[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"$fj-lWQ6rbUUJ9PP6P4yEGF6wnsYiglJVTQSHIsU_9c9o":3,"g5a-risk:CVE-2021-3618":169},{"success":4,"data":5,"meta":167},true,{"cveId":6,"title":7,"description":8,"shortDescription":9,"publishedDate":10,"lastModified":11,"cvssScore":12,"cvssVector":13,"cvssMetrics":14,"epssScore":38,"epssPercentile":25,"epssTimeSeries":39,"severity":40,"affectedProducts":41,"affectedProductsCount":70,"references":71,"referencesCount":88,"weaknesses":89,"weaknessesCount":98,"isActivelyExploited":99,"cisaInfo":25,"otxData":25,"relatedBlogPosts":100,"seoMetadata":101,"configurations":126,"relatedVendorCves":165,"notableEvents":166},"CVE-2021-3618","What is CVE-2021-3618?","ALPACA is an application layer protocol content confusion attack, exploiting TLS servers implementing different protocols but using compatible certificates, such as multi-domain or wildcard certificates. A MiTM attacker having access to victim's traffic at the TCP\u002FIP layer can redirect traffic from one subdomain to another, resulting in a valid TLS session. This breaks the authentication of TLS and cross-protocol attacks may be possible where the behavior of one protocol service may compromise the other at the application layer.","ALPACA is an application layer protocol content confusion attack, exploiting TLS servers implementing different protocols but using compatible certificates, ...","2022-03-23T20:15:09.833","2023-02-09T02:03:34.457",7.4,"CVSS:3.1\u002FAV:N\u002FAC:H\u002FPR:N\u002FUI:N\u002FS:U\u002FC:H\u002FI:H\u002FA:N",{"CVSSMetricV31":15,"CVSSMetricV30":25,"CVSSMetricV2":28,"CVSSMetricV40":25},[16],{"Source":17,"Type":18,"CVSSData":19,"ExploitabilityScore":26,"ImpactScore":27},"nvd@nist.gov","Primary",{"Version":20,"VectorString":13,"AttackVector":21,"AttackComplexity":22,"PrivilegesRequired":23,"UserInteraction":23,"Scope":24,"ConfidentialityImpact":22,"IntegrityImpact":22,"AvailabilityImpact":23,"BaseScore":12,"BaseSeverity":22,"ExploitCodeMaturity":25,"RemediationLevel":25,"ReportConfidence":25,"TemporalScore":25,"TemporalSeverity":25,"ConfidentialityRequirement":25,"IntegrityRequirement":25,"AvailabilityRequirement":23,"ModifiedAttackVector":25,"ModifiedAttackComplexity":25,"ModifiedPrivilegesRequired":25,"ModifiedUserInteraction":25,"ModifiedScope":25,"ModifiedConfidentialityImpact":25,"ModifiedIntegrityImpact":25,"ModifiedAvailabilityImpact":25,"EnvironmentalScore":25,"EnvironmentalSeverity":25},"3.1","NETWORK","HIGH","NONE","UNCHANGED",null,2.2,5.2,[29],{"Source":17,"Type":18,"CVSSData":30,"BaseSeverity":33,"ExploitabilityScore":36,"ImpactScore":37,"ACInsufInfo":25,"ObtainAllPrivilege":25,"ObtainUserPrivilege":25,"ObtainOtherPrivilege":25,"UserInteractionRequired":25},{"Version":31,"VectorString":32,"AccessVector":21,"AccessComplexity":33,"Authentication":23,"ConfidentialityImpact":34,"IntegrityImpact":34,"AvailabilityImpact":23,"BaseScore":35,"BaseSeverity":25,"Exploitability":25,"RemediationLevel":25,"ReportConfidence":25,"TemporalScore":25,"CollateralDamagePotential":25,"TargetDistribution":25,"ConfidentialityRequirement":25,"IntegrityRequirement":25,"AvailabilityRequirement":25,"EnvironmentalScore":25},"2.0","AV:N\u002FAC:M\u002FAu:N\u002FC:P\u002FI:P\u002FA:N","MEDIUM","PARTIAL",5.8,8.6,4.9,0.02027,[38,38,38,38,38,38,38],"High",[42,47,50,54,59,62,65],{"vendor":43,"product":44,"version":45,"criteria":46,"vulnerable":4},"f5","nginx","*","cpe:2.3:a:f5:nginx:*:*:*:*:*:*:*:*",{"vendor":48,"product":48,"version":45,"criteria":49,"vulnerable":4},"sendmail","cpe:2.3:a:sendmail:sendmail:*:*:*:*:*:*:*:*",{"vendor":51,"product":52,"version":45,"criteria":53,"vulnerable":4},"vsftpd_project","vsftpd","cpe:2.3:a:vsftpd_project:vsftpd:*:*:*:*:*:*:*:*",{"vendor":55,"product":56,"version":57,"criteria":58,"vulnerable":4},"fedoraproject","fedora","33","cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:*",{"vendor":55,"product":56,"version":60,"criteria":61,"vulnerable":4},"34","cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:*",{"vendor":55,"product":56,"version":63,"criteria":64,"vulnerable":4},"35","cpe:2.3:o:fedoraproject:fedora:35:*:*:*:*:*:*:*",{"vendor":66,"product":67,"version":68,"criteria":69,"vulnerable":4},"debian","debian_linux","10.0","cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*",7,[72,77,83],{"url":73,"source":74,"tags":75},"https:\u002F\u002Falpaca-attack.com\u002F","Alpaca-attack",[76],"Third Party Advisory",{"url":78,"source":79,"tags":80},"https:\u002F\u002Fbugzilla.redhat.com\u002Fshow_bug.cgi?id=1975623","Red Hat",[81,82,76],"Issue Tracking","Patch",{"url":84,"source":85,"tags":86},"https:\u002F\u002Flists.debian.org\u002Fdebian-lts-announce\u002F2022\u002F11\u002Fmsg00031.html","Debian",[87,76],"Mailing List",3,[90],{"id":91,"name":92,"description":93,"extendedDescription":94,"status":95,"abstraction":96,"structure":97},"CWE-295","Improper Certificate Validation","The product does not validate, or incorrectly validates, a certificate.","When a certificate is invalid or malicious, it might allow an attacker to spoof a trusted entity by interfering in the communication path between the host and client. The product might connect to a malicious host while believing it is a trusted host, or the product might be deceived into accepting spoofed data that appears to originate from a trusted host.","Draft","Base","Simple",1,false,[],{"title":102,"metaDescription":103,"keywords":104,"canonicalUrl":105,"structuredData":106},"What is CVE-2021-3618? Vulnerability Analysis | Security Advisory | EdgeProtect","Comprehensive analysis of CVE-2021-3618, a high severity cyber security vulnerability from 2022. 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