($ ip. "\ r \ n", $ filehtarr) die ("Warning :". "// Add a prohibited IP Address$ Time = time ();$ Fileforbid = "log/forbidchk. dat ";If (file_exists ($ fileforbid )){If (

Article Author: eggplant Bao Source of information: Evil Octal Information Security team (www.eviloctal.com) See the light of the dream let it out! I'm not hiding! October 7, I sent the log, prompted everyone! This is a continuation of the first attempt at the last XSS worm. Actually very simple, is two times turn the code. ASCII transcoding reference http://s0n9.blog.sohu.com/16002288.html Write the