`yt-dlp` and `youtube-dl` are command-line audio/video downloaders. Prior to the fixed versions, `yt-dlp` and `youtube-dl` do not limit the extensions of downloaded files, which could lead to arbitrary filenames being created in the download folder (and path traversal on Windows). Since `yt-dlp` and `youtube-dl` also read config from the working directory (and on Windows executables will be executed from the `yt-dlp` or `youtube-dl` directory), this could lead to arbitrary code being executed.
`yt-dlp` version 2024.07.01 fixes this issue by whitelisting the allowed extensions. `youtube-dl` fixes this issue in commit `d42a222` on the `master` branch and in nightly builds tagged 2024-07-03 or later. This might mean some very uncommon extensions might not get downloaded, however it will also limit the possible exploitation surface. In addition to upgrading, have `.%(ext)s` at the end of the output template and make sure the user trusts the websites that they are downloading from. Also, make sure to never download to a directory within PATH or other sensitive locations like one's user directory, `system32`, or other binaries locations. For users who are not able to upgrade, keep the default output template (`-o \"%(title)s [%(id)s].%(ext)s`); make sure the extension of the media to download is a common video/audio/sub/... one; try to avoid the generic extractor; and/or use `--ignore-config --config-location ...` to not load config from common locations.
"}],"value":"`yt-dlp` and `youtube-dl` are command-line audio/video downloaders. Prior to the fixed versions, `yt-dlp` and `youtube-dl` do not limit the extensions of downloaded files, which could lead to arbitrary filenames being created in the download folder (and path traversal on Windows). Since `yt-dlp` and `youtube-dl` also read config from the working directory (and on Windows executables will be executed from the `yt-dlp` or `youtube-dl` directory), this could lead to arbitrary code being executed.\n\n\n\n\n`yt-dlp` version 2024.07.01 fixes this issue by whitelisting the allowed extensions. `youtube-dl` fixes this issue in commit `d42a222` on the `master` branch and in nightly builds tagged 2024-07-03 or later. This might mean some very uncommon extensions might not get downloaded, however it will also limit the possible exploitation surface. In addition to upgrading, have `.%(ext)s` at the end of the output template and make sure the user trusts the websites that they are downloading from. Also, make sure to never download to a directory within PATH or other sensitive locations like one's user directory, `system32`, or other binaries locations. For users who are not able to upgrade, keep the default output template (`-o \"%(title)s [%(id)s].%(ext)s`); make sure the extension of the media to download is a common video/audio/sub/... one; try to avoid the generic extractor; and/or use `--ignore-config --config-location ...` to not load config from common locations."}],"metrics":[{"cvssV3_1":{"attackComplexity":"LOW","attackVector":"LOCAL","availabilityImpact":"HIGH","baseScore":7.8,"baseSeverity":"HIGH","confidentialityImpact":"HIGH","integrityImpact":"HIGH","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"REQUIRED","vectorString":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","version":"3.1"},"format":"CVSS","scenarios":[{"lang":"en","value":"GENERAL"}]}],"problemTypes":[{"descriptions":[{"cweId":"CWE-669","description":"CWE-669 Incorrect Resource Transfer Between