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{"cveTags": [], "descriptions": [{"lang": "en", "value": "Allows arbitrary filesystem writes outside the extraction directory during extraction with filter=\"data\".\n\n\nYou are affected by this vulnerability if using the tarfile\u00a0module to extract untrusted tar archives using TarFile.extractall()\u00a0or TarFile.extract()\u00a0using the filter=\u00a0parameter with a value of \"data\"\u00a0or \"tar\". See the tarfile extraction filters documentation https://docs.python.org/3/library/tarfile.html#tarfile-extraction-filter \u00a0for more information.\n\nNote that for Python 3.14 or later the default value of filter=\u00a0changed from \"no filtering\" to `\"data\", so if you are relying on this new default behavior then your usage is also affected.\n\nNote that none of these vulnerabilities significantly affect the installation of source distributions which are tar archives as source distributions already allow arbitrary code execution during the build process. However when evaluating source distributions it's important to avoid installing source distributions with suspicious links."}, {"lang": "es", "value": "Permite escrituras arbitrarias en el sistema de archivos fuera del directorio de extracci\u00f3n durante la extracci\u00f3n con filter=\"data\". Esta vulnerabilidad afecta al usuario si utiliza el m\u00f3dulo tarfile para extraer archivos tar no confiables mediante TarFile.extractall() o TarFile.extract() y el par\u00e1metro filter= con el valor \"data\" o \"tar\". Consulte la documentaci\u00f3n sobre filtros de extracci\u00f3n de archivos tar (https://docs.python.org/3/library/tarfile.html#tarfile-extraction-filter) para obtener m\u00e1s informaci\u00f3n. Solo las versiones de Python 3.12 o posteriores se ven afectadas por estas vulnerabilidades; las versiones anteriores no incluyen la funci\u00f3n de filtro de extracci\u00f3n. Tenga en cuenta que, para Python 3.14 o posteriores, el valor predeterminado de filter= cambi\u00f3 de \"sin filtrado\" a \"data\", por lo que si utiliza este nuevo comportamiento predeterminado, su uso tambi\u00e9n se ver\u00e1 afectado. Tenga en cuenta que ninguna de estas vulnerabilidades afecta significativamente la instalaci\u00f3n de distribuciones fuente que son archivos tar, ya que estas permiten la ejecuci\u00f3n de c\u00f3digo arbitrario durante el proceso de compilaci\u00f3n. Sin embargo, al evaluar distribuciones de origen es importante evitar instalar distribuciones de origen con enlaces sospechosos."}], "id": "CVE-2025-4517", "lastModified": "2025-06-05T14:15:33.050", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "LOW", "baseScore": 9.4, "baseSeverity": "CRITICAL", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:L", "version": "3.1"}, "exploitabilityScore": 3.9, "impactScore": 5.5, "source": "cna@python.org", "type": "Secondary"}]}, "published": "2025-06-03T13:15:20.837", "references": [{"source": "cna@python.org", "url": "https://gist.github.com/sethmlarson/52398e33eff261329a0180ac1d54f42f"}, {"source": "cna@python.org", "url": "https://github.com/python/cpython/commit/19de092debb3d7e832e5672cc2f7b788d35951da"}, {"source": "cna@python.org", "url": "https://github.com/python/cpython/commit/28463dba112af719df1e8b0391c46787ad756dd9"}, {"source": "cna@python.org", "url": "https://github.com/python/cpython/commit/3612d8f51741b11f36f8fb0494d79086bac9390a"}, {"source": "cna@python.org", "url": "https://github.com/python/cpython/commit/4633f3f497b1ff70e4a35b6fe2c907cbe2d4cb2e"}, {"source": "cna@python.org", "url": "https://github.com/python/cpython/commit/9c1110ef6652687d7c55f590f909720eddde965a"}, {"source": "cna@python.org", "url": "https://github.com/python/cpython/commit/9e0ac76d96cf80b49055f6d6b9a6763fb9215c2a"}, {"source": "cna@python.org", "url": "https://github.com/python/cpython/commit/aa9eb5f757ceff461e6e996f12c89e5d9b583b01"}, {"source": "cna@python.org", "url": "https://github.com/python/cpython/commit/dd8f187d0746da151e0025c51680979ac5b4cfb1"}, {"source": "cna@python.org", "url": "https://github.com/python/cpython/issues/135034"}, {"source": "cna@python.org", "url": "https://github.com/python/cpython/pull/135037"}, {"source": "cna@python.org", "url": "https://mail.python.org/archives/list/security-announce@python.org/thread/MAXIJJCUUMCL7ATZNDVEGGHUMQMUUKLG/"}], "sourceIdentifier": "cna@python.org", "vulnStatus": "Awaiting Analysis", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-22"}], "source": "cna@python.org", "type": "Secondary"}]}

