[Security Bug] Path Traversal Vulnerability in the API.

[0xs1ash]

Describe the bug

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When performing static code analysis, if a parameter received in the API is forwarded directly to the user without validation, a critical vulnerability arises.In the Devika.py file, the /api/get-browser-snapshot endpoint takes the query from the request and sends the specified file to the user. Since there is no filtering or additional validation, any file can be sent to the user.

PoC

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The vulnerability arises as you can see from below.

• Vulnerable Endpoint: localhost:1337/api/get-browser-snapshot?snapshot_path=
• Payload: ../../../../../../etc/passwd

Url:

File Content:

Vulnerable Code Snippet:

Mitigation

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• https://owasp.org/www-community/attacks/Path_Traversal
• https://brightsec.com/blog/directory-traversal-mitigation/
• https://portswigger.net/web-security/file-path-traversal