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This vulnerability is due to improper memory management in the proxy service of an affected device. An attacker could exploit this vulnerability by establishing a large number of HTTPS connections to the affected device. A successful exploit could allow the attacker to cause the system to stop processing new connections, which could result in a DoS condition. Note: Manual intervention may be required to recover from this situation.","A vulnerability in the proxy service of Cisco AsyncOS for Cisco Web Security Appliance (WSA) could allow an unauthenticated, remote attacker to exhaust syste...","2021-10-06T20:15:08.49","2023-11-07T03:36:05.39",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":37,"CVSSMetricV40":26},[16,29],{"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,{"Source":30,"Type":31,"CVSSData":32,"ExploitabilityScore":27,"ImpactScore":36},"d1c1063e-7a18-46af-9102-31f8928bc633","Secondary",{"Version":20,"VectorString":33,"AttackVector":21,"AttackComplexity":22,"PrivilegesRequired":23,"UserInteraction":23,"Scope":34,"ConfidentialityImpact":23,"IntegrityImpact":23,"AvailabilityImpact":25,"BaseScore":35,"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},"CVSS:3.1\u002FAV:N\u002FAC:L\u002FPR:N\u002FUI:N\u002FS:C\u002FC:N\u002FI:N\u002FA:H","CHANGED",8.6,4,[38],{"Source":17,"Type":18,"CVSSData":39,"BaseSeverity":25,"ExploitabilityScore":44,"ImpactScore":45,"ACInsufInfo":26,"ObtainAllPrivilege":26,"ObtainUserPrivilege":26,"ObtainOtherPrivilege":26,"UserInteractionRequired":26},{"Version":40,"VectorString":41,"AccessVector":21,"AccessComplexity":22,"Authentication":23,"ConfidentialityImpact":23,"IntegrityImpact":23,"AvailabilityImpact":42,"BaseScore":43,"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",7.8,10,6.9,0.01432,[46,46,46,46,46,46,46],"High",[50,55,59,62,65,68,71,74],{"vendor":51,"product":52,"version":53,"criteria":54,"vulnerable":4},"cisco","asyncos","*","cpe:2.3:o:cisco:asyncos:*:*:*:*:*:*:*:*",{"vendor":51,"product":56,"version":57,"criteria":58,"vulnerable":4},"web_security_appliance_s170","-","cpe:2.3:h:cisco:web_security_appliance_s170:-:*:*:*:*:*:*:*",{"vendor":51,"product":60,"version":57,"criteria":61,"vulnerable":4},"web_security_appliance_s190","cpe:2.3:h:cisco:web_security_appliance_s190:-:*:*:*:*:*:*:*",{"vendor":51,"product":63,"version":57,"criteria":64,"vulnerable":4},"web_security_appliance_s380","cpe:2.3:h:cisco:web_security_appliance_s380:-:*:*:*:*:*:*:*",{"vendor":51,"product":66,"version":57,"criteria":67,"vulnerable":4},"web_security_appliance_s390","cpe:2.3:h:cisco:web_security_appliance_s390:-:*:*:*:*:*:*:*",{"vendor":51,"product":69,"version":57,"criteria":70,"vulnerable":4},"web_security_appliance_s680","cpe:2.3:h:cisco:web_security_appliance_s680:-:*:*:*:*:*:*:*",{"vendor":51,"product":72,"version":57,"criteria":73,"vulnerable":4},"web_security_appliance_s690","cpe:2.3:h:cisco:web_security_appliance_s690:-:*:*:*:*:*:*:*",{"vendor":51,"product":75,"version":57,"criteria":76,"vulnerable":4},"web_security_appliance_s690x","cpe:2.3:h:cisco:web_security_appliance_s690x:-:*:*:*:*:*:*:*",8,[79],{"url":80,"source":81,"tags":82},"https:\u002F\u002Ftools.cisco.com\u002Fsecurity\u002Fcenter\u002Fcontent\u002FCiscoSecurityAdvisory\u002Fcisco-sa-wsa-dos-fmHdKswk","Cisco",[83],"Vendor Advisory",1,[86],{"id":87,"name":88,"description":89,"extendedDescription":90,"status":91,"abstraction":92,"structure":93},"CWE-401","Missing Release of Memory after Effective Lifetime","The product does not sufficiently track and release allocated memory after it has been used, which slowly consumes remaining memory.","This is often triggered by improper handling of malformed data or unexpectedly interrupted sessions.  In some languages, developers are responsible for tracking memory allocation and releasing the memory.  If there are no more pointers or references to the memory, then it can no longer be tracked and identified for release.","Draft","Variant","Simple",false,[],{"title":97,"metaDescription":98,"keywords":99,"canonicalUrl":100,"structuredData":101},"What is CVE-2021-34698? Vulnerability Analysis | Security Advisory | Precursor Intelligence","Comprehensive analysis of CVE-2021-34698, a high severity cyber security vulnerability from 2021. 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