[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"$fcyaSzqsD4whvyuZCm2NVrgu01zanYqY4m7dDAiHdSdM":3,"g5a-risk:CVE-2021-37706":251},{"success":4,"data":5,"meta":249},true,{"cveId":6,"title":7,"description":8,"shortDescription":9,"publishedDate":10,"lastModified":11,"cvssScore":12,"cvssVector":13,"cvssMetrics":14,"epssScore":50,"epssPercentile":28,"epssTimeSeries":51,"severity":53,"affectedProducts":54,"affectedProductsCount":78,"references":79,"referencesCount":137,"weaknesses":138,"weaknessesCount":147,"isActivelyExploited":49,"cisaInfo":28,"otxData":28,"relatedBlogPosts":148,"seoMetadata":149,"configurations":174,"relatedVendorCves":247,"notableEvents":248},"CVE-2021-37706","What is CVE-2021-37706?","PJSIP is a free and open source multimedia communication library written in C language implementing standard based protocols such as SIP, SDP, RTP, STUN, TURN, and ICE. In affected versions if the incoming STUN message contains an ERROR-CODE attribute, the header length is not checked before performing a subtraction operation, potentially resulting in an integer underflow scenario. This issue affects all users that use STUN. A malicious actor located within the victim’s network may forge and send a specially crafted UDP (STUN) message that could remotely execute arbitrary code on the victim’s machine. Users are advised to upgrade as soon as possible. There are no known workarounds.","PJSIP is a free and open source multimedia communication library written in C language implementing standard based protocols such as SIP, SDP, RTP, STUN, TUR...","2021-12-22T18:15:07.487","2025-11-04T16:15:43.01",9.8,"CVSS:3.1\u002FAV:N\u002FAC:L\u002FPR:N\u002FUI:N\u002FS:U\u002FC:H\u002FI:H\u002FA:H",{"CVSSMetricV31":15,"CVSSMetricV30":37,"CVSSMetricV2":38,"CVSSMetricV40":28},[16,31],{"Source":17,"Type":18,"CVSSData":19,"ExploitabilityScore":29,"ImpactScore":30},"security-advisories@github.com","Secondary",{"Version":20,"VectorString":21,"AttackVector":22,"AttackComplexity":23,"PrivilegesRequired":24,"UserInteraction":24,"Scope":25,"ConfidentialityImpact":23,"IntegrityImpact":23,"AvailabilityImpact":23,"BaseScore":26,"BaseSeverity":27,"ExploitCodeMaturity":28,"RemediationLevel":28,"ReportConfidence":28,"TemporalScore":28,"TemporalSeverity":28,"ConfidentialityRequirement":28,"IntegrityRequirement":28,"AvailabilityRequirement":28,"ModifiedAttackVector":28,"ModifiedAttackComplexity":28,"ModifiedPrivilegesRequired":28,"ModifiedUserInteraction":28,"ModifiedScope":28,"ModifiedConfidentialityImpact":28,"ModifiedIntegrityImpact":28,"ModifiedAvailabilityImpact":28,"EnvironmentalScore":28,"EnvironmentalSeverity":28},"3.1","CVSS:3.1\u002FAV:N\u002FAC:L\u002FPR:N\u002FUI:N\u002FS:U\u002FC:L\u002FI:L\u002FA:L","NETWORK","LOW","NONE","UNCHANGED",7.3,"HIGH",null,3.9,3.4,{"Source":32,"Type":33,"CVSSData":34,"ExploitabilityScore":29,"ImpactScore":36},"nvd@nist.gov","Primary",{"Version":20,"VectorString":13,"AttackVector":22,"AttackComplexity":23,"PrivilegesRequired":