Spotipy, a popular Python library for the Spotify Web API, has been found to contain a vulnerability in URI parsing. This vulnerability can allow an attacker to perform operations on different API endpoints than intended. The vulnerability is known as CVE-2023-23608 and affects Spotipy versions prior to 2.22.1. This post will discuss the exploit details, code snippets, and original references.

Original References

The vulnerability was discovered and documented by the Spotipy development team. For more information, refer to the following links:

1. Spotipy GitHub Repository
2. CVE-2023-23608: Vulnerability Details

Exploit Details

In Spotipy versions prior to 2.22.1, a maliciously crafted URI can be used to trick the library into performing an operation on an unintended API endpoint. This is because the code Spotipy uses to parse URIs and URLs allows an attacker to insert arbitrary characters into the path used for API requests. For example, an attacker can redirect a track lookup request from spotifyApi.track() to an arbitrary API endpoint like playlists.

The following code snippet demonstrates the vulnerable URI parsing in Spotipy

def handle_uri(uri, method, *args, **kwargs):
    uri_parts = uri.split(":")
    if len(uri_parts) >= 4:  # This allows malicious data to be passed
        action = uri_parts[]
        sid = uri_parts[2]
    ...

An attacker can exploit this vulnerability by inserting ".." into the URI path. For instance, if a client application handles a URI from a user and uses the response from the API to perform operations, the attacker can manipulate the outcome.

Impact of the Vulnerability

The impact of CVE-2023-23608 varies depending on the client application, how it performs operations when handling a URI, and how it uses the responses it receives from the API. Attackers can potentially redirect requests to arbitrary API endpoints, leading to unauthorized operations or information disclosure.

Solution

The Spotipy developers have released a patch for this vulnerability in version 2.22.1. To protect against this exploit, users of Spotipy should update to the patched version or later.

To install the latest version of Spotipy

pip install --upgrade spotipy

Stay vigilant and keep your software up-to-date to ensure the continued protection of your applications and user data.

Timeline

Published on: 01/26/2023 21:18:00 UTC
Last modified on: 02/06/2023 17:23:00 UTC