[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"$fAwZ9G_SvlM2C8NfA6981EOypyz2NBNT1-bvBNnS5fZQ":3,"g5a-risk:CVE-2021-3996":155},{"success":4,"data":5,"meta":152},true,{"cveId":6,"title":7,"description":8,"shortDescription":9,"publishedDate":10,"lastModified":11,"cvssScore":12,"cvssVector":13,"cvssMetrics":14,"epssScore":34,"epssPercentile":27,"epssTimeSeries":35,"severity":36,"affectedProducts":37,"affectedProductsCount":48,"references":49,"referencesCount":96,"weaknesses":97,"weaknessesCount":106,"isActivelyExploited":107,"cisaInfo":27,"otxData":27,"relatedBlogPosts":108,"seoMetadata":109,"configurations":134,"relatedVendorCves":150,"notableEvents":151},"CVE-2021-3996","What is CVE-2021-3996?","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 \u002Ftmp) 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.","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...","2022-08-23T20:15:08.56","2024-10-15T16:35:00.963",5.5,"CVSS:3.1\u002FAV:L\u002FAC:L\u002FPR:L\u002FUI:N\u002FS:U\u002FC:N\u002FI:N\u002FA:H",{"CVSSMetricV31":15,"CVSSMetricV30":27,"CVSSMetricV2":27,"CVSSMetricV40":27},[16,30],{"Source":17,"Type":18,"CVSSData":19,"ExploitabilityScore":28,"ImpactScore":29},"nvd@nist.gov","Primary",{"Version":20,"VectorString":13,"AttackVector":21,"AttackComplexity":22,"PrivilegesRequired":22,"UserInteraction":23,"Scope":24,"ConfidentialityImpact":23,"IntegrityImpact":23,"AvailabilityImpact":25,"BaseScore":12,"BaseSeverity":26,"ExploitCodeMaturity":27,"RemediationLevel":27,"ReportConfidence":27,"TemporalScore":27,"TemporalSeverity":27,"ConfidentialityRequirement":27,"IntegrityRequirement":27,"AvailabilityRequirement":25,"ModifiedAttackVector":27,"ModifiedAttackComplexity":27,"ModifiedPrivilegesRequired":27,"ModifiedUserInteraction":27,"ModifiedScope":27,"ModifiedConfidentialityImpact":27,"ModifiedIntegrityImpact":27,"ModifiedAvailabilityImpact":27,"EnvironmentalScore":27,"EnvironmentalSeverity":27},"3.1","LOCAL","LOW","NONE","UNCHANGED","HIGH","MEDIUM",null,1.8,3.6,{"Source":31,"Type":32,"CVSSData":33,"ExploitabilityScore":28,"ImpactScore":29},"134c704f-9b21-4f2e-91b3-4a467353bcc0","Secondary",{"Version":20,"VectorString":13,"AttackVector":21,"AttackComplexity":22,"PrivilegesRequired":22,"UserInteraction":23,"Scope":24,"ConfidentialityImpact":23,"IntegrityImpact":23,"AvailabilityImpact":25,"BaseScore":12,"BaseSeverity":26,"ExploitCodeMaturity":27,"RemediationLevel":27,"ReportConfidence":27,"TemporalScore":27,"TemporalSeverity":27,"ConfidentialityRequirement":27,"IntegrityRequirement":27,"AvailabilityRequirement":25,"ModifiedAttackVector":27,"ModifiedAttackComplexity":27,"ModifiedPrivilegesRequired":27,"ModifiedUserInteraction":27,"ModifiedScope":27,"ModifiedConfidentialityImpact":27,"ModifiedIntegrityImpact":27,"ModifiedAvailabilityImpact":27,"EnvironmentalScore":27,"EnvironmentalSeverity":27},0.00634,[34,34,34,34,34,34,34],"Medium",[38,43],{"vendor":39,"product":40,"version":41,"criteria":42,"vulnerable":4},"kernel","util-linux","*","cpe:2.3:a:kernel:util-linux:*:*:*:*:*:*:*:*",{"vendor":44,"product":45,"version":46,"criteria":47,"vulnerable":4},"fedoraproject","fedora","35","cpe:2.3:o:fedoraproject:fedora:35:*:*:*:*:*:*:*",2,[50,55,60,64,69,73,77,83,87,92],{"url":51,"source":52,"tags":53},"http:\u002F\u002Fpacketstormsecurity.com\u002Ffiles\u002F170176\u002Fsnap-confine-must_mkdir_and_open_with_perms-Race-Condition.html","Packetstormsecurity",[54],"Third Party Advisory",{"url":56,"source":57,"tags":58},"http:\u002F\u002Fseclists.org\u002Ffulldisclosure\u002F2022\u002FDec\u002F4","Seclists",[59,54],"Mailing List",{"url":61,"source":62,"tags":63},"http:\u002F\u002Fwww.openwall.com\u002Flists\u002Foss-security\u002F2022\u002F11\u002F30\u002F2","Openwall",[59,54],{"url":65,"source":66,"tags":67},"https:\u002F\u002Faccess.redhat.com\u002Fsecurity\u002Fcve\u002FCVE-2021-3996","Red Hat",[68,54],"Issue Tracking",{"url":70,"source":66,"tags":71},"https:\u002F\u002Fbugzilla.redhat.com\u002Fshow_bug.cgi?id=2024628",[68,72,54],"Patch",{"url":74,"source":75,"tags":76},"https:\u002F\u002Fgithub.com\u002Futil-linux\u002Futil-linux\u002Fcommit\u002F166e87368ae88bf31112a30e078cceae637f4cdb","GitHub",[72,54],{"url":78,"source":79,"tags":80},"https:\u002F\u002Fmirrors.edge.kernel.org\u002Fpub\u002Flinux\u002Futils\u002Futil-linux\u002Fv2.37\u002Fv2.37.3-ReleaseNotes","Kernel",[81,82],"Release