CVE-2021-22981

On all versions of BIG-IP 12.1.x and 11.6.x, the original TLS protocol includes a weakness in the master secret negotiation that is mitigated by the Extended Master Secret (EMS) extension defined in RFC 7627. TLS connections that do not use EMS are vulnerable to man-in-the-middle attacks during renegotiation. Note: Software versions which have reached End of Software Development (EoSD) are not evaluated.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTNIST
4.8 MEDIUM
NETWORK
HIGH
NONE
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N
f5CNA
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CVEADP
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Base Score
CVSS 3.x
EPSS Score
Percentile: 45%
VendorProductVersion
f5big-ip_access_policy_manager
11.6.1 ≤
𝑥
≤ 11.6.5
f5big-ip_access_policy_manager
12.1.0 ≤
𝑥
≤ 12.1.5
f5big-ip_advanced_firewall_manager
11.6.1 ≤
𝑥
≤ 11.6.5
f5big-ip_advanced_firewall_manager
12.1.0 ≤
𝑥
≤ 12.1.5
f5big-ip_advanced_web_application_firewall
11.6.1 ≤
𝑥
≤ 11.6.5
f5big-ip_advanced_web_application_firewall
12.1.0 ≤
𝑥
≤ 12.1.5
f5big-ip_analytics
11.6.1 ≤
𝑥
≤ 11.6.5
f5big-ip_analytics
12.1.0 ≤
𝑥
≤ 12.1.5
f5big-ip_application_acceleration_manager
11.6.1 ≤
𝑥
≤ 11.6.5
f5big-ip_application_acceleration_manager
12.1.0 ≤
𝑥
≤ 12.1.5
f5big-ip_application_security_manager
11.6.1 ≤
𝑥
≤ 11.6.5
f5big-ip_application_security_manager
12.1.0 ≤
𝑥
≤ 12.1.5
f5big-ip_ddos_hybrid_defender
11.6.1 ≤
𝑥
≤ 11.6.5
f5big-ip_ddos_hybrid_defender
12.1.0 ≤
𝑥
≤ 12.1.5
f5big-ip_domain_name_system
11.6.1 ≤
𝑥
≤ 11.6.5
f5big-ip_domain_name_system
12.1.0 ≤
𝑥
≤ 12.1.5
f5big-ip_fraud_protection_service
11.6.1 ≤
𝑥
≤ 11.6.5
f5big-ip_fraud_protection_service
12.1.0 ≤
𝑥
≤ 12.1.5
f5big-ip_global_traffic_manager
11.6.1 ≤
𝑥
≤ 11.6.5
f5big-ip_global_traffic_manager
12.1.0 ≤
𝑥
≤ 12.1.5
f5big-ip_link_controller
11.6.1 ≤
𝑥
≤ 11.6.5
f5big-ip_link_controller
12.1.0 ≤
𝑥
≤ 12.1.5
f5big-ip_local_traffic_manager
11.6.1 ≤
𝑥
≤ 11.6.5
f5big-ip_local_traffic_manager
12.1.0 ≤
𝑥
≤ 12.1.5
f5big-ip_policy_enforcement_manager
11.6.1 ≤
𝑥
≤ 11.6.5
f5big-ip_policy_enforcement_manager
12.1.0 ≤
𝑥
≤ 12.1.5
f5big-ip_ssl_orchestrator
11.6.1 ≤
𝑥
≤ 11.6.5
f5big-ip_ssl_orchestrator
12.1.0 ≤
𝑥
≤ 12.1.5
𝑥
= Vulnerable software versions