{"dataType":"CVE_RECORD","dataVersion":"5.1","cveMetadata":{"cveId":"CVE-2023-40581","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","state":"PUBLISHED","assignerShortName":"GitHub_M","dateReserved":"2023-08-16T18:24:02.391Z","datePublished":"2023-09-25T18:54:00.204Z","dateUpdated":"2024-09-24T14:48:55.952Z"},"containers":{"cna":{"title":"yt-dlp command injection when using `%q` in `--exec` on Windows","problemTypes":[{"descriptions":[{"cweId":"CWE-78","lang":"en","description":"CWE-78: Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')","type":"CWE"}]}],"metrics":[{"cvssV3_1":{"attackComplexity":"HIGH","attackVector":"NETWORK","availabilityImpact":"HIGH","baseScore":8.4,"baseSeverity":"HIGH","confidentialityImpact":"HIGH","integrityImpact":"HIGH","privilegesRequired":"NONE","scope":"CHANGED","userInteraction":"REQUIRED","vectorString":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:H","version":"3.1"}}],"references":[{"name":"https://github.com/yt-dlp/yt-dlp/security/advisories/GHSA-42h4-v29r-42qg","tags":["x_refsource_CONFIRM"],"url":"https://github.com/yt-dlp/yt-dlp/security/advisories/GHSA-42h4-v29r-42qg"},{"name":"https://github.com/yt-dlp/yt-dlp/commit/de015e930747165dbb8fcd360f8775fd973b7d6e","tags":["x_refsource_MISC"],"url":"https://github.com/yt-dlp/yt-dlp/commit/de015e930747165dbb8fcd360f8775fd973b7d6e"},{"name":"https://github.com/yt-dlp/yt-dlp-nightly-builds/releases/tag/2023.09.24.003044","tags":["x_refsource_MISC"],"url":"https://github.com/yt-dlp/yt-dlp-nightly-builds/releases/tag/2023.09.24.003044"},{"name":"https://github.com/yt-dlp/yt-dlp/releases/tag/2021.04.11","tags":["x_refsource_MISC"],"url":"https://github.com/yt-dlp/yt-dlp/releases/tag/2021.04.11"},{"name":"https://github.com/yt-dlp/yt-dlp/releases/tag/2023.09.24","tags":["x_refsource_MISC"],"url":"https://github.com/yt-dlp/yt-dlp/releases/tag/2023.09.24"}],"affected":[{"vendor":"yt-dlp","product":"yt-dlp","versions":[{"version":">= 2021.04.11, < 2023.09.24","status":"affected"},{"version":"< nightly 2023.09.24.003044","status":"affected"}]}],"providerMetadata":{"orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","shortName":"GitHub_M","dateUpdated":"2023-09-25T18:54:00.204Z"},"descriptions":[{"lang":"en","value":"yt-dlp is a youtube-dl fork with additional features and fixes. yt-dlp allows the user to provide shell command lines to be executed at various stages in its download steps through the `--exec` flag. This flag allows output template expansion in its argument, so that metadata values may be used in the shell commands. The metadata fields can be combined with the `%q` conversion, which is intended to quote/escape these values so they can be safely passed to the shell. However, the escaping used for `cmd` (the shell used by Python's `subprocess` on Windows) does not properly escape special characters, which can allow for remote code execution if `--exec` is used directly with maliciously crafted remote data. This vulnerability only impacts `yt-dlp` on Windows, and the vulnerability is present regardless of whether `yt-dlp` is run from `cmd` or from `PowerShell`. 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 2023.09.24 fixes this issue by properly escaping each special character. `\\n` will be replaced by `\\r` as no way of escaping it has been found. It is recommended to upgrade yt-dlp to version 2023.09.24 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: 1. Avoid using any output template expansion in --exec other than {} (filepath). 2. If expansion in --exec is needed, verify the fields you are using do not contain \", | or &. 3. Instead of using --exec, write the info json and load the fields from it instead.\n"}],"source":{"advisory":"GHSA-42h4-v29r-42qg","discovery":"UNKNOWN"}},"adp":[{"providerMetadata":{"orgId":"af854a3a-2127-422b-91ae-364da2661108","shortName":"CVE","dateUpdated":"2024-08-02T18:38:50.806Z"},"title":"CVE Program Container","references":[{"name":"https://github.com/yt-dlp/yt-dlp/security/advisories/GHSA-42h4-v29r-42qg","tags":["x_refsource_CONFIRM","x_transferred"],"url":"https://github.com/yt-dlp/yt-dlp/security/advisories/GHSA-42h4-v29r-42qg"},{"name":"https://github.com/yt-dlp/yt-dlp/commit/de015e930747165dbb8fcd360f8775fd973b7d6e","tags":["x_refsource_MISC","x_transferred"],"url":"https://github.com/yt-dlp/yt-dlp/commit/de015e930747165dbb8fcd360f8775fd973b7d6e"},{"name":"https://github.com/yt-dlp/yt-dlp-nightly-builds/releases/tag/2023.09.24.003044","tags":["x_refsource_MISC","x_transferred"],"url":"https://github.com/yt-dlp/yt-dlp-nightly-builds/releases/tag/2023.09.24.003044"},{"name":"https://github.com/yt-dlp/yt-dlp/releases/tag/2021.04.11","tags":["x_refsource_MISC","x_transferred"],"url":"https://github.com/yt-dlp/yt-dlp/releases/tag/2021.04.11"},{"name":"https://github.com/yt-dlp/yt-dlp/releases/tag/2023.09.24","tags":["x_refsource_MISC","x_transferred"],"url":"https://github.com/yt-dlp/yt-dlp/releases/tag/2023.09.24"}]},{"affected":[{"vendor":"yt-dlp_project","product":"yt-dlp","cpes":["cpe:2.3:a:yt-dlp_project:yt-dlp:-:*:*:*:*:*:*:*"],"defaultStatus":"unknown","versions":[{"version":"2021.04.11","status":"affected","lessThan":"2023.09.24","versionType":"custom"},{"version":"0","status":"affected","lessThan":"nightly 2023.09.24.003044","versionType":"custom"}]}],"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2024-09-24T14:45:30.642943Z","id":"CVE-2023-40581","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"total"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"title":"CISA ADP Vulnrichment","providerMetadata":{"orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP","dateUpdated":"2024-09-24T14:48:55.952Z"}}]}}