Notes","Vendor Advisory",{"url":84,"source":85,"tags":86},"https:\u002F\u002Fsecurity.gentoo.org\u002Fglsa\u002F202401-08","Gentoo",[],{"url":88,"source":89,"tags":90},"https:\u002F\u002Fsecurity.netapp.com\u002Fadvisory\u002Fntap-20221209-0002\u002F","Netapp",[91,54],"Broken Link",{"url":93,"source":62,"tags":94},"https:\u002F\u002Fwww.openwall.com\u002Flists\u002Foss-security\u002F2022\u002F01\u002F24\u002F2",[95,59,72,54],"Exploit",10,[98],{"id":99,"name":100,"description":101,"extendedDescription":102,"status":103,"abstraction":104,"structure":105},"CWE-552","Files or Directories Accessible to External Parties","The product makes files or directories accessible to unauthorized actors, even though they should not be.","Web servers, FTP servers, and similar servers may store a set of files underneath a \"root\" directory that is accessible to the server's users.  Applications may store sensitive files underneath this root without also using access control to limit which users may request those files, if any.  Alternately, an application might package multiple files or directories into an archive file (e.g., ZIP or tar), but the application might not exclude sensitive files that are underneath those directories.\nIn cloud technologies and containers, this weakness might present itself in the form of misconfigured storage accounts that can be read or written by a public or anonymous user.","Draft","Base","Simple",1,false,[],{"title":110,"metaDescription":111,"keywords":112,"canonicalUrl":113,"structuredData":114},"What is CVE-2021-3996? Vulnerability Analysis | Security Advisory | Precursor Intelligence","Comprehensive analysis of CVE-2021-3996, a medium severity cyber security vulnerability from 2022. A logic error was found in the libmount library of util-li...","CVE-2021-3996, CVE-2021-3996 vulnerability, CVE-2021-3996 security, medium severity vulnerability, cybersecurity, vulnerability analysis, security advisory, CVE database, threat intelligence, security research, vulnerability assessment, cyber threats, 2022, CVSS score, exploit, patch, remediation, kernel security, fedoraproject security, util-linux vulnerability, fedora vulnerability","\u002Fwhat-is\u002Fcve-2021-3996",{"@context":115,"@type":116,"headline":110,"description":111,"datePublished":10,"dateModified":11,"author":117,"publisher":121,"about":125,"mainEntityOfPage":129,"articleSection":132,"keywords":133},"https:\u002F\u002Fschema.org","TechArticle",{"@type":118,"name":119,"url":120},"Organization","Precursor Intelligence","https:\u002F\u002Fprecursorintelligence.com",{"@type":118,"name":119,"url":120,"logo":122},{"@type":123,"url":124},"ImageObject","https:\u002F\u002Fprecursorintelligence.com\u002Fimg\u002Flogos\u002Feplogo.png",{"@type":126,"name":6,"description":127,"additionalType":128},"Thing","Cybersecurity Vulnerability","https:\u002F\u002Fschema.org\u002FSoftwareBug",{"@type":130,"@id":131},"WebPage","https:\u002F\u002Fprecursorintelligence.com\u002Fwhat-is\u002Fcve-2021-3996","Cybersecurity","CVE-2021-3996, CVE-2021-3996 vulnerability, CVE-2021-3996 security, medium severity vulnerability, cybersecurity, vulnerability analysis, security advisory, CVE database, threat intelligence, security research",[135,144],{"Operator":27,"Negate":27,"Nodes":136},[137],{"Operator":138,"Negate":27,"CPEMatch":139},"OR",[140],{"Vulnerable":4,"Criteria":42,"MatchCriteriaID":141,"VersionStartExcluding":27,"VersionStartIncluding":142,"VersionEndExcluding":143,"VersionEndIncluding":27},"755D0AAC-24D9-4B39-BCC2-06AC9FF889E2","2.34","2.37.3",{"Operator":27,"Negate":27,"Nodes":145},[146],{"Operator":138,"Negate":27,"CPEMatch":147},[148],{"Vulnerable":4,"Criteria":47,"MatchCriteriaID":149,"VersionStartExcluding":27,"VersionStartIncluding":27,"VersionEndExcluding":27,"VersionEndIncluding":27},"80E516C0-98A4-4ADE-B69F-66A772E2BAAA",[],[],{"lastModified":11,"cacheTime":153,"version":154},1792348119532,"2.0",{"score":156,"band":36,"action":157,"scoredAt":158},42,"Plan remediation","2026-10-16T06:55:30.078562+00:00"]