{ "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" } } ] } }