24,"UserInteraction":24,"Scope":25,"ConfidentialityImpact":27,"IntegrityImpact":27,"AvailabilityImpact":27,"BaseScore":12,"BaseSeverity":35,"ExploitCodeMaturity":28,"RemediationLevel":28,"ReportConfidence":28,"TemporalScore":28,"TemporalSeverity":28,"ConfidentialityRequirement":28,"IntegrityRequirement":28,"AvailabilityRequirement":28,"ModifiedAttackVector":28,"ModifiedAttackComplexity":28,"ModifiedPrivilegesRequired":28,"ModifiedUserInteraction":28,"ModifiedScope":28,"ModifiedConfidentialityImpact":28,"ModifiedIntegrityImpact":28,"ModifiedAvailabilityImpact":28,"EnvironmentalScore":28,"EnvironmentalSeverity":28},"CRITICAL",5.9,[],[39],{"Source":32,"Type":33,"CVSSData":40,"BaseSeverity":27,"ExploitabilityScore":47,"ImpactScore":48,"ACInsufInfo":49,"ObtainAllPrivilege":49,"ObtainUserPrivilege":49,"ObtainOtherPrivilege":49,"UserInteractionRequired":49},{"Version":41,"VectorString":42,"AccessVector":22,"AccessComplexity":43,"Authentication":24,"ConfidentialityImpact":44,"IntegrityImpact":44,"AvailabilityImpact":44,"BaseScore":45,"BaseSeverity":46,"Exploitability":28,"RemediationLevel":28,"ReportConfidence":28,"TemporalScore":28,"CollateralDamagePotential":28,"TargetDistribution":28,"ConfidentialityRequirement":28,"IntegrityRequirement":28,"AvailabilityRequirement":28,"EnvironmentalScore":28},"2.0","AV:N\u002FAC:M\u002FAu:N\u002FC:C\u002FI:C\u002FA:C","MEDIUM","COMPLETE",9.3,"",8.6,10,false,0.04924,[52,52,52,50,50,50,50],0.04583,"Critical",[55,60,64,67,70,75],{"vendor":56,"product":57,"version":58,"criteria":59,"vulnerable":4},"teluu","pjsip","*","cpe:2.3:a:teluu:pjsip:*:*:*:*:*:*:*:*",{"vendor":61,"product":62,"version":58,"criteria":63,"vulnerable":4},"asterisk","certified_asterisk","cpe:2.3:a:asterisk:certified_asterisk:*:*:*:*:*:*:*:*",{"vendor":61,"product":62,"version":65,"criteria":66,"vulnerable":4},"16.8.0","cpe:2.3:a:asterisk:certified_asterisk:16.8.0:*:*:*:*:*:*:*",{"vendor":68,"product":61,"version":58,"criteria":69,"vulnerable":4},"sangoma","cpe:2.3:a:sangoma:asterisk:*:*:*:*:*:*:*:*",{"vendor":71,"product":72,"version":73,"criteria":74,"vulnerable":4},"debian","debian_linux","9.0","cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*",{"vendor":71,"product":72,"version":76,"criteria":77,"vulnerable":4},"10.0","cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*",6,[80,86,92,96,99,103,106,109,113,116,118,120,122,124,126,128,130,133,135],{"url":81,"source":82,"tags":83},"http:\u002F\u002Fpacketstormsecurity.com\u002Ffiles\u002F166225\u002FAsterisk-Project-Security-Advisory-AST-2022-004.html","Packetstormsecurity",[84,85],"Third Party Advisory","VDB Entry",{"url":87,"source":88,"tags":89},"http:\u002F\u002Fseclists.org\u002Ffulldisclosure\u002F2022\u002FMar\u002F0","Seclists",[90,91,84],"Mailing