Goal Reached Thanks to every supporter — we hit 100%!

Goal: 1000 CNY · Raised: 1336 CNY

100%
Buy Us a Coffee

CVE-2023-35934— yt-dlp File Downloader cookie leak

Quick assessment

Affected
yt-dlp yt-dlp
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

yt-dlp是基于现在不活动的youtube-dlc 的youtube-dl分支。 yt-dlp 2023.07.06 版本之前存在信息泄露漏洞，该漏洞源于该应用使用的外部下载器可能会在 HTTP 重定向到其他主机时泄漏 cookie。

CVSS 6.1 · Medium EPSS 1.04% · P61

Possible ATT&CK Techniques 1 AI

T1530 · Data from Cloud Storage
Get alerts for future matching vulnerabilities Log in to subscribe

I. Basic Information for CVE-2023-35934

Vulnerability Information
Have questions about the vulnerability? See if Shenlong's analysis helps!
View Shenlong Deep Dive ↗

Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.

Vulnerability Title
yt-dlp File Downloader cookie leak
Source: CVE Program / CVE List V5
Vulnerability Description
yt-dlp is a command-line program to download videos from video sites. During file downloads, yt-dlp or the external downloaders that yt-dlp employs may leak cookies on HTTP redirects to a different host, or leak them when the host for download fragments differs from their parent manifest's host. This vulnerable behavior is present in yt-dlp prior to 2023.07.06 and nightly 2023.07.06.185519. All native and external downloaders are affected, except for `curl` and `httpie` (version 3.1.0 or later). At the file download stage, all cookies are passed by yt-dlp to the file downloader as a `Cookie` header, thereby losing their scope. This also occurs in yt-dlp's info JSON output, which may be used by external tools. As a result, the downloader or external tool may indiscriminately send cookies with requests to domains or paths for which the cookies are not scoped. yt-dlp version 2023.07.06 and nightly 2023.07.06.185519 fix this issue by removing the `Cookie` header upon HTTP redirects; having native downloaders calculate the `Cookie` header from the cookiejar, utilizing external downloaders' built-in support for cookies instead of passing them as header arguments, disabling HTTP redirectiong if the external downloader does not have proper cookie support, processing cookies passed as HTTP headers to limit their scope, and having a separate field for cookies in the info dict storing more information about scoping Some workarounds are available for those who are unable to upgrade. Avoid using cookies and user authentication methods. While extractors may set custom cookies, these usually do not contain sensitive information. Alternatively, avoid using `--load-info-json`. Or, if authentication is a must: verify the integrity of download links from unknown sources in browser (including redirects) before passing them to yt-dlp; use `curl` as external downloader, since it is not impacted; and/or avoid fragmented formats such as HLS/m3u8, DASH/mpd and ISM.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:N/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
信息暴露
Source: CVE Program / CVE List V5
Vulnerability Title
yt-dlp 信息泄露漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
yt-dlp是基于现在不活动的youtube-dlc 的youtube-dl分支。 yt-dlp 2023.07.06 版本之前存在信息泄露漏洞，该漏洞源于该应用使用的外部下载器可能会在 HTTP 重定向到其他主机时泄漏 cookie。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
yt-dlp yt-dlp yt-dlp < 2023.07.06 -

II. Public POCs for CVE-2023-35934

# POC Description Source Link Shenlong Link
AI-Generated POC Premium

No public POC found.

Login to generate AI POC

III. Intelligence Information for CVE-2023-35934

请登录查看更多情报信息。

Patches & Fixes for CVE-2023-35934 (3)

Vendor Advisories for CVE-2023-35934 (1)

Mailing List Discussions for CVE-2023-35934 (4)

Other References for CVE-2023-35934 (2)

IV. Related Vulnerabilities

Same product: yt-dlp
Same vendor: yt-dlp
Same weakness: CWE-200

V. Comments for CVE-2023-35934

No comments yet

Leave a comment