[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"$fRPiavoychPhReKZ8e44SRuIr6WrKGEwNVa_QxYm8gu4":3,"g5a-risk:CVE-2019-11873":112},{"success":4,"data":5,"meta":110},true,{"cveId":6,"title":7,"description":8,"shortDescription":9,"publishedDate":10,"lastModified":11,"cvssScore":12,"cvssVector":13,"cvssMetrics":14,"epssScore":39,"epssPercentile":27,"epssTimeSeries":40,"severity":41,"affectedProducts":42,"affectedProductsCount":47,"references":48,"referencesCount":63,"weaknesses":64,"weaknessesCount":47,"isActivelyExploited":73,"cisaInfo":27,"otxData":27,"relatedBlogPosts":74,"seoMetadata":75,"configurations":100,"relatedVendorCves":108,"notableEvents":109},"CVE-2019-11873","What is CVE-2019-11873?","wolfSSL 4.0.0 has a Buffer Overflow in DoPreSharedKeys in tls13.c when a current identity size is greater than a client identity size. An attacker sends a crafted hello client packet over the network to a TLSv1.3 wolfSSL server. The length fields of the packet: record length, client hello length, total extensions length, PSK extension length, total identity length, and identity length contain their maximum value which is 2^16. The identity data field of the PSK extension of the packet contains the attack data, to be stored in the undefined memory (RAM) of the server. The size of the data is about 65 kB. Possibly the attacker can perform a remote code execution attack.","wolfSSL 4.0.0 has a Buffer Overflow in DoPreSharedKeys in tls13.c when a current identity size is greater than a client identity size. An attacker sends a cr...","2019-05-23T13:29:07.567","2022-04-22T20:11:03.943",9.8,"CVSS:3.1\u002FAV:N\u002FAC:L\u002FPR:N\u002FUI:N\u002FS:U\u002FC:H\u002FI:H\u002FA:H",{"CVSSMetricV31":15,"CVSSMetricV30":27,"CVSSMetricV2":30,"CVSSMetricV40":27},[16],{"Source":17,"Type":18,"CVSSData":19,"ExploitabilityScore":28,"ImpactScore":29},"nvd@nist.gov","Primary",{"Version":20,"VectorString":13,"AttackVector":21,"AttackComplexity":22,"PrivilegesRequired":23,"UserInteraction":23,"Scope":24,"ConfidentialityImpact":25,"IntegrityImpact":25,"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","NETWORK","LOW","NONE","UNCHANGED","HIGH","CRITICAL",null,3.9,5.9,[31],{"Source":17,"Type":18,"CVSSData":32,"BaseSeverity":25,"ExploitabilityScore":37,"ImpactScore":38,"ACInsufInfo":27,"ObtainAllPrivilege":27,"ObtainUserPrivilege":27,"ObtainOtherPrivilege":27,"UserInteractionRequired":27},{"Version":33,"VectorString":34,"AccessVector":21,"AccessComplexity":22,"Authentication":23,"ConfidentialityImpact":35,"IntegrityImpact":35,"AvailabilityImpact":35,"BaseScore":36,"BaseSeverity":27,"Exploitability":27,"RemediationLevel":27,"ReportConfidence":27,"TemporalScore":27,"CollateralDamagePotential":27,"TargetDistribution":27,"ConfidentialityRequirement":27,"IntegrityRequirement":27,"AvailabilityRequirement":27,"EnvironmentalScore":27},"2.0","AV:N\u002FAC:L\u002FAu:N\u002FC:P\u002FI:P\u002FA:P","PARTIAL",7.5,10,6.4,0.09249,[39,39,39,39,39,39,39],"Critical",[43],{"vendor":44,"product":44,"version":45,"criteria":46,"vulnerable":4},"wolfssl","4.0","cpe:2.3:a:wolfssl:wolfssl:4.0:-:*:*:*:*:*:*",1,[49,54,59],{"url":50,"source":51,"tags":52},"http:\u002F\u002Fwww.securityfocus.com\u002Fbid\u002F108466","Securityfocus",[53],"Broken Link",{"url":55,"source":56,"tags":57},"https:\u002F\u002Fwww.telekom.com\u002Fen\u002Fcorporate-responsibility\u002Fdata-protection-data-security\u002Fsecurity\u002Fdetails\u002Fadvisories-504842","Telekom",[58],"Third Party Advisory",{"url":60,"source":56,"tags":61},"https:\u002F\u002Fwww.telekom.com\u002Fresource\u002Fblob\u002F572524\u002F1c89c1cbaccdf792153063b3a10af10e\u002Fdl-190515-remote-buffer-overflow-vulnerability-wolfssl-library-data.pdf",[62,58],"Patch",3,[65],{"id":66,"name":67,"description":68,"extendedDescription":69,"status":70,"abstraction":71,"structure":72},"CWE-787","Out-of-bounds Write","The product writes data past the end, or before the beginning, of the intended buffer.","","Draft","Base","Simple",false,[],{"title":76,"metaDescription":77,"keywords":78,"canonicalUrl":79,"structuredData":80},"What is CVE-2019-11873? Vulnerability Analysis | Security Advisory | Precursor Intelligence","Comprehensive analysis of CVE-2019-11873, a critical severity cyber security vulnerability from 2019. wolfSSL 4.0.0 has a Buffer Overflow in DoPreSharedKeys ...","CVE-2019-11873, CVE-2019-11873 vulnerability, CVE-2019-11873 security, critical severity vulnerability, cybersecurity, vulnerability analysis, security advisory, CVE database, threat intelligence, security research, vulnerability assessment, cyber threats, 2019, CVSS score, exploit, patch, remediation, wolfssl security, wolfssl vulnerability","\u002Fwhat-is\u002Fcve-2019-11873",{"@context":81,"@type":82,"headline":76,"description":77,"datePublished":10,"dateModified":11,"author":83,"publisher":87,"about":91,"mainEntityOfPage":95,"articleSection":98,"keywords":99},"https:\u002F\u002Fschema.org","TechArticle",{"@type":84,"name":85,"url":86},"Organization","Precursor Intelligence","https:\u002F\u002Fprecursorintelligence.com",{"@type":84,"name":85,"url":86,"logo":88},{"@type":89,"url":90},"ImageObject","https:\u002F\u002Fprecursorintelligence.com\u002Fimg\u002Flogos\u002Feplogo.png",{"@type":92,"name":6,"description":93,"additionalType":94},"Thing","Cybersecurity Vulnerability","https:\u002F\u002Fschema.org\u002FSoftwareBug",{"@type":96,"@id":97},"WebPage","https:\u002F\u002Fprecursorintelligence.com\u002Fwhat-is\u002Fcve-2019-11873","Cybersecurity","CVE-2019-11873, CVE-2019-11873 vulnerability, CVE-2019-11873 security, critical severity vulnerability, cybersecurity, vulnerability analysis, security advisory, CVE database, threat intelligence, security research",[101],{"Operator":27,"Negate":27,"Nodes":102},[103],{"Operator":104,"Negate":27,"CPEMatch":105},"OR",[106],{"Vulnerable":4,"Criteria":46,"MatchCriteriaID":107,"VersionStartExcluding":27,"VersionStartIncluding":27,"VersionEndExcluding":27,"VersionEndIncluding":27},"E0FEE318-BAD5-4CE8-AE48-A4E7D28281B8",[],[],{"lastModified":11,"cacheTime":111,"version":33},1792347418916,{"score":113,"band":114,"action":115,"scoredAt":116},55,"Medium","Plan remediation","2026-10-16T06:46:11.94117+00:00"]