Vulnerability Details CVE-2021-23000
On BIG-IP versions 13.1.3.4-13.1.3.6 and 12.1.5.2, if the tmm.http.rfc.enforcement BigDB key is enabled in a BIG-IP system, or the Bad host header value is checked in the AFM HTTP security profile associated with a virtual server, in rare instances, a specific sequence of malicious requests may cause TMM to restart. Note: Software versions which have reached End of Software Development (EoSD) are not evaluated.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.006
EPSS Ranking 69.5%
CVSS Severity
CVSS v3 Score 7.5
CVSS v2 Score 4.3
References
Products affected by CVE-2021-23000
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cpe:2.3:a:f5:big-ip_access_policy_manager:12.1.5.2
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cpe:2.3:a:f5:big-ip_access_policy_manager:13.1.3.4
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cpe:2.3:a:f5:big-ip_access_policy_manager:13.1.3.5
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cpe:2.3:a:f5:big-ip_advanced_firewall_manager:12.1.5.2
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cpe:2.3:a:f5:big-ip_advanced_firewall_manager:13.1.3.4
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cpe:2.3:a:f5:big-ip_advanced_firewall_manager:13.1.3.5
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cpe:2.3:a:f5:big-ip_advanced_web_application_firewall:12.1.5.2
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cpe:2.3:a:f5:big-ip_advanced_web_application_firewall:13.1.3.4
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cpe:2.3:a:f5:big-ip_advanced_web_application_firewall:13.1.3.5
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cpe:2.3:a:f5:big-ip_analytics:12.1.5.2
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cpe:2.3:a:f5:big-ip_analytics:13.1.3.4
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cpe:2.3:a:f5:big-ip_analytics:13.1.3.5
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cpe:2.3:a:f5:big-ip_application_acceleration_manager:12.1.5.2
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cpe:2.3:a:f5:big-ip_application_acceleration_manager:13.1.3.4
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cpe:2.3:a:f5:big-ip_application_acceleration_manager:13.1.3.5
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cpe:2.3:a:f5:big-ip_application_security_manager:12.1.5.2
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cpe:2.3:a:f5:big-ip_application_security_manager:13.1.3.4
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cpe:2.3:a:f5:big-ip_application_security_manager:13.1.3.5
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cpe:2.3:a:f5:big-ip_ddos_hybrid_defender:12.1.5.2
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cpe:2.3:a:f5:big-ip_ddos_hybrid_defender:13.1.3.4
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cpe:2.3:a:f5:big-ip_ddos_hybrid_defender:13.1.3.5
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cpe:2.3:a:f5:big-ip_domain_name_system:12.1.5.2
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cpe:2.3:a:f5:big-ip_domain_name_system:13.1.3.4
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cpe:2.3:a:f5:big-ip_domain_name_system:13.1.3.5
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cpe:2.3:a:f5:big-ip_fraud_protection_service:12.1.5.2
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cpe:2.3:a:f5:big-ip_fraud_protection_service:13.1.3.4
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cpe:2.3:a:f5:big-ip_fraud_protection_service:13.1.3.5
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cpe:2.3:a:f5:big-ip_global_traffic_manager:12.1.5.2
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cpe:2.3:a:f5:big-ip_global_traffic_manager:13.1.3.4
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cpe:2.3:a:f5:big-ip_global_traffic_manager:13.1.3.5
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cpe:2.3:a:f5:big-ip_link_controller:12.1.5.2
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cpe:2.3:a:f5:big-ip_link_controller:13.1.3.4
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cpe:2.3:a:f5:big-ip_link_controller:13.1.3.5
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cpe:2.3:a:f5:big-ip_local_traffic_manager:12.1.5.2
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cpe:2.3:a:f5:big-ip_local_traffic_manager:13.1.3.4
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cpe:2.3:a:f5:big-ip_local_traffic_manager:13.1.3.5
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cpe:2.3:a:f5:big-ip_policy_enforcement_manager:12.1.5.2
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cpe:2.3:a:f5:big-ip_policy_enforcement_manager:13.1.3.4
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cpe:2.3:a:f5:big-ip_policy_enforcement_manager:13.1.3.5
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cpe:2.3:a:f5:ssl_orchestrator:12.1.5.2
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cpe:2.3:a:f5:ssl_orchestrator:13.1.3.4