fkie_cve-2017-5551
Vulnerability from fkie_nvd
Published
2017-02-06 06:59
Modified
2024-11-21 03:27
Severity ?
Summary
The simple_set_acl function in fs/posix_acl.c in the Linux kernel before 4.9.6 preserves the setgid bit during a setxattr call involving a tmpfs filesystem, which allows local users to gain group privileges by leveraging the existence of a setgid program with restrictions on execute permissions. NOTE: this vulnerability exists because of an incomplete fix for CVE-2016-7097.
References
Impacted products
Vendor | Product | Version | |
---|---|---|---|
linux | linux_kernel | * |
{ "configurations": [ { "nodes": [ { "cpeMatch": [ { "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "56274F09-9AD1-471A-8663-69116F7C8615", "versionEndIncluding": "4.9.5", "vulnerable": true } ], "negate": false, "operator": "OR" } ] } ], "cveTags": [], "descriptions": [ { "lang": "en", "value": "The simple_set_acl function in fs/posix_acl.c in the Linux kernel before 4.9.6 preserves the setgid bit during a setxattr call involving a tmpfs filesystem, which allows local users to gain group privileges by leveraging the existence of a setgid program with restrictions on execute permissions. NOTE: this vulnerability exists because of an incomplete fix for CVE-2016-7097." }, { "lang": "es", "value": "La funci\u00f3n simple_set_acl en fs/posix_acl.c en el kernel de Linux en versiones anteriores a 4.9.6 preserva el bit setgid durante una llamada setxattr que implica un sistema de archivos tmpfs, lo que permite a usuarios locales obtener privilegios de grupo aprovechando la existencia de un programa setgid con restricciones sobre los permisos de ejecuci\u00f3n. NOTA: esta vulnerabilidad existe debido a una soluci\u00f3n incompleta para CVE-2016-7097." } ], "id": "CVE-2017-5551", "lastModified": "2024-11-21T03:27:52.603", "metrics": { "cvssMetricV2": [ { "acInsufInfo": false, "baseSeverity": "LOW", "cvssData": { "accessComplexity": "LOW", "accessVector": "LOCAL", "authentication": "NONE", "availabilityImpact": "NONE", "baseScore": 3.6, "confidentialityImpact": "PARTIAL", "integrityImpact": "PARTIAL", "vectorString": "AV:L/AC:L/Au:N/C:P/I:P/A:N", "version": "2.0" }, "exploitabilityScore": 3.9, "impactScore": 4.9, "obtainAllPrivilege": false, "obtainOtherPrivilege": false, "obtainUserPrivilege": false, "source": "nvd@nist.gov", "type": "Primary", "userInteractionRequired": false } ], "cvssMetricV30": [ { "cvssData": { "attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "NONE", "baseScore": 4.4, "baseSeverity": "MEDIUM", "confidentialityImpact": "LOW", "integrityImpact": "LOW", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N", "version": "3.0" }, "exploitabilityScore": 1.8, "impactScore": 2.5, "source": "nvd@nist.gov", "type": "Primary" } ] }, "published": "2017-02-06T06:59:00.717", "references": [ { "source": "cve@mitre.org", "tags": [ "Issue Tracking", "Patch", "Third Party Advisory" ], "url": "http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=497de07d89c1410d76a15bec2bb41f24a2a89f31" }, { "source": "cve@mitre.org", "url": "http://www.debian.org/security/2017/dsa-3791" }, { "source": "cve@mitre.org", "tags": [ "Release Notes", "Vendor Advisory" ], "url": "http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.9.6" }, { "source": "cve@mitre.org", "tags": [ "Mailing List", "Patch", "Third Party Advisory" ], "url": "http://www.openwall.com/lists/oss-security/2017/01/21/3" }, { "source": "cve@mitre.org", "tags": [ "Third Party Advisory", "VDB Entry" ], "url": "http://www.securityfocus.com/bid/95717" }, { "source": "cve@mitre.org", "url": "http://www.securitytracker.com/id/1038053" }, { "source": "cve@mitre.org", "tags": [ "Issue Tracking", "Patch" ], "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1416126" }, { "source": "cve@mitre.org", "tags": [ "Issue Tracking", "Patch", "Third Party Advisory" ], "url": "https://github.com/torvalds/linux/commit/497de07d89c1410d76a15bec2bb41f24a2a89f31" }, { "source": "af854a3a-2127-422b-91ae-364da2661108", "tags": [ "Issue Tracking", "Patch", "Third Party Advisory" ], "url": "http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=497de07d89c1410d76a15bec2bb41f24a2a89f31" }, { "source": "af854a3a-2127-422b-91ae-364da2661108", "url": "http://www.debian.org/security/2017/dsa-3791" }, { "source": "af854a3a-2127-422b-91ae-364da2661108", "tags": [ "Release Notes", "Vendor Advisory" ], "url": "http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.9.6" }, { "source": "af854a3a-2127-422b-91ae-364da2661108", "tags": [ "Mailing List", "Patch", "Third Party Advisory" ], "url": "http://www.openwall.com/lists/oss-security/2017/01/21/3" }, { "source": "af854a3a-2127-422b-91ae-364da2661108", "tags": [ "Third Party Advisory", "VDB Entry" ], "url": "http://www.securityfocus.com/bid/95717" }, { "source": "af854a3a-2127-422b-91ae-364da2661108", "url": "http://www.securitytracker.com/id/1038053" }, { "source": "af854a3a-2127-422b-91ae-364da2661108", "tags": [ "Issue Tracking", "Patch" ], "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1416126" }, { "source": "af854a3a-2127-422b-91ae-364da2661108", "tags": [ "Issue Tracking", "Patch", "Third Party Advisory" ], "url": "https://github.com/torvalds/linux/commit/497de07d89c1410d76a15bec2bb41f24a2a89f31" } ], "sourceIdentifier": "cve@mitre.org", "vulnStatus": "Modified", "weaknesses": [ { "description": [ { "lang": "en", "value": "NVD-CWE-noinfo" } ], "source": "nvd@nist.gov", "type": "Primary" } ] }
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Sightings
Author | Source | Type | Date |
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Nomenclature
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- Confirmed: The vulnerability is confirmed from an analyst perspective.
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- Not patched: This vulnerability was not successfully patched by the user reporting the sighting.