CVE-2021-22981

CVSS V2 Medium 5.8 CVSS V3 Medium 4.8
Description
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.
Overview
  • CVE ID
  • CVE-2021-22981
  • Assigner
  • f5sirt@f5.com
  • Vulnerability Status
  • Analyzed
  • Published Version
  • 2021-02-12T18:15:12
  • Last Modified Date
  • 2021-02-19T17:14:08
Weakness Enumerations
CWE URL
NVD-CWE-noinfo http://cwe.mitre.org/data/definitions/NVD-noinfo.html
CPE Configuration (Product)
CPE Vulnerable Operator Version Start Version End
cpe:2.3:a:f5:big-ip_access_policy_manager:*:*:*:*:*:*:*:* 1 OR 11.6.1 11.6.5
cpe:2.3:a:f5:big-ip_access_policy_manager:*:*:*:*:*:*:*:* 1 OR 12.1.0 12.1.5
cpe:2.3:a:f5:big-ip_advanced_firewall_manager:*:*:*:*:*:*:*:* 1 OR 11.6.1 11.6.5
cpe:2.3:a:f5:big-ip_advanced_firewall_manager:*:*:*:*:*:*:*:* 1 OR 12.1.0 12.1.5
cpe:2.3:a:f5:big-ip_advanced_web_application_firewall:*:*:*:*:*:*:*:* 1 OR 11.6.1 11.6.5
cpe:2.3:a:f5:big-ip_advanced_web_application_firewall:*:*:*:*:*:*:*:* 1 OR 12.1.0 12.1.5
cpe:2.3:a:f5:big-ip_analytics:*:*:*:*:*:*:*:* 1 OR 11.6.1 11.6.5
cpe:2.3:a:f5:big-ip_analytics:*:*:*:*:*:*:*:* 1 OR 12.1.0 12.1.5
cpe:2.3:a:f5:big-ip_application_acceleration_manager:*:*:*:*:*:*:*:* 1 OR 11.6.1 11.6.5
cpe:2.3:a:f5:big-ip_application_acceleration_manager:*:*:*:*:*:*:*:* 1 OR 12.1.0 12.1.5
cpe:2.3:a:f5:big-ip_application_security_manager:*:*:*:*:*:*:*:* 1 OR 11.6.1 11.6.5
cpe:2.3:a:f5:big-ip_application_security_manager:*:*:*:*:*:*:*:* 1 OR 12.1.0 12.1.5
cpe:2.3:a:f5:big-ip_ddos_hybrid_defender:*:*:*:*:*:*:*:* 1 OR 11.6.1 11.6.5
cpe:2.3:a:f5:big-ip_ddos_hybrid_defender:*:*:*:*:*:*:*:* 1 OR 12.1.0 12.1.5
cpe:2.3:a:f5:big-ip_domain_name_system:*:*:*:*:*:*:*:* 1 OR 11.6.1 11.6.5
cpe:2.3:a:f5:big-ip_domain_name_system:*:*:*:*:*:*:*:* 1 OR 12.1.0 12.1.5
cpe:2.3:a:f5:big-ip_fraud_protection_service:*:*:*:*:*:*:*:* 1 OR 11.6.1 11.6.5
cpe:2.3:a:f5:big-ip_fraud_protection_service:*:*:*:*:*:*:*:* 1 OR 12.1.0 12.1.5
cpe:2.3:a:f5:big-ip_global_traffic_manager:*:*:*:*:*:*:*:* 1 OR 11.6.1 11.6.5
cpe:2.3:a:f5:big-ip_global_traffic_manager:*:*:*:*:*:*:*:* 1 OR 12.1.0 12.1.5
cpe:2.3:a:f5:big-ip_link_controller:*:*:*:*:*:*:*:* 1 OR 11.6.1 11.6.5
cpe:2.3:a:f5:big-ip_link_controller:*:*:*:*:*:*:*:* 1 OR 12.1.0 12.1.5
cpe:2.3:a:f5:big-ip_local_traffic_manager:*:*:*:*:*:*:*:* 1 OR 11.6.1 11.6.5
cpe:2.3:a:f5:big-ip_local_traffic_manager:*:*:*:*:*:*:*:* 1 OR 12.1.0 12.1.5
cpe:2.3:a:f5:big-ip_policy_enforcement_manager:*:*:*:*:*:*:*:* 1 OR 11.6.1 11.6.5
cpe:2.3:a:f5:big-ip_policy_enforcement_manager:*:*:*:*:*:*:*:* 1 OR 12.1.0 12.1.5
cpe:2.3:a:f5:big-ip_ssl_orchestrator:*:*:*:*:*:*:*:* 1 OR 11.6.1 11.6.5
cpe:2.3:a:f5:big-ip_ssl_orchestrator:*:*:*:*:*:*:*:* 1 OR 12.1.0 12.1.5
CVSS Version 2
  • Version
  • 2.0
  • Vector String
  • AV:N/AC:M/Au:N/C:P/I:P/A:N
  • Access Vector
  • NETWORK
  • Access Compatibility
  • MEDIUM
  • Authentication
  • NONE
  • Confidentiality Impact
  • PARTIAL
  • Integrity Impact
  • PARTIAL
  • Availability Impact
  • NONE
  • Base Score
  • 5.8
  • Severity
  • MEDIUM
  • Exploitability Score
  • 8.6
  • Impact Score
  • 4.9
CVSS Version 3
  • Version
  • 3.1
  • Vector String
  • CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N
  • Attack Vector
  • NETWORK
  • Attack Compatibility
  • HIGH
  • Privileges Required
  • NONE
  • User Interaction
  • NONE
  • Scope
  • UNCHANGED
  • Confidentiality Impact
  • LOW
  • Availability Impact
  • NONE
  • Base Score
  • 4.8
  • Base Severity
  • MEDIUM
  • Exploitability Score
  • 2.2
  • Impact Score
  • 2.5
References
Reference URL Reference Tags
https://support.f5.com/csp/article/K09121542 Vendor Advisory
Sources