Spheres","lang":"en","type":"CWE"}]}],"providerMetadata":{"orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","shortName":"GitHub_M","dateUpdated":"2024-07-03T23:32:13.285Z"},"references":[{"name":"https://github.com/yt-dlp/yt-dlp/security/advisories/GHSA-79w7-vh3h-8g4j","tags":["x_refsource_CONFIRM"],"url":"https://github.com/yt-dlp/yt-dlp/security/advisories/GHSA-79w7-vh3h-8g4j"},{"name":"https://github.com/yt-dlp/yt-dlp/commit/5ce582448ececb8d9c30c8c31f58330090ced03a","tags":["x_refsource_MISC"],"url":"https://github.com/yt-dlp/yt-dlp/commit/5ce582448ececb8d9c30c8c31f58330090ced03a"},{"name":"https://github.com/yt-dlp/yt-dlp/releases/tag/2024.07.01","tags":["x_refsource_MISC"],"url":"https://github.com/yt-dlp/yt-dlp/releases/tag/2024.07.01"},{"name":"https://securitylab.github.com/advisories/GHSL-2024-090_yt-dlp","tags":["x_refsource_MISC"],"url":"https://securitylab.github.com/advisories/GHSL-2024-090_yt-dlp"},{"tags":["x_refsource_MISC"],"url":"https://github.com/dirkf/youtube-dl/security/advisories/GHSA-22fp-mf44-f2mq"},{"tags":["x_refsource_MISC"],"url":"https://securitylab.github.com/advisories/GHSL-2024-089_youtube-dl/"},{"tags":["x_refsource_MISC"],"url":"https://github.com/ytdl-org/youtube-dl/pull/32830"},{"tags":["x_refsource_MISC"],"url":"https://github.com/ytdl-org/youtube-dl/commit/d42a222ed541b96649396ef00e19552aef0f09ec"}],"source":{"advisory":"GHSA-79w7-vh3h-8g4j","discovery":"UNKNOWN"},"title":"yt-dlp and youtube-dl vulnerable to file system modification and RCE through improper file-extension sanitization"},"adp":[{"affected":[{"vendor":"yt-dlp_project","product":"yt-dlp","cpes":["cpe:2.3:a:yt-dlp_project:yt-dlp:-:*:*:*:*:*:*:*"],"defaultStatus":"unknown","versions":[{"version":"0","status":"affected","lessThan":"2024.07.01","versionType":"custom"}]}],"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2024-07-02T15:17:37.665466Z","id":"CVE-2024-38519","options":[{"Exploitation":"poc"},{"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":"2024-07-24T18:21:58.650Z"}},{"providerMetadata":{"orgId":"af854a3a-2127-422b-91ae-364da2661108","shortName":"CVE","dateUpdated":"2024-08-02T04:12:25.618Z"},"title":"CVE Program Container","references":[{"name":"https://github.com/yt-dlp/yt-dlp/security/advisories/GHSA-79w7-vh3h-8g4j","tags":["x_refsource_CONFIRM","x_transferred"],"url":"https://github.com/yt-dlp/yt-dlp/security/advisories/GHSA-79w7-vh3h-8g4j"},{"name":"https://github.com/yt-dlp/yt-dlp/commit/5ce582448ececb8d9c30c8c31f58330090ced03a","tags":["x_refsource_MISC","x_transferred"],"url":"https://github.com/yt-dlp/yt-dlp/commit/5ce582448ececb8d9c30c8c31f58330090ced03a"},{"name":"https://github.com/yt-dlp/yt-dlp/releases/tag/2024.07.01","tags":["x_refsource_MISC","x_transferred"],"url":"https://github.com/yt-dlp/yt-dlp/releases/tag/2024.07.01"},{"name":"https://securitylab.github.com/advisories/GHSL-2024-090_yt-dlp","tags":["x_refsource_MISC","x_transferred"],"url":"https://securitylab.github.com/advisories/GHSL-2024-090_yt-dlp"},{"tags":["x_refsource_MISC","x_transferred"],"url":"https://github.com/dirkf/youtube-dl/security/advisories/GHSA-22fp-mf44-f2mq"},{"tags":["x_refsource_MISC","x_transferred"],"url":"https://securitylab.github.com/advisories/GHSL-2024-089_youtube-dl/"},{"tags":["x_refsource_MISC","x_transferred"],"url":"https://github.com/ytdl-org/youtube-dl/pull/32830"},{"tags":["x_refsource_MISC","x_transferred"],"url":"https://github.com/ytdl-org/youtube-dl/commit/d42a222ed541b96649396ef00e19552aef0f09ec"}]}]}}