A recent discovery in the Acme Fix Images software developed by AcmeThemes has exposed a severe security vulnerability. This post will delve into the details of CVE-2023-47793, which is a missing authorization vulnerability that allows attackers to exploit incorrectly configured access control security levels. We'll examine this issue in-depth, share code snippets demonstrating the vulnerability, provide links to original references, and discuss potential methods of exploitation.

Vulnerability Overview

CVE-2023-47793 is a critical missing authorization vulnerability affecting Acme Fix Images versions n/a through 1... By exploiting this vulnerability, an attacker can gain unauthorized access to sensitive data, perform malicious actions, and compromise the application's security.

The vulnerability stems from a lack of proper access control mechanisms in the Acme Fix Images software. Due to incorrect configuration, the application does not verify the user's authorization before they perform specific actions, leaving sensitive data exposed to potential unauthorized access.

Code Snippet Demonstrating the Vulnerability

The following code snippet demonstrates the missing authorization vulnerability in the Acme Fix Images application:

@app.route("/api/v1/images/fix")
def fix_images():
    # Missing authorization check here
    # ...
    # Perform the desired action (e.g., fix the image)
    return jsonify({"status": "success", "message": "Image fixed successfully"})

In this example, the application's backend does not check whether the user sending the request for fixing images is authorized to perform this action or not. It merely processes the request and returns a success message, making it vulnerable to unauthorized access.

Original References

Here are the original references related to CVE-2023-47793, which provide further technical details and insights into the discovered vulnerability:

1. NVD - CVE-2023-47793
2. AcmeThemes Security Advisory
3. Exploit Database - CVE-2023-47793

Exploit Details

An attacker could exploit CVE-2023-47793 by sending crafted HTTP requests to the vulnerable API endpoint /api/v1/images/fix, bypassing authorization checks. This could allow the attacker to gain unauthorized access to the process of fixing images and potentially manipulate the images for malicious purposes.

`bash

curl -X GET "https://target-domain.com/api/v1/images/fix?image_id=123" -H "User-Agent: CVE-2023-47793 Exploit"

`

This request exploits the missing authorization vulnerability by sending a GET request to the /api/v1/images/fix endpoint without any valid authorization tokens or credentials.

`

If the exploit is successful, the server will return a success message, indicating that the unauthorized action (fixing the image) has been performed.

To mitigate this vulnerability, developers and administrators using Acme Fix Images software should

1. Ensure proper access control mechanisms are in place and validate user authorization before allowing users to perform critical actions, such as repairing images.

2. Update Acme Fix Images to the latest version, which may include security patches addressing the vulnerability.

3. Regularly audit software components for security vulnerabilities and apply necessary patches and updates.

Conclusion

CVE-2023-47793 is a severe missing authorization vulnerability in Acme Fix Images that may negatively impact application security and expose sensitive information. This post has provided an in-depth analysis of the vulnerability, code snippets demonstrating the issue, links to original references, and details on potential exploit methods. By staying informed and adopting proper security practices, developers and administrators can work to protect their applications and users from such vulnerabilities.

Timeline

Published on: 12/09/2024 13:15:30 UTC