{"containers": {"cna": {"affected": [{"product": "node-tar", "vendor": "npm", "versions": [{"status": "affected", "version": "< 4.4.18"}, {"status": "affected", "version": ">= 5.0.0, < 5.0.10"}, {"status": "affected", "version": ">= 6.0.0, < 6.1.9"}]}], "descriptions": [{"lang": "en", "value": "The npm package \"tar\" (aka node-tar) before versions 4.4.18, 5.0.10, and 6.1.9 has an arbitrary file creation/overwrite and arbitrary code execution vulnerability. node-tar aims to guarantee that any file whose location would be outside of the extraction target directory is not extracted. This is, in part, accomplished by sanitizing absolute paths of entries within the archive, skipping archive entries that contain `..` path portions, and resolving the sanitized paths against the extraction target directory. 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If you are still using a v3 release we recommend you update to a more recent version of node-tar. There is no reasonable way to work around this issue without performing the same path normalization procedures that node-tar now does. Users are encouraged to upgrade to the latest patched versions of node-tar, rather than attempt to sanitize paths themselves."}], "metrics": [{"cvssV3_1": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "NONE", "baseScore": 8.2, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "CHANGED", "userInteraction": "REQUIRED", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:N", "version": "3.1"}}], "problemTypes": [{"descriptions": [{"cweId": "CWE-22", "description": "CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')", "lang": "en", "type": "CWE"}]}], "providerMetadata": {"dateUpdated": "2022-03-08T14:07:15", "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "shortName": "GitHub_M"}, "references": [{"tags": ["x_refsource_MISC"], "url": "https://www.npmjs.com/package/tar"}, {"tags": ["x_refsource_CONFIRM"], "url": "https://github.com/npm/node-tar/security/advisories/GHSA-5955-9wpr-37jh"}, {"tags": ["x_refsource_MISC"], "url": "https://www.oracle.com/security-alerts/cpuoct2021.html"}, {"tags": ["x_refsource_CONFIRM"], "url": "https://cert-portal.siemens.com/productcert/pdf/ssa-389290.pdf"}], "source": {"advisory": "GHSA-5955-9wpr-37jh", "discovery": "UNKNOWN"}, "title": "Arbitrary File Creation/Overwrite on Windows via insufficient relative path sanitization", "x_legacyV4Record": {"CVE_data_meta": {"ASSIGNER": "security-advisories@github.com", "ID": "CVE-2021-37713", "STATE": "PUBLIC", "TITLE": "Arbitrary File Creation/Overwrite on Windows via insufficient relative path sanitization"}, "affects": {"vendor": {"vendor_data": [{"product": {"product_data": [{"product_name": "node-tar", "version": {"version_data": [{"version_value": "< 4.4.18"}, {"version_value": ">= 5.0.0, < 5.0.10"}, {"version_value": ">= 6.0.0, < 6.1.9"}]}}]}, "vendor_name": "npm"}]}}, "data_format": "MITRE", "data_type": "CVE", "data_version": "4.0", "description": {"description_data": [{"lang": "eng", "value": "The npm package \"tar\" (aka node-tar) before versions 4.4.18, 5.0.10, and 6.1.9 has an arbitrary file creation/overwrite and arbitrary code execution vulnerability. node-tar aims to guarantee that any file whose location would be outside of the extraction target directory is not extracted. This is, in part, accomplished by sanitizing absolute paths of entries within the archive, skipping archive entries that contain `..` path portions, and resolving the sanitized paths against the extraction target directory. This logic was insufficient on Windows systems when extracting tar files that contained a path that was not an absolute path, but specified a drive letter different from the extraction target, such as `C:some\\path`. If the drive letter does not match the extraction target, for example `D:\\extraction\\dir`, then the result of `path.resolve(extractionDirectory, entryPath)` would resolve against the current working directory on the `C:` drive, rather than the extraction target directory. Additionally, a `..` portion of the path could occur immediately after the drive letter, such as `C:../foo`, and was not properly sanitized by the logic that checked for `..` within the normalized and split portions of the path. This only affects users of `node-tar` on Windows systems. These issues were addressed in releases 4.4.18, 5.0.10 and 6.1.9. The v3 branch of node-tar has been deprecated and did not receive patches for these issues. If you are still using a v3 release we recommend you update to a more recent version of node-tar. There is no reasonable way to work around this issue without performing the same path normalization procedures that node-tar now does. Users are encouraged to upgrade to the latest patched versions of node-tar, rather than attempt to sanitize paths themselves."}]}, "impact": {"cvss": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "NONE", "baseScore": 8.2, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "CHANGED", "userInteraction": "REQUIRED", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:N", "version": "3.1"}}, "problemtype": {"problemtype_data": [{"description": [{"lang": "eng", "value": "CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')"}]}]}, "references": {"reference_data": [{"name": "https://www.npmjs.com/package/tar", "refsource": "MISC", "url": "https://www.npmjs.com/package/tar"}, {"name": "https://github.com/npm/node-tar/security/advisories/GHSA-5955-9wpr-37jh", "refsource": "CONFIRM", "url": "https://github.com/npm/node-tar/security/advisories/GHSA-5955-9wpr-37jh"}, {"name": "https://www.oracle.com/security-alerts/cpuoct2021.html", "refsource": "MISC", "url": "https://www.oracle.com/security-alerts/cpuoct2021.html"}, {"name": "https://cert-portal.siemens.com/productcert/pdf/ssa-389290.pdf", "refsource": "CONFIRM", "url": "https://cert-portal.siemens.com/productcert/pdf/ssa-389290.pdf"}]}, "source": {"advisory": "GHSA-5955-9wpr-37jh", "discovery": "UNKNOWN"}}}}, "cveMetadata": {"assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "assignerShortName": "GitHub_M", "cveId": "CVE-2021-37713", "datePublished": "2021-08-31T16:50:09", "dateReserved": "2021-07-29T00:00:00", "dateUpdated": "2022-03-08T14:07:15", "state": "PUBLISHED"}, "dataType": "CVE_RECORD", "dataVersion": "5.0"}

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Esta l\u00f3gica era insuficiente en los sistemas Windows cuando se extra\u00edan archivos tar que conten\u00edan una ruta que no era una ruta absoluta, sino que especificaba una letra de unidad diferente del destino de extracci\u00f3n, como \"C:some\\path\". Si la letra de la unidad no coincide con el destino de la extracci\u00f3n, por ejemplo, \"D:\\extraction\\dir\", entonces el resultado de \"path.resolve(extractionDirectory, entryPath)\" se resolver\u00eda contra el directorio de trabajo actual en la unidad \"C:\", en lugar del directorio de destino de la extracci\u00f3n. Adem\u00e1s, una porci\u00f3n \"..\" de la ruta pod\u00eda aparecer inmediatamente despu\u00e9s de la letra de la unidad, como \"C:../foo\", y no era saneada apropiadamente por la l\u00f3gica que buscaba \"..\" dentro de las porciones normalizadas y divididas de la ruta. Esto s\u00f3lo afecta a los usuarios de \"node-tar\" en sistemas Windows. 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