{"affected_release": [{"advisory": "RHSA-2025:10140", "cpe": "cpe:/o:redhat:enterprise_linux:10.0", "package": "python3.12-0:3.12.9-2.el10_0.2", "product_name": "Red Hat Enterprise Linux 10", "release_date": "2025-07-01T00:00:00Z"}, {"advisory": "RHSA-2025:10026", "cpe": "cpe:/a:redhat:enterprise_linux:8", "package": "python3.11-0:3.11.13-1.el8_10", "product_name": "Red Hat Enterprise Linux 8", "release_date": "2025-07-01T00:00:00Z"}, {"advisory": "RHSA-2025:10031", "cpe": "cpe:/a:redhat:enterprise_linux:8", "package": "python3.12-0:3.12.11-1.el8_10", "product_name": "Red Hat Enterprise Linux 8", "release_date": "2025-07-01T00:00:00Z"}, {"advisory": "RHSA-2025:10128", "cpe": "cpe:/a:redhat:enterprise_linux:8", "package": "python3-0:3.6.8-70.el8_10", "product_name": "Red Hat Enterprise Linux 8", "release_date": "2025-07-01T00:00:00Z"}, {"advisory": "RHSA-2025:10128", "cpe": "cpe:/o:redhat:enterprise_linux:8", "package": "python3-0:3.6.8-70.el8_10", "product_name": "Red Hat Enterprise Linux 8", "release_date": "2025-07-01T00:00:00Z"}, {"advisory": "RHSA-2025:10136", "cpe": "cpe:/a:redhat:enterprise_linux:9", "package": "python3.9-0:3.9.21-2.el9_6.1", "product_name": "Red Hat Enterprise Linux 9", "release_date": "2025-07-01T00:00:00Z"}, {"advisory": "RHSA-2025:10148", "cpe": "cpe:/a:redhat:enterprise_linux:9", "package": "python3.11-0:3.11.11-2.el9_6.1", "product_name": "Red Hat Enterprise Linux 9", "release_date": "2025-07-01T00:00:00Z"}, {"advisory": "RHSA-2025:10189", "cpe": "cpe:/a:redhat:enterprise_linux:9", "package": "python3.12-0:3.12.9-1.el9_6.1", "product_name": "Red Hat Enterprise Linux 9", "release_date": "2025-07-02T00:00:00Z"}, {"advisory": "RHSA-2025:10136", "cpe": "cpe:/o:redhat:enterprise_linux:9", "package": "python3.9-0:3.9.21-2.el9_6.1", "product_name": "Red Hat Enterprise Linux 9", "release_date": "2025-07-01T00:00:00Z"}, {"advisory": "RHSA-2025:10028", "cpe": "cpe:/a:redhat:rhel_eus:9.4", "package": "python3.12-0:3.12.1-4.el9_4.6", "product_name": "Red Hat Enterprise Linux 9.4 Extended Update Support", "release_date": "2025-07-01T00:00:00Z"}, {"advisory": "RHSA-2025:9918", "cpe": "cpe:/a:redhat:rhel_eus:9.4", "package": "python3.11-0:3.11.7-1.el9_4.8", "product_name": "Red Hat Enterprise Linux 9.4 Extended Update Support", "release_date": "2025-06-30T00:00:00Z"}], "bugzilla": {"description": "python: cpython: Arbitrary writes via tarfile realpath overflow", "id": "2370016", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2370016"}, "csaw": false, "cvss3": {"cvss3_base_score": "7.6", "cvss3_scoring_vector": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:L", "status": "verified"}, "cwe": "CWE-22", "details": ["Allows arbitrary filesystem writes outside the extraction directory during extraction with filter=\"data\".\nYou are affected by this vulnerability if using the tarfile\u00a0module to extract untrusted tar archives using TarFile.extractall()\u00a0or TarFile.extract()\u00a0using the filter=\u00a0parameter with a value of \"data\"\u00a0or \"tar\". See the tarfile extraction filters documentation https://docs.python.org/3/library/tarfile.html#tarfile-extraction-filter \u00a0for more information.\nNote that for Python 3.14 or later the default value of filter=\u00a0changed from \"no filtering\" to `\"data\", so if you are relying on this new default behavior then your usage is also affected.\nNote that none of these vulnerabilities significantly affect the installation of source distributions which are tar archives as source distributions already allow arbitrary code execution during the build process. However when evaluating source distributions it's important to avoid installing source distributions with suspicious links.", "A flaw was found in the CPython tarfile module. This vulnerability allows arbitrary filesystem writes outside the extraction directory via extracting untrusted tar archives using the TarFile.extractall() or TarFile.extract() methods with the extraction filter parameter set to \"data\" or \"tar\"."], "mitigation": {"lang": "en:us", "value": "Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability."}, "name": "CVE-2025-4517", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "python36:3.6/python36", "product_name": "Red Hat Enterprise Linux 8"}], "public_date": "2025-06-03T12:58:50Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2025-4517\nhttps://nvd.nist.gov/vuln/detail/CVE-2025-4517\nhttps://gist.github.com/sethmlarson/52398e33eff261329a0180ac1d54f42f\nhttps://github.com/python/cpython/commit/3612d8f51741b11f36f8fb0494d79086bac9390a\nhttps://github.com/python/cpython/commit/9e0ac76d96cf80b49055f6d6b9a6763fb9215c2a\nhttps://github.com/python/cpython/issues/135034\nhttps://github.com/python/cpython/pull/135037\nhttps://mail.python.org/archives/list/security-announce@python.org/thread/MAXIJJCUUMCL7ATZNDVEGGHUMQMUUKLG/"], "statement": "The severity of this vulnerability was lowered due to the fact that successful exploitation requires the attacker to convince a privileged user or process to extract a malicious tar file. Since tar file extraction typically occurs in trusted contexts or with elevated privileges, the impact is reduced by the requirement of such access.\nVersions of python36:3.6/python36 as shipped with Red Hat Enterprise Linux 8 are marked as 'Not affected' as they just provide \"symlinks\" to the main python3 component, which provides the actual interpreter of the Python programming language.", "threat_severity": "Important"}