LangChain up to 0.0.x server-side request forgery

Summaryinfo

A vulnerability was found in LangChain up to 0.0.x. It has been classified as critical. This affects an unknown part. This manipulation causes server-side request forgery. This vulnerability is tracked as CVE-2024-0243. The attack is restricted to local execution. No exploit exists. Upgrading the affected component is recommended.

Detailsinfo

A vulnerability was found in LangChain up to 0.0.x. It has been declared as problematic. Affected by this vulnerability is an unknown code block. The manipulation with an unknown input leads to a server-side request forgery vulnerability. The CWE definition for the vulnerability is CWE-918. The web server receives a URL or similar request from an upstream component and retrieves the contents of this URL, but it does not sufficiently ensure that the request is being sent to the expected destination. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

With the following crawler configuration: ```python from bs4 import BeautifulSoup as Soup url = "https://example.com" loader = RecursiveUrlLoader( url=url, max_depth=2, extractor=lambda x: Soup(x, "html.parser").text ) docs = loader.load() ``` An attacker in control of the contents of `https://example.com` could place a malicious HTML file in there with links like "https://example.completely.different/my_file.html" and the crawler would proceed to download that file as well even though `prevent_outside=True`. https://github.com/langchain-ai/langchain/blob/bf0b3cc0b5ade1fb95a5b1b6fa260e99064c2e22/libs/community/langchain_community/document_loaders/recursive_url_loader.py#L51-L51 Resolved in https://github.com/langchain-ai/langchain/pull/15559

The weakness was disclosed 02/25/2024 as bf0b3cc0b5ade1fb95a5b1b6fa260e99064c2e22. It is possible to read the advisory at github.com. This vulnerability is known as CVE-2024-0243 since 01/04/2024. It demands that the victim is doing some kind of user interaction. The technical details are unknown and an exploit is not publicly available.

Upgrading to version 0.1.0 eliminates this vulnerability. Applying the patch bf0b3cc0b5ade1fb95a5b1b6fa260e99064c2e22 is able to eliminate this problem. The bugfix is ready for download at github.com. The best possible mitigation is suggested to be upgrading to the latest version.

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Productinfo

Name

• LangChain

Version

• 0.0

License

• open-source

CPE 2.3info

• 🔍

CPE 2.2info

• 🔍

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