Vulnerability Description
yt-dlp is a youtube-dl fork with additional features and fixes. The patch that addressed CVE-2023-40581 attempted to prevent RCE when using `--exec` with `%q` by replacing double quotes with two double quotes. However, this escaping is not sufficient, and still allows expansion of environment variables. Support for output template expansion in `--exec`, along with this vulnerable behavior, was added to `yt-dlp` in version 2021.04.11. yt-dlp version 2024.04.09 fixes this issue by properly escaping `%`. It replaces them with `%%cd:~,%`, a variable that expands to nothing, leaving only the leading percent. It is recommended to upgrade yt-dlp to version 2024.04.09 as soon as possible. Also, always be careful when using `--exec`, because while this specific vulnerability has been patched, using unvalidated input in shell commands is inherently dangerous. For Windows users who are not able to upgrade, avoid using any output template expansion in `--exec` other than `{}` (filepath); if expansion in `--exec` is needed, verify the fields you are using do not contain `"`, `|` or `&`; and/or instead of using `--exec`, write the info json and load the fields from it instead.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Yt-Dlp Project | Yt-Dlp | >= 2021.04.11, < 2024.04.09 |
Related Weaknesses (CWE)
References
- https://github.com/yt-dlp/yt-dlp/commit/de015e930747165dbb8fcd360f8775fd973b7d6ePatch
- https://github.com/yt-dlp/yt-dlp/commit/ff07792676f404ffff6ee61b5638c9dc1a33a37aPatch
- https://github.com/yt-dlp/yt-dlp/releases/tag/2021.04.11ProductRelease Notes
- https://github.com/yt-dlp/yt-dlp/releases/tag/2024.04.09ProductRelease Notes
- https://github.com/yt-dlp/yt-dlp/security/advisories/GHSA-42h4-v29r-42qgNot Applicable
- https://github.com/yt-dlp/yt-dlp/security/advisories/GHSA-hjq6-52gw-2g7pExploitVendor Advisory
- https://www.kb.cert.org/vuls/id/123335Third Party Advisory
- https://github.com/yt-dlp/yt-dlp/commit/de015e930747165dbb8fcd360f8775fd973b7d6ePatch
- https://github.com/yt-dlp/yt-dlp/commit/ff07792676f404ffff6ee61b5638c9dc1a33a37aPatch
- https://github.com/yt-dlp/yt-dlp/releases/tag/2021.04.11ProductRelease Notes
- https://github.com/yt-dlp/yt-dlp/releases/tag/2024.04.09ProductRelease Notes
- https://github.com/yt-dlp/yt-dlp/security/advisories/GHSA-42h4-v29r-42qgNot Applicable
- https://github.com/yt-dlp/yt-dlp/security/advisories/GHSA-hjq6-52gw-2g7pExploitVendor Advisory
- https://www.kb.cert.org/vuls/id/123335Third Party Advisory
FAQ
What is CVE-2024-22423?
CVE-2024-22423 is a vulnerability with a CVSS score of 8.3 (HIGH). yt-dlp is a youtube-dl fork with additional features and fixes. The patch that addressed CVE-2023-40581 attempted to prevent RCE when using `--exec` with `%q` by replacing double quotes with two doubl...
How severe is CVE-2024-22423?
CVE-2024-22423 has been rated HIGH with a CVSS base score of 8.3/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2024-22423?
Check the references section above for vendor advisories and patch information. Affected products include: Yt-Dlp Project Yt-Dlp.