2 lines
6.2 KiB
JSON
2 lines
6.2 KiB
JSON
{"affected":[{"affectedData":[{"product":"util-linux","vendor":"n/a","versions":[{"status":"affected","version":"Fixed in util-linux v2.37.3"}]}],"source":"secalert@redhat.com"}],"configurations":[{"nodes":[{"cpeMatch":[{"criteria":"cpe:2.3:a:kernel:util-linux:*:*:*:*:*:*:*:*","matchCriteriaId":"755D0AAC-24D9-4B39-BCC2-06AC9FF889E2","versionEndExcluding":"2.37.3","versionStartIncluding":"2.34","vulnerable":true}],"negate":false,"operator":"OR"}]},{"nodes":[{"cpeMatch":[{"criteria":"cpe:2.3:o:fedoraproject:fedora:35:*:*:*:*:*:*:*","matchCriteriaId":"80E516C0-98A4-4ADE-B69F-66A772E2BAAA","vulnerable":true}],"negate":false,"operator":"OR"}]}],"cveTags":[],"descriptions":[{"lang":"en","value":"A logic error was found in the libmount library of util-linux in the function that allows an unprivileged user to unmount a FUSE filesystem. This flaw allows a local user on a vulnerable system to unmount other users' filesystems that are either world-writable themselves (like /tmp) or mounted in a world-writable directory. An attacker may use this flaw to cause a denial of service to applications that use the affected filesystems."},{"lang":"es","value":"Se ha encontrado un error lógico en la biblioteca libmount de util-linux en la función que permite a un usuario no privilegiado desmontar un sistema de archivos FUSE. Este fallo permite a un usuario local en un sistema vulnerable desmontar los sistemas de archivos de otros usuarios que son de escritura mundial (como /tmp) o que están montados en un directorio de escritura mundial. Un atacante puede usar este fallo para causar una denegación de servicio a las aplicaciones que usan los sistemas de archivos afectados."}],"id":"CVE-2021-3996","lastModified":"2026-06-17T04:06:21.753","metrics":{"cvssMetricV31":[{"cvssData":{"attackComplexity":"LOW","attackVector":"LOCAL","availabilityImpact":"HIGH","baseScore":5.5,"baseSeverity":"MEDIUM","confidentialityImpact":"NONE","integrityImpact":"NONE","privilegesRequired":"LOW","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","version":"3.1"},"exploitabilityScore":1.8,"impactScore":3.6,"source":"nvd@nist.gov","type":"Primary"},{"cvssData":{"attackComplexity":"LOW","attackVector":"LOCAL","availabilityImpact":"HIGH","baseScore":5.5,"baseSeverity":"MEDIUM","confidentialityImpact":"NONE","integrityImpact":"NONE","privilegesRequired":"LOW","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","version":"3.1"},"exploitabilityScore":1.8,"impactScore":3.6,"source":"134c704f-9b21-4f2e-91b3-4a467353bcc0","type":"Secondary"}],"ssvcV203":[{"source":"134c704f-9b21-4f2e-91b3-4a467353bcc0","ssvcData":{"id":"CVE-2021-3996","options":[{"exploitation":"poc"},{"automatable":"no"},{"technicalImpact":"partial"}],"role":"CISA Coordinator","timestamp":"2024-03-04T21:16:28.797475Z","version":"2.0.3"}}]},"published":"2022-08-23T20:15:08.560","references":[{"source":"secalert@redhat.com","tags":["Third Party Advisory"],"url":"http://packetstormsecurity.com/files/170176/snap-confine-must_mkdir_and_open_with_perms-Race-Condition.html"},{"source":"secalert@redhat.com","tags":["Mailing List","Third Party Advisory"],"url":"http://seclists.org/fulldisclosure/2022/Dec/4"},{"source":"secalert@redhat.com","tags":["Mailing List","Third Party Advisory"],"url":"http://www.openwall.com/lists/oss-security/2022/11/30/2"},{"source":"secalert@redhat.com","tags":["Issue Tracking","Third Party Advisory"],"url":"https://access.redhat.com/security/cve/CVE-2021-3996"},{"source":"secalert@redhat.com","tags":["Issue Tracking","Patch","Third Party Advisory"],"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2024628"},{"source":"secalert@redhat.com","tags":["Patch","Third Party Advisory"],"url":"https://github.com/util-linux/util-linux/commit/166e87368ae88bf31112a30e078cceae637f4cdb"},{"source":"secalert@redhat.com","tags":["Release Notes","Vendor Advisory"],"url":"https://mirrors.edge.kernel.org/pub/linux/utils/util-linux/v2.37/v2.37.3-ReleaseNotes"},{"source":"secalert@redhat.com","url":"https://security.gentoo.org/glsa/202401-08"},{"source":"secalert@redhat.com","tags":["Broken Link","Third Party Advisory"],"url":"https://security.netapp.com/advisory/ntap-20221209-0002/"},{"source":"secalert@redhat.com","tags":["Exploit","Mailing List","Patch","Third Party Advisory"],"url":"https://www.openwall.com/lists/oss-security/2022/01/24/2"},{"source":"af854a3a-2127-422b-91ae-364da2661108","tags":["Third Party Advisory"],"url":"http://packetstormsecurity.com/files/170176/snap-confine-must_mkdir_and_open_with_perms-Race-Condition.html"},{"source":"af854a3a-2127-422b-91ae-364da2661108","tags":["Mailing List","Third Party Advisory"],"url":"http://seclists.org/fulldisclosure/2022/Dec/4"},{"source":"af854a3a-2127-422b-91ae-364da2661108","tags":["Mailing List","Third Party Advisory"],"url":"http://www.openwall.com/lists/oss-security/2022/11/30/2"},{"source":"af854a3a-2127-422b-91ae-364da2661108","tags":["Issue Tracking","Third Party Advisory"],"url":"https://access.redhat.com/security/cve/CVE-2021-3996"},{"source":"af854a3a-2127-422b-91ae-364da2661108","tags":["Issue Tracking","Patch","Third Party Advisory"],"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2024628"},{"source":"af854a3a-2127-422b-91ae-364da2661108","tags":["Patch","Third Party Advisory"],"url":"https://github.com/util-linux/util-linux/commit/166e87368ae88bf31112a30e078cceae637f4cdb"},{"source":"af854a3a-2127-422b-91ae-364da2661108","tags":["Release Notes","Vendor Advisory"],"url":"https://mirrors.edge.kernel.org/pub/linux/utils/util-linux/v2.37/v2.37.3-ReleaseNotes"},{"source":"af854a3a-2127-422b-91ae-364da2661108","url":"https://security.gentoo.org/glsa/202401-08"},{"source":"af854a3a-2127-422b-91ae-364da2661108","tags":["Broken Link","Third Party Advisory"],"url":"https://security.netapp.com/advisory/ntap-20221209-0002/"},{"source":"af854a3a-2127-422b-91ae-364da2661108","tags":["Exploit","Mailing List","Patch","Third Party Advisory"],"url":"https://www.openwall.com/lists/oss-security/2022/01/24/2"}],"sourceIdentifier":"secalert@redhat.com","vulnStatus":"Modified","weaknesses":[{"description":[{"lang":"en","value":"CWE-552"}],"source":"secalert@redhat.com","type":"Secondary"},{"description":[{"lang":"en","value":"CWE-552"}],"source":"nvd@nist.gov","type":"Secondary"}]}
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