Login or Register :: Home :: Search :: Your Account :: Forums :: Waraxe Advisories :: Tools :: January 15, 2026 Menu Home Logout Discussions Forums Members List IRC chat Tools Base64 coder MD5 hash CRC32 checksum ROT13 coder SHA-1 hash URL-decoder Sql Char Encoder Affiliates y3dips ITsec Md5 Cracker User Manuals AlbumNow Content Content Sections FAQ Top Info Feedback Recommend Us Search Journal Your Account User Info Welcome, Anonymous Nickname Password (Register) Membership: Latest: MichaelSnaRe New Today: 0 New Yesterday: 0 Overall: 9144 People Online: Visitors: 209 Members: 0 Total: 209 Full disclosure Defense in depth -- the Microsoft way (part 95): the (shared)"Start Menu" is dispensable Re: Multiple Security Misconfigurations and CustomerEnumeration Exposure in Convercent Whistleblowing Platform(EQS Group) RIOT OS 2026.01-devel-317 Stack-Based Buffer Overflow in RIOT ethos Serial Frame Parser RIOT OS 2026.01-devel-317 Stack-Based Buffer Overflow in tapslip6 Utility via Unbounded Device Path Construction TinyOS 2.1.2 Stack-Based Buffer Overflow in mcp2200gpio TinyOS 2.1.2 printfUART Global Buffer Overflow via UnboundedFormat Expansion KL-001-2026-01: yintibao Fun Print Mobile Unauthorized Access via Context Hijacking Multiple Security Misconfigurations and Customer Enumeration Exposure in Convercent Whistleblowing Platform (EQS Group) Panda3d v1.10.16 Uncontrolled Format String in Panda3D egg-mkfont Allows Stack Memory Disclosure Panda3d v1.10.16 egg-mkfont Stack Buffer Overflow Panda3d v1.10.16 deploy-stub Unbounded Stack Allocation Leading to Uninitialized Memory MongoDB v8.3.0 Integer Underflow in LMDB mdb_load Bioformats v8.3.0 Untrusted Deserialization of Bio-Formats Memoizer Cache Files Bioformats v8.3.0 Improper Restriction of XML External Entity Reference in Bio-Formats Leica Microsystems XML Parser MongoDB v8.3.0 Heap Buffer Underflow in OpenLDAP LMDB mdb_load IT Security and Insecurity Portal www.waraxe.us Forum Index -> Sql injection -> PHP code to prevent View previous topic :: View next topic PHP code to prevent Posted: Wed Jan 03, 2007 11:09 pm Lord_Vader Regular user Joined: Jan 04, 2007 Posts: 5 Location: Netherlands We all know this code is vunarable for SQL injection: Code: $user=$_POST['username']; $pass=$_POST['password']; $result=mysql_query("SELECT * FROM admin_users WHERE user='$user' AND pass='$pass'"); $row=mysql_fetch_row($result); if($row==0) { die("Wrong login!"); } But what should I use then? I'm stuck here. Thanks in advance Posted: Thu Jan 04, 2007 12:01 pm waraxe Site admin Joined: May 11, 2004 Posts: 2407 Location: Estonia, Tartu This code by himself does not contain sql injection, because of the single quotes, surrounding input variables. Now, most of the real world php-enabled webservers are configured with "magic_quotes=on", so sql injection attempts will fail. IF and only IF you encounter webserver with "magic_quotes=off", ten you can have sql injection case here, if there is no additional php code, responsible for input data sanitize. In the last case you can try this username: 'OR 1=1 LIMIT 1/* and let the password be whatever you want. Then beause of the sql injection you will be loged on as first admin in table. By the way, php pcode wants POST method, so you need manually crafted html file for exploiting. P.S. I figured it out, that you asked question from webmaster's point of view, not from attacker's. So you want better code? First of all, don't use plaintext passwords in database, better use salted md5 hashes. Posted: Thu Jan 04, 2007 12:31 pm Chb Valuable expert Joined: Jul 23, 2005 Posts: 206 Location: Germany Secondary: Use mysql_real_escape_string() and maybe also addslashes() for escaping user input to prevent code. _________________ www.der-chb.de Posted: Mon Jan 08, 2007 12:54 am Lord_Vader Regular user Joined: Jan 04, 2007 Posts: 5 Location: Netherlands Ok, I get it. Thanks for the replies. I use mysql_real_escape_string() for security. @waraxe: Yes, I use MD5, but I only posted part of my code PHP code to prevent www.waraxe.us Forum Index -> Sql injection You cannot post new topics in this forum You cannot reply to topics in this forum You cannot edit your posts in this forum You cannot delete your posts in this forum You cannot vote in polls in this forum All times are GMT Page 1 of 1 All Posts1 Day7 Days2 Weeks1 Month3 Months6 Months1 YearOldest FirstNewest First Select a forumSecurity Research by waraxe----------------General discussionHow to fixMetasploit relatedHash cracking requests----------------MD5 hashesAll other hashesHash related informationhttp://www.waraxe.us portal----------------SuggestionsCooperation proposalsSecurity bugs and issues in general----------------Newbies cornerSql injectionCross-site scripting aka XSSRemote file inclusionFull path disclosureShell commands injectionPhishing and Social EngineeringAll other security holesVarious software----------------PhpNukePostNukePhpBBXMB forumvBulletin BoardInvision Power Boarde107MamboJoomlaXOOPSM$ WindowsLinux worldAll other softwareCoppermine Photo GalleryProgramming languages----------------PhpMySqlPerlJavaJavascriptC and C++Visual BasicBorland Delphi and PascalPythonHTML and XMLAssemblerReverse engineering----------------Newbies cornerDisassemblingPHP script decode requestsMiscellaneous stuff----------------Future of the ITNanotechnologyFun cornerLinksTry2hack sitesProxy databaseDirect Downloads----------------ToolsTutorialsWordlistsRecycle Bin----------------Removed messagesOutdated posts Powered by phpBB © 2001-2008 phpBB Group

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