[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"$ftuylJO2HZHjezd1BhVStQ3axyq7if5XcZ0kiZX2HIb0":3,"g5a-risk:CVE-2018-16843":238},{"success":4,"data":5,"meta":236},true,{"cveId":6,"title":7,"description":8,"shortDescription":9,"publishedDate":10,"lastModified":11,"cvssScore":12,"cvssVector":13,"cvssMetrics":14,"epssScore":48,"epssPercentile":26,"epssTimeSeries":49,"severity":50,"affectedProducts":51,"affectedProductsCount":85,"references":86,"referencesCount":137,"weaknesses":138,"weaknessesCount":147,"isActivelyExploited":148,"cisaInfo":26,"otxData":26,"relatedBlogPosts":149,"seoMetadata":150,"configurations":175,"relatedVendorCves":220,"notableEvents":221},"CVE-2018-16843","What is CVE-2018-16843?","nginx before versions 1.15.6 and 1.14.1 has a vulnerability in the implementation of HTTP\u002F2 that can allow for excessive memory consumption. This issue affects nginx compiled with the ngx_http_v2_module (not compiled by default) if the 'http2' option of the 'listen' directive is used in a configuration file.","nginx before versions 1.15.6 and 1.14.1 has a vulnerability in the implementation of HTTP\u002F2 that can allow for excessive memory consumption. This issue affec...","2018-11-07T14:29:00.777","2022-02-22T19:27:12.35",7.5,"CVSS:3.1\u002FAV:N\u002FAC:L\u002FPR:N\u002FUI:N\u002FS:U\u002FC:N\u002FI:N\u002FA:H",{"CVSSMetricV31":15,"CVSSMetricV30":29,"CVSSMetricV2":39,"CVSSMetricV40":26},[16],{"Source":17,"Type":18,"CVSSData":19,"ExploitabilityScore":27,"ImpactScore":28},"nvd@nist.gov","Primary",{"Version":20,"VectorString":13,"AttackVector":21,"AttackComplexity":22,"PrivilegesRequired":23,"UserInteraction":23,"Scope":24,"ConfidentialityImpact":23,"IntegrityImpact":23,"AvailabilityImpact":25,"BaseScore":12,"BaseSeverity":25,"ExploitCodeMaturity":26,"RemediationLevel":26,"ReportConfidence":26,"TemporalScore":26,"TemporalSeverity":26,"ConfidentialityRequirement":26,"IntegrityRequirement":26,"AvailabilityRequirement":25,"ModifiedAttackVector":26,"ModifiedAttackComplexity":26,"ModifiedPrivilegesRequired":26,"ModifiedUserInteraction":26,"ModifiedScope":26,"ModifiedConfidentialityImpact":26,"ModifiedIntegrityImpact":26,"ModifiedAvailabilityImpact":26,"EnvironmentalScore":26,"EnvironmentalSeverity":26},"3.1","NETWORK","LOW","NONE","UNCHANGED","HIGH",null,3.9,3.6,[30],{"Source":31,"Type":32,"CVSSData":33,"ExploitabilityScore":27,"ImpactScore":38},"secalert@redhat.com","Secondary",{"Version":34,"VectorString":35,"AttackVector":21,"AttackComplexity":22,"PrivilegesRequired":23,"UserInteraction":23,"Scope":24,"ConfidentialityImpact":23,"IntegrityImpact":23,"AvailabilityImpact":22,"BaseScore":36,"BaseSeverity":37,"ExploitCodeMaturity":26,"RemediationLevel":26,"ReportConfidence":26,"TemporalScore":26,"TemporalSeverity":26,"ConfidentialityRequirement":26,"IntegrityRequirement":26,"AvailabilityRequirement":26,"ModifiedAttackVector":26,"ModifiedAttackComplexity":26,"ModifiedPrivilegesRequired":26,"ModifiedUserInteraction":26,"ModifiedScope":26,"ModifiedConfidentialityImpact":26,"ModifiedIntegrityImpact":26,"ModifiedAvailabilityImpact":26,"EnvironmentalScore":26,"EnvironmentalSeverity":26},"3.0","CVSS:3.0\u002FAV:N\u002FAC:L\u002FPR:N\u002FUI:N\u002FS:U\u002FC:N\u002FI:N\u002FA:L",5.3,"MEDIUM",1.4,[40],{"Source":17,"Type":18,"CVSSData":41,"BaseSeverity":25,"ExploitabilityScore":46,"ImpactScore":47,"ACInsufInfo":26,"ObtainAllPrivilege":26,"ObtainUserPrivilege":26,"ObtainOtherPrivilege":26,"UserInteractionRequired":26},{"Version":42,"VectorString":43,"AccessVector":21,"AccessComplexity":22,"Authentication":23,"ConfidentialityImpact":23,"IntegrityImpact":23,"AvailabilityImpact":44,"BaseScore":45,"BaseSeverity":26,"Exploitability":26,"RemediationLevel":26,"ReportConfidence":26,"TemporalScore":26,"CollateralDamagePotential":26,"TargetDistribution":26,"ConfidentialityRequirement":26,"IntegrityRequirement":26,"AvailabilityRequirement":26,"EnvironmentalScore":26},"2.0","AV:N\u002FAC:L\u002FAu:N\u002FC:N\u002FI:N\u002FA:C","COMPLETE",7.8,10,6.9,0.47985,[48,48,48,48,48,48,48],"High",[52,57,62,67,70,73,76,81],{"vendor":53,"product":54,"version":55,"criteria":56,"vulnerable":4},"f5","nginx","*","cpe:2.3:a:f5:nginx:*:*:*:*:*:*:*:*",{"vendor":58,"product":59,"version":60,"criteria":61,"vulnerable":4},"debian","debian_linux","9.0","cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*",{"vendor":63,"product":64,"version":65,"criteria":66,"vulnerable":4},"canonical","ubuntu_linux","14.04","cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:esm:*:*:*",{"vendor":63,"product":64,"version":68,"criteria":69,"vulnerable":4},"16.04","cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:lts:*:*:*",{"vendor":63,"product":64,"version":71,"criteria":72,"vulnerable":4},"18.04","cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:*",{"vendor":63,"product":64,"version":74,"criteria":75,"vulnerable":4},"18.10","cpe:2.3:o:canonical:ubuntu_linux:18.10:*:*:*:*:*:*:*",{"vendor":77,"product":78,"version":79,"criteria":80,"vulnerable":4},"opensuse","leap","15.1","cpe:2.3:o:opensuse:leap:15.1:*:*:*:*:*:*:*",{"vendor":82,"product":83,"version":55,"criteria":84,"vulnerable":4},"apple","xcode","cpe:2.3:a:apple:xcode:*:*:*:*:*:*:*:*",8,[87,93,98,102,107,111,115,118,121,125,129,133],{"url":88,"source":89,"tags":90},"http:\u002F\u002Flists.opensuse.org\u002Fopensuse-security-announce\u002F2019-09\u002Fmsg00035.html","Opensuse",[91,92],"Mailing List","Third Party Advisory",{"url":94,"source":95,"tags":96},"http:\u002F\u002Fmailman.nginx.org\u002Fpipermail\u002Fnginx-announce\u002F2018\u002F000220.html","Nginx",[91,97],"Vendor Advisory",{"url":99,"source":100,"tags":101},"http:\u002F\u002Fseclists.org\u002Ffulldisclosure\u002F2021\u002FSep\u002F36","Seclists",[91,92],{"url":103,"source":104,"tags":105},"http:\u002F\u002Fwww.securityfocus.com\u002Fbid\u002F105868","Securityfocus",[92,106],"VDB Entry",{"url":108,"source":109,"tags":110},"http:\u002F\u002Fwww.securitytracker.com\u002Fid\u002F1042038","Securitytracker",[92,106],{"url":112,"source":113,"tags":114},"https:\u002F\u002Faccess.redhat.com\u002Ferrata\u002FRHSA-2018:3653","Red Hat",[92],{"url":116,"source":113,"tags":117},"https:\u002F\u002Faccess.redhat.com\u002Ferrata\u002FRHSA-2018:3680",[92],{"url":119,"source":113,"tags":120},"https:\u002F\u002Faccess.redhat.com\u002Ferrata\u002FRHSA-2018:3681",[92],{"url":122,"source":113,"tags":123},"https:\u002F\u002Fbugzilla.redhat.com\u002Fshow_bug.cgi?id=CVE-2018-16843",[124,92],"Issue Tracking",{"url":126,"source":127,"tags":128},"https:\u002F\u002Fsupport.apple.com\u002Fkb\u002FHT212818","Apple",[92],{"url":130,"source":131,"tags":132},"https:\u002F\u002Fusn.ubuntu.com\u002F3812-1\u002F","Ubuntu",[92],{"url":134,"source":135,"tags":136},"https:\u002F\u002Fwww.debian.org\u002Fsecurity\u002F2018\u002Fdsa-4335","Debian",[92],12,[139],{"id":140,"name":141,"description":142,"extendedDescription":143,"status":144,"abstraction":145,"structure":146},"CWE-400","Uncontrolled Resource Consumption","The product does not properly control the allocation and maintenance of a limited resource, thereby enabling an actor to influence the amount of resources consumed, eventually leading to the exhaustion of available resources.","Limited resources include memory, file system storage, database connection pool entries, and CPU. If an attacker can trigger the allocation of these limited resources, but the number or size of the resources is not controlled, then the attacker could cause a denial of service that consumes all available resources. This would prevent valid users from accessing the product, and it could potentially have an impact on the surrounding environment. For example, a memory exhaustion attack against an application could slow down the application as well as its host operating system.\nThere are at least three distinct scenarios which can commonly lead to resource exhaustion:\nResource exhaustion problems are often result due to an incorrect implementation of the following situations:","Draft","Class","Simple",1,false,[],{"title":151,"metaDescription":152,"keywords":153,"canonicalUrl":154,"structuredData":155},"What is CVE-2018-16843? Vulnerability Analysis | Security Advisory | Precursor Intelligence","Comprehensive analysis of CVE-2018-16843, a high severity cyber security vulnerability from 2018. High exploit probability (48.0%). nginx before versions 1.1...","CVE-2018-16843, CVE-2018-16843 vulnerability, CVE-2018-16843 security, high severity vulnerability, cybersecurity, vulnerability analysis, security advisory, CVE database, threat intelligence, security research, vulnerability assessment, cyber threats, 2018, CVSS score, exploit, patch, remediation, f5 security, debian security, canonical security, opensuse security, apple security, nginx vulnerability, debian_linux vulnerability, ubuntu_linux vulnerability","\u002Fwhat-is\u002Fcve-2018-16843",{"@context":156,"@type":157,"headline":151,"description":152,"datePublished":10,"dateModified":11,"author":158,"publisher":162,"about":166,"mainEntityOfPage":170,"articleSection":173,"keywords":174},"https:\u002F\u002Fschema.org","TechArticle",{"@type":159,"name":160,"url":161},"Organization","Precursor Intelligence","https:\u002F\u002Fprecursorintelligence.com",{"@type":159,"name":160,"url":161,"logo":163},{"@type":164,"url":165},"ImageObject","https:\u002F\u002Fprecursorintelligence.com\u002Fimg\u002Flogos\u002Feplogo.png",{"@type":167,"name":6,"description":168,"additionalType":169},"Thing","Cybersecurity Vulnerability","https:\u002F\u002Fschema.org\u002FSoftwareBug",{"@type":171,"@id":172},"WebPage","https:\u002F\u002Fprecursorintelligence.com\u002Fwhat-is\u002Fcve-2018-16843","Cybersecurity","CVE-2018-16843, CVE-2018-16843 vulnerability, CVE-2018-16843 security, high severity vulnerability, cybersecurity, vulnerability analysis, security advisory, CVE database, threat intelligence, security research",[176,189,195,207,213],{"Operator":26,"Negate":26,"Nodes":177},[178],{"Operator":179,"Negate":26,"CPEMatch":180},"OR",[181,185],{"Vulnerable":4,"Criteria":56,"MatchCriteriaID":182,"VersionStartExcluding":183,"VersionStartIncluding":26,"VersionEndExcluding":184,"VersionEndIncluding":26},"C78F746A-3EE5-4CFC-83EC-7B3F6AE89B50","1.9.5","1.14.1",{"Vulnerable":4,"Criteria":56,"MatchCriteriaID":186,"VersionStartExcluding":187,"VersionStartIncluding":26,"VersionEndExcluding":188,"VersionEndIncluding":26},"54615C73-4052-4ED4-9BBD-1A34E9DC0E78","1.15.0","1.15.6",{"Operator":26,"Negate":26,"Nodes":190},[191],{"Operator":179,"Negate":26,"CPEMatch":192},[193],{"Vulnerable":4,"Criteria":61,"MatchCriteriaID":194,"VersionStartExcluding":26,"VersionStartIncluding":26,"VersionEndExcluding":26,"VersionEndIncluding":26},"DEECE5FC-CACF-4496-A3E7-164736409252",{"Operator":26,"Negate":26,"Nodes":196},[197],{"Operator":179,"Negate":26,"CPEMatch":198},[199,201,203,205],{"Vulnerable":4,"Criteria":66,"MatchCriteriaID":200,"VersionStartExcluding":26,"VersionStartIncluding":26,"VersionEndExcluding":26,"VersionEndIncluding":26},"815D70A8-47D3-459C-A32C-9FEACA0659D1",{"Vulnerable":4,"Criteria":69,"MatchCriteriaID":202,"VersionStartExcluding":26,"VersionStartIncluding":26,"VersionEndExcluding":26,"VersionEndIncluding":26},"F7016A2A-8365-4F1A-89A2-7A19F2BCAE5B",{"Vulnerable":4,"Criteria":72,"MatchCriteriaID":204,"VersionStartExcluding":26,"VersionStartIncluding":26,"VersionEndExcluding":26,"VersionEndIncluding":26},"23A7C53F-B80F-4E6A-AFA9-58EEA84BE11D",{"Vulnerable":4,"Criteria":75,"MatchCriteriaID":206,"VersionStartExcluding":26,"VersionStartIncluding":26,"VersionEndExcluding":26,"VersionEndIncluding":26},"07C312A0-CD2C-4B9C-B064-6409B25C278F",{"Operator":26,"Negate":26,"Nodes":208},[209],{"Operator":179,"Negate":26,"CPEMatch":210},[211],{"Vulnerable":4,"Criteria":80,"MatchCriteriaID":212,"VersionStartExcluding":26,"VersionStartIncluding":26,"VersionEndExcluding":26,"VersionEndIncluding":26},"B620311B-34A3-48A6-82DF-6F078D7A4493",{"Operator":26,"Negate":26,"Nodes":214},[215],{"Operator":179,"Negate":26,"CPEMatch":216},[217],{"Vulnerable":4,"Criteria":84,"MatchCriteriaID":218,"VersionStartExcluding":26,"VersionStartIncluding":26,"VersionEndExcluding":219,"VersionEndIncluding":26},"BB279F6B-EE4C-4885-9CD4-657F6BD2548F","13.0",[],[222,229],{"id":223,"eventType":224,"eventTime":225,"details":226,"label":227,"color":228},"e97b3f11-6c43-4af7-8742-1b4dae49ef73","HIGH_EPSS_DELTA","2025-06-11T10:11:15.472188+00:00","Daily EPSS score increased by 0.145 on 2023-12-30","EPSS Score Increased","red",{"id":230,"eventType":231,"eventTime":232,"details":233,"label":234,"color":235},"ec9486b3-3148-4948-9eb3-5f58195d95b0","LOW_EPSS_DELTA","2025-09-02T04:06:45.258203+00:00","Daily EPSS score decreased by 0.147 on 2023-12-30","EPSS Score Decreased","green",{"lastModified":11,"cacheTime":237,"version":42},1792256953381,{"score":239,"band":240,"action":241,"scoredAt":242},47,"Medium","Plan remediation","2026-10-16T06:45:08.126045+00:00"]