321 lines
12 KiB
HTML
321 lines
12 KiB
HTML
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<meta name="author" content="Stefan Friese">
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<title>Introduction to SQL Injection</title>
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</head>
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<body>
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<div class="reveal">
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<div class="slides">
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<section id="title-slide">
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<h1 class="title">Introduction to SQL Injection</h1>
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<p class="author">Stefan Friese</p>
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<p class="date">11 April, 2024</p>
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</section>
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<section id="topics" class="slide level1">
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<h1>Topics</h1>
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<ul>
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<li class="fragment">How an SQL Injection is Created</li>
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<li class="fragment">How to Exploit an SQL Injection</li>
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<li class="fragment">SPOILER: How to Prevent an SQL Injection in the
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Next Presentation</li>
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</ul>
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</section>
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<section class="slide level1">
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<h2 id="how-does-it-happen">How Does it Happen</h2>
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<p>An SQL injection occurs when two things come together.</p>
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</section>
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<section class="slide level1">
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<h3 id="number-1">Number 1</h3>
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<p>An SQL Query as a string embedded in other languages</p>
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<div class="sourceCode" id="cb1"><pre
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class="sourceCode python"><code class="sourceCode python"><span id="cb1-1"><a href="#cb1-1" aria-hidden="true" tabindex="-1"></a>sql_query <span class="op">=</span></span>
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<span id="cb1-2"><a href="#cb1-2" aria-hidden="true" tabindex="-1"></a> cursor.execute(</span>
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<span id="cb1-3"><a href="#cb1-3" aria-hidden="true" tabindex="-1"></a> <span class="st">"SELECT * FROM user_data where username = 'admin' and password = 's3cur3P4ssw0rd'"</span></span>
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<span id="cb1-4"><a href="#cb1-4" aria-hidden="true" tabindex="-1"></a> )</span></code></pre></div>
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</section>
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<section class="slide level1">
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<h3 id="number-2">Number 2</h3>
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<p>User input is possible as a part of said SQL query</p>
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<div class="sourceCode" id="cb2"><pre
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class="sourceCode python"><code class="sourceCode python"><span id="cb2-1"><a href="#cb2-1" aria-hidden="true" tabindex="-1"></a>sql_query <span class="op">=</span></span>
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<span id="cb2-2"><a href="#cb2-2" aria-hidden="true" tabindex="-1"></a> cursor.execute(</span>
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<span id="cb2-3"><a href="#cb2-3" aria-hidden="true" tabindex="-1"></a> <span class="st">"SELECT * FROM user_data where username = '</span><span class="sc">%s</span><span class="st">' and password = '</span><span class="sc">%s</span><span class="st">'"</span>,</span>
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<span id="cb2-4"><a href="#cb2-4" aria-hidden="true" tabindex="-1"></a> <span class="op">%</span> (username, password)</span>
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<span id="cb2-5"><a href="#cb2-5" aria-hidden="true" tabindex="-1"></a> )</span></code></pre></div>
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</section>
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<section class="slide level1">
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<h2 id="how-to-exploit-an-sql-injection">How to Exploit an SQL
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Injection</h2>
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<ul>
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<li class="fragment">Close the string through an ending quote</li>
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<li class="fragment">Continue the query with your own SQL code</li>
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</ul>
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</section>
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<section id="the-end" class="slide level1">
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<h1>The End</h1>
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<p><img src="./images/exploits_of_a_mom.png" alt="Convoluted Code" width="50%" height="auto%"></p>
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</section>
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</div>
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</div>
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