List","Patch",{"url":93,"source":94,"tags":95},"https:\u002F\u002Fgithub.com\u002Fpjsip\u002Fpjproject\u002Fcommit\u002F15663e3f37091069b8c98a7fce680dc04bc8e865","GitHub",[91,84],{"url":97,"source":94,"tags":98},"https:\u002F\u002Fgithub.com\u002Fpjsip\u002Fpjproject\u002Fsecurity\u002Fadvisories\u002FGHSA-2qpg-f6wf-w984",[91,84],{"url":100,"source":101,"tags":102},"https:\u002F\u002Flists.debian.org\u002Fdebian-lts-announce\u002F2022\u002F03\u002Fmsg00035.html","Debian",[90,84],{"url":104,"source":101,"tags":105},"https:\u002F\u002Flists.debian.org\u002Fdebian-lts-announce\u002F2022\u002F11\u002Fmsg00021.html",[90,84],{"url":107,"source":101,"tags":108},"https:\u002F\u002Flists.debian.org\u002Fdebian-lts-announce\u002F2023\u002F08\u002Fmsg00038.html",[],{"url":110,"source":111,"tags":112},"https:\u002F\u002Fsecurity.gentoo.org\u002Fglsa\u002F202210-37","Gentoo",[84],{"url":114,"source":101,"tags":115},"https:\u002F\u002Fwww.debian.org\u002Fsecurity\u002F2022\u002Fdsa-5285",[84],{"url":81,"source":82,"tags":117},[84,85],{"url":87,"source":88,"tags":119},[90,91,84],{"url":93,"source":94,"tags":121},[91,84],{"url":97,"source":94,"tags":123},[91,84],{"url":100,"source":101,"tags":125},[90,84],{"url":104,"source":101,"tags":127},[90,84],{"url":107,"source":101,"tags":129},[],{"url":131,"source":101,"tags":132},"https:\u002F\u002Flists.debian.org\u002Fdebian-lts-announce\u002F2024\u002F09\u002Fmsg00030.html",[],{"url":110,"source":111,"tags":134},[84],{"url":114,"source":101,"tags":136},[84],19,[139],{"id":140,"name":141,"description":142,"extendedDescription":143,"status":144,"abstraction":145,"structure":146},"CWE-191","Integer Underflow (Wrap or Wraparound)","The product subtracts one value from another, such that the result is less than the minimum allowable integer value, which produces a value that is not equal to the correct result.","This can happen in signed and unsigned cases.","Draft","Base","Simple",1,[],{"title":150,"metaDescription":151,"keywords":152,"canonicalUrl":153,"structuredData":154},"What is CVE-2021-37706? Vulnerability Analysis | Security Advisory | Precursor Intelligence","Comprehensive analysis of CVE-2021-37706, a critical severity cyber security vulnerability from 2021. PJSIP is a free and open source multimedia communicatio...","CVE-2021-37706, CVE-2021-37706 vulnerability, CVE-2021-37706 security, critical severity vulnerability, cybersecurity, vulnerability analysis, security advisory, CVE database, threat intelligence, security research, vulnerability assessment, cyber threats, 2021, CVSS score, exploit, patch, remediation, teluu security, asterisk security, sangoma security, debian security, pjsip vulnerability, certified_asterisk vulnerability, asterisk vulnerability, debian_linux vulnerability","\u002Fwhat-is\u002Fcve-2021-37706",{"@context":155,"@type":156,"headline":150,"description":151,"datePublished":10,"dateModified":11,"author":157,"publisher":161,"about":165,"mainEntityOfPage":169,"articleSection":172,"keywords":173},"https:\u002F\u002Fschema.org","TechArticle",{"@type":158,"name":159,"url":160},"Organization","Precursor Intelligence","https:\u002F\u002Fprecursorintelligence.com",{"@type":158,"name":159,"url":160,"logo":162},{"@type":163,"url":164},"ImageObject","https:\u002F\u002Fprecursorintelligence.com\u002Fimg\u002Flogos\u002Feplogo.png",{"@type":166,"name":6,"description":167,"additionalType":168},"Thing","Cybersecurity Vulnerability","https:\u002F\u002Fschema.org\u002FSoftwareBug",{"@type":170,"@id":171},"WebPage","https:\u002F\u002Fprecursorintelligence.com\u002Fwhat-is\u002Fcve-2021-37706","Cybersecurity","CVE-2021-37706, CVE-2021-37706 vulnerability, CVE-2021-37706 security, critical severity vulnerability, cybersecurity, vulnerability analysis, security advisory, CVE database, threat intelligence, security research",[175,183,239],{"Operator":28,"Negate":28,"Nodes":176},[177],{"Operator":178,"Negate":49,"CPEMatch":179},"OR",[180],{"Vulnerable":4,"Criteria":59,"MatchCriteriaID":181,"VersionStartExcluding":28,"VersionStartIncluding":28,"VersionEndExcluding":28,"VersionEndIncluding":182},"6BB0273A-3235-4BC7-A1BE-7D35BABD8617","2.11.1",{"Operator":28,"Negate":28,"Nodes":184},[185],{"Operator":178,"Negate":49,"CPEMatch":186},[187,189,191,194,197,200,203,206,209,212,215,218,221,224,227,231,235],{"Vulnerable":4,"Criteria":63,"MatchCriteriaID":188,"VersionStartExcluding":28,"VersionStartIncluding":28,"VersionEndExcluding":65,"VersionEndIncluding":28},"02200524-98C1-49E2-8DFE-7BE82E1181E2",{"Vulnerable":4,"Criteria":66,"MatchCriteriaID":190,"VersionStartExcluding":28,"VersionStartIncluding":28,"VersionEndExcluding":28,"VersionEndIncluding":28},"FC49FD2F-9A64-4F92-9B73-50E37BEB207E",{"Vulnerable":4,"Criteria":192,"MatchCriteriaID":193,"VersionStartExcluding":28,"VersionStartIncluding":28,"VersionEndExcluding":28,"VersionEndIncluding":28},"cpe:2.3:a:asterisk:certified_asterisk:16.8.0:cert1:*:*:*:*:*:*","E64BCD44-2298-4710-9CC3-DF82E6A8DF94",{"Vulnerable":4,"Criteria":195,"MatchCriteriaID":196,"VersionStartExcluding":28,"VersionStartIncluding":28,"VersionEndExcluding":28,"VersionEndIncluding":28},"cpe:2.3:a:asterisk:certified_asterisk:16.8.0:cert10:*:*:*:*:*:*","91CCAB0C-C0F8-4619-AAE1-F6F13FF31570",{"Vulnerable":4,"Criteria":198,"MatchCriteriaID":199,"VersionStartExcluding":28,"VersionStartIncluding":28,"VersionEndExcluding":28,"VersionEndIncluding":28},"cpe:2.3:a:asterisk:certified_asterisk:16.8.0:cert11:*:*:*:*:*:*","F2B7CBB3-E037-416B-AD16-9A553D6A4775",{"Vulnerable":4,"Criteria":201,"MatchCriteriaID":202,"VersionStartExcluding":28,"VersionStartIncluding":28,"VersionEndExcluding":28,"VersionEndIncluding":28},"cpe:2.3:a:asterisk:certified_asterisk:16.8.0:cert12:*:*:*:*:*:*","DE7DDFE1-6A06-477A-AB45-D00053CFA7EC",{"Vulnerable":4,"Criteria":204,"MatchCriteriaID":205,"VersionStartExcluding":28,"VersionStartIncluding":28,"VersionEndExcluding":28,"VersionEndIncluding":28},"cpe:2.3:a:asterisk:certified_asterisk:16.8.0:cert2:*:*:*:*:*:*","A35C117A-6EFB-42EB-AD2A-EA7866606927",{"Vulnerable":4,"Criteria":207,"MatchCriteriaID":208,"VersionStartExcluding":28,"VersionStartIncluding":28,"VersionEndExcluding":28,"VersionEndIncluding":28},"cpe:2.3:a:asterisk:certified_asterisk:16.8.0:cert3:*:*:*:*:*:*","40003CBE-792F-4875-9E60-6F1CE0BBAA8E",{"Vulnerable":4,"Criteria":210,"MatchCriteriaID":211,"VersionStartExcluding":28,"VersionStartIncluding":28,"VersionEndExcluding":28,"VersionEndIncluding":28},"cpe:2.3:a:asterisk:certified_asterisk:16.8.0:cert4:*:*:*:*:*:*","46A7AA7B-13F2-496A-99ED-1CC13234E8CB",{"Vulnerable":4,"Criteria":213,"MatchCriteriaID":214,"VersionStartExcluding":28,"VersionStartIncluding":28,"VersionEndExcluding":28,"VersionEndIncluding":28},"cpe:2.3:a:asterisk:certified_asterisk:16.8.0:cert5:*:*:*:*:*:*","147663CB-B48D-4D89-96BF-F92FF96F347F",{"Vulnerable":4,"Criteria":216,"MatchCriteriaID":217,"VersionStartExcluding":28,"VersionStartIncluding":28,"VersionEndExcluding":28,"VersionEndIncluding":28},"cpe:2.3:a:asterisk:certified_asterisk:16.8.0:cert6:*:*:*:*:*:*","27DBBC83-930A-4ECE-8C1E-47481D881B0D",{"Vulnerable":4,"Criteria":219,"MatchCriteriaID":220,"VersionStartExcluding":28,"VersionStartIncluding":28,"VersionEndExcluding":28,"VersionEndIncluding":28},"cpe:2.3:a:asterisk:certified_asterisk:16.8.0:cert7:*:*:*:*:*:*","B987A13D-A363-4DCE-BBA1-E35E81ACBA60",{"Vulnerable":4,"Criteria":222,"MatchCriteriaID":223,"VersionStartExcluding":28,"VersionStartIncluding":28,"VersionEndExcluding":28,"VersionEndIncluding":28},"cpe:2.3:a:asterisk:certified_asterisk:16.8.0:cert8:*:*:*:*:*:*","01A5B7F9-FAD2-4C0C-937D-CF1086512130",{"Vulnerable":4,"Criteria":225,"MatchCriteriaID":226,"VersionStartExcluding":28,"VersionStartIncluding":28,"VersionEndExcluding":28,"VersionEndIncluding":28},"cpe:2.3:a:asterisk:certified_asterisk:16.8.0:cert9:*:*:*:*:*:*","F60B4271-F987-4932-86EE-45ED099661E1",{"Vulnerable":4,"Criteria":69,"MatchCriteriaID":228,"VersionStartExcluding":28,"VersionStartIncluding":229,"VersionEndExcluding":230,"VersionEndIncluding":28},"DE99C3B4-20EC-4AC8-9A0A-C690E2DBED99","16.0.0","16.24.1",{"Vulnerable":4,"Criteria":69,"MatchCriteriaID":232,"VersionStartExcluding":28,"VersionStartIncluding":233,"VersionEndExcluding":234,"VersionEndIncluding":28},"C109B569-DE0D-4AE4-A128-239077CCC05F","18.0.0","18.10.1",{"Vulnerable":4,"Criteria":69,"MatchCriteriaID":236,"VersionStartExcluding":28,"VersionStartIncluding":237,"VersionEndExcluding":238,"VersionEndIncluding":28},"44E4E3A7-8CB3-491C-98F6-F78345533E3B","19.0.0","19.2.1",{"Operator":28,"Negate":28,"Nodes":240},[241],{"Operator":178,"Negate":49,"CPEMatch":242},[243,245],{"Vulnerable":4,"Criteria":74,"MatchCriteriaID":244,"VersionStartExcluding":28,"VersionStartIncluding":28,"VersionEndExcluding":28,"VersionEndIncluding":28},"DEECE5FC-CACF-4496-A3E7-164736409252",{"Vulnerable":4,"Criteria":77,"MatchCriteriaID":246,"VersionStartExcluding":28,"VersionStartIncluding":28,"VersionEndExcluding":28,"VersionEndIncluding":28},"07B237A9-69A3-4A9C-9DA0-4E06BD37AE73",[],[],{"lastModified":11,"cacheTime":250,"version":41},1792447781339,{"score":252,"band":253,"action":254,"scoredAt":255},56,"Medium","Plan remediation","2026-10-16T06:52:48.768382+00:00"]