yt-dlp prior 2023.11.14 Generic Extractor request smuggling

Summaryinfo

A vulnerability marked as problematic has been reported in yt-dlp. Affected is an unknown function of the component Generic Extractor. This manipulation causes request smuggling. This vulnerability is handled as CVE-2023-46121. The attack can be initiated remotely. There is not any exploit available. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability classified as problematic was found in yt-dlp (Data Loss Prevention Software). Affected by this vulnerability is an unknown code of the component Generic Extractor. The manipulation with an unknown input leads to a request smuggling vulnerability. The CWE definition for the vulnerability is CWE-444. The product acts as an intermediary HTTP agent (such as a proxy or firewall) in the data flow between two entities such as a client and server, but it does not interpret malformed HTTP requests or responses in ways that are consistent with how the messages will be processed by those entities that are at the ultimate destination. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

yt-dlp is a youtube-dl fork with additional features and fixes. The Generic Extractor in yt-dlp is vulnerable to an attacker setting an arbitrary proxy for a request to an arbitrary url, allowing the attacker to MITM the request made from yt-dlp's HTTP session. This could lead to cookie exfiltration in some cases. Version 2023.11.14 removed the ability to smuggle `http_headers` to the Generic extractor, as well as other extractors that use the same pattern. Users are advised to upgrade. Users unable to upgrade should disable the Ggneric extractor (or only pass trusted sites with trusted content) and ake caution when using `--no-check-certificate`.

The weakness was released 11/15/2023 as GHSA-3ch3-jhc6-5r8x. It is possible to read the advisory at github.com. This vulnerability is known as CVE-2023-46121 since 10/16/2023. 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 2023.11.14 eliminates this vulnerability. The upgrade is hosted for download at github.com. Applying the patch f04b5bedad7b281bee9814686bba1762bae092eb 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.

Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

Type

• Data Loss Prevention Software

Name

• yt-dlp

License

• open-source

Website

• Product: https://github.com/yt-dlp/yt-dlp/

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