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Continued receipt and processing of the BGP update will create a sustained Denial of Service (DoS) condition. This issue affects very specific versions of Juniper Networks Junos OS: 19.3R3-S2; 19.4R3-S3; 20.2 versions 20.2R2-S3 and later, prior to 20.2R3-S2; 20.3 versions 20.3R2 and later, prior to 20.3R3; 20.4 versions 20.4R2 and later, prior to 20.4R3; 21.1 versions prior to 21.1R2. Juniper Networks Junos OS 20.1 is not affected by this issue. This issue also affects Juniper Networks Junos OS Evolved: All versions prior to 20.4R2-S3-EVO, 20.4R3-EVO; 21.1-EVO versions prior to 21.1R2-EVO; 21.2-EVO versions prior to 21.2R2-EVO.","An Improper Handling of Exceptional Conditions vulnerability in Juniper Networks Junos OS and Junos OS Evolved allows an attacker to inject a specific BGP up...","2021-10-19T19:15:08.72","2021-10-25T21:41:46.123",7.5,"CVSS:3.1\u002FAV:N\u002FAC:L\u002FPR:N\u002FUI:N\u002FS:U\u002FC:N\u002FI:N\u002FA:H",{"CVSSMetricV31":15,"CVSSMetricV30":26,"CVSSMetricV2":29,"CVSSMetricV40":26},[16],{"Source":17,"Type":18,"CVSSData":19,"ExploitabilityScore":27,"ImpactScore":28},"sirt@juniper.net","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":18,"CVSSData":32,"BaseSeverity":37,"ExploitabilityScore":38,"ImpactScore":39,"ACInsufInfo":26,"ObtainAllPrivilege":26,"ObtainUserPrivilege":26,"ObtainOtherPrivilege":26,"UserInteractionRequired":26},"nvd@nist.gov",{"Version":33,"VectorString":34,"AccessVector":21,"AccessComplexity":22,"Authentication":23,"ConfidentialityImpact":23,"IntegrityImpact":23,"AvailabilityImpact":35,"BaseScore":36,"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:P","PARTIAL",5,"MEDIUM",10,2.9,0.01167,[40,40,40,40,40,40,40],"High",[44,49,52,55,58,61,64,68,70,72],{"vendor":45,"product":46,"version":47,"criteria":48,"vulnerable":4},"juniper","junos","19.3","cpe:2.3:o:juniper:junos:19.3:r3-s2:*:*:*:*:*:*",{"vendor":45,"product":46,"version":50,"criteria":51,"vulnerable":4},"19.4","cpe:2.3:o:juniper:junos:19.4:r3-s3:*:*:*:*:*:*",{"vendor":45,"product":46,"version":53,"criteria":54,"vulnerable":4},"20.2","cpe:2.3:o:juniper:junos:20.2:r2-s3:*:*:*:*:*:*",{"vendor":45,"product":46,"version":56,"criteria":57,"vulnerable":4},"20.3","cpe:2.3:o:juniper:junos:20.3:r2:*:*:*:*:*:*",{"vendor":45,"product":46,"version":59,"criteria":60,"vulnerable":4},"20.4","cpe:2.3:o:juniper:junos:20.4:r2:*:*:*:*:*:*",{"vendor":45,"product":46,"version":62,"criteria":63,"vulnerable":4},"21.1","cpe:2.3:o:juniper:junos:21.1:r1:*:*:*:*:*:*",{"vendor":45,"product":65,"version":66,"criteria":67,"vulnerable":4},"junos_os_evolved","*","cpe:2.3:o:juniper:junos_os_evolved:*:*:*:*:*:*:*:*",{"vendor":45,"product":65,"version":59,"criteria":69,"vulnerable":4},"cpe:2.3:o:juniper:junos_os_evolved:20.4:r1:*:*:*:*:*:*",{"vendor":45,"product":65,"version":62,"criteria":71,"vulnerable":4},"cpe:2.3:o:juniper:junos_os_evolved:21.1:r1:*:*:*:*:*:*",{"vendor":45,"product":65,"version":73,"criteria":74,"vulnerable":4},"21.2","cpe:2.3:o:juniper:junos_os_evolved:21.2:r1:*:*:*:*:*:*",[76],{"url":77,"source":78,"tags":79},"https:\u002F\u002Fkb.juniper.net\u002FJSA11218","Juniper",[80,81,82],"Exploit","Mitigation","Vendor Advisory",1,[85],{"id":86,"name":87,"description":88,"extendedDescription":89,"status":90,"abstraction":91,"structure":92},"CWE-755","Improper Handling of Exceptional Conditions","The product does not handle or incorrectly handles an exceptional condition.","","Incomplete","Class","Simple",false,[],{"title":96,"metaDescription":97,"keywords":98,"canonicalUrl":99,"structuredData":100},"What is CVE-2021-31353? Vulnerability Analysis | Security Advisory | Precursor Intelligence","Comprehensive analysis of CVE-2021-31353, a high severity cyber security vulnerability from 2021. An Improper Handling of Exceptional Conditions vulnerabilit...","CVE-2021-31353, CVE-2021-31353 vulnerability, CVE-2021-31353 security, high severity vulnerability, cybersecurity, vulnerability analysis, security advisory, CVE database, threat intelligence, security research, vulnerability assessment, cyber threats, 2021, CVSS score, exploit, patch, remediation, juniper security, junos vulnerability, junos_os_evolved vulnerability","\u002Fwhat-is\u002Fcve-2021-31353",{"@context":101,"@type":102,"headline":96,"description":97,"datePublished":10,"dateModified":11,"author":103,"publisher":107,"about":111,"mainEntityOfPage":115,"articleSection":118,"keywords":119},"https:\u002F\u002Fschema.org","TechArticle",{"@type":104,"name":105,"url":106},"Organization","Precursor 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