Vulnerability Monitor

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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.


Published

2021-02-12T18:15:12.797

Last Modified

2024-11-21T05:51:03.760

Status

Modified

Source

[email protected]

Severity

CVSSv3.1: 4.8 (MEDIUM)

CVSSv2 Vector

AV:N/AC:M/Au:N/C:P/I:P/A:N

  • Access Vector: NETWORK
  • Access Complexity: MEDIUM
  • Authentication: NONE
  • Confidentiality Impact: PARTIAL
  • Integrity Impact: PARTIAL
  • Availability Impact: NONE
Exploitability Score

8.6

Impact Score

4.9

Weaknesses
  • Type: Primary
    NVD-CWE-noinfo

Affected Vendors & Products
Type Vendor Product Version/Range Vulnerable?
Application f5 big-ip_access_policy_manager ≤ 11.6.5 Yes
Application f5 big-ip_access_policy_manager ≤ 12.1.5 Yes
Application f5 big-ip_advanced_firewall_manager ≤ 11.6.5 Yes
Application f5 big-ip_advanced_firewall_manager ≤ 12.1.5 Yes
Application f5 big-ip_advanced_web_application_firewall ≤ 11.6.5 Yes
Application f5 big-ip_advanced_web_application_firewall ≤ 12.1.5 Yes
Application f5 big-ip_analytics ≤ 11.6.5 Yes
Application f5 big-ip_analytics ≤ 12.1.5 Yes
Application f5 big-ip_application_acceleration_manager ≤ 11.6.5 Yes
Application f5 big-ip_application_acceleration_manager ≤ 12.1.5 Yes
Application f5 big-ip_application_security_manager ≤ 11.6.5 Yes
Application f5 big-ip_application_security_manager ≤ 12.1.5 Yes
Application f5 big-ip_ddos_hybrid_defender ≤ 11.6.5 Yes
Application f5 big-ip_ddos_hybrid_defender ≤ 12.1.5 Yes
Application f5 big-ip_domain_name_system ≤ 11.6.5 Yes
Application f5 big-ip_domain_name_system ≤ 12.1.5 Yes
Application f5 big-ip_fraud_protection_service ≤ 11.6.5 Yes
Application f5 big-ip_fraud_protection_service ≤ 12.1.5 Yes
Application f5 big-ip_global_traffic_manager ≤ 11.6.5 Yes
Application f5 big-ip_global_traffic_manager ≤ 12.1.5 Yes
Application f5 big-ip_link_controller ≤ 11.6.5 Yes
Application f5 big-ip_link_controller ≤ 12.1.5 Yes
Application f5 big-ip_local_traffic_manager ≤ 11.6.5 Yes
Application f5 big-ip_local_traffic_manager ≤ 12.1.5 Yes
Application f5 big-ip_policy_enforcement_manager ≤ 11.6.5 Yes
Application f5 big-ip_policy_enforcement_manager ≤ 12.1.5 Yes
Application f5 big-ip_ssl_orchestrator ≤ 11.6.5 Yes
Application f5 big-ip_ssl_orchestrator ≤ 12.1.5 Yes

References