For all user provided files that are downloaded by Label Studio, set the `Content-Security-Policy: sandbox ` response header when viewed on the site. Other remediation strategies are also available. Version 1.10.1 contains a patch for this issue. Since the `Content-Type` was determined by the file extension of the downloaded file, an attacker could import in a `.html` file that would execute JavaScript when visited. Once the downloaded file path was retrieved by the previous API endpoint, `data_import/api.py`lines 595C1 through 616C62 demonstrated that the `Content-Type` of the response was determined by the file extension, since `mimetypes.guess_type` guesses the `Content-Type` based on the file extension. The downloaded file path could then be retrieved by sending a request to `/api/projects/` was the ID of the downloaded file. `data_import/uploader.py` lines 125C5 through 146 showed that if a URL passed the server side request forgery verification checks, the contents of the file would be downloaded using the filename in the URL. For an example, an attacker can craft a JavaScript payload that adds a new Django Super Administrator user if a Django administrator visits the image. Executing arbitrary JavaScript could result in an attacker performing malicious actions on Label Studio users if they visit the crafted avatar image. Prior to version 1.10.1, this feature could had been abused to download a HTML file that executed malicious JavaScript code in the context of the Label Studio website. Label Studio, an open source data labeling tool had a remote import feature allowed users to import data from a remote web source, that was downloaded and could be viewed on the website. An attacker can abuse this issue to execute arbitrary Java when a victim executes the supposedly sandboxed code. An attacker can abuse this issue to execute arbitrary Java when a victim executes the supposedly sandboxed code.Īrtemis Java Test Sandbox versions before 1.11.2 are vulnerable to a sandbox escape when an attacker loads untrusted libraries using System.load or System.loadLibrary. An attacker can abuse this issue to execute arbitrary Java when a victim executes the supposedly sandboxed code.Īrtemis Java Test Sandbox versions before 1.8.0 are vulnerable to a sandbox escape when an attacker includes class files in a package that Ares trusts. Artemis Java Test Sandbox versions less than 1.7.6 are vulnerable to a sandbox escape when an attacker crafts a special subclass of InvocationTargetException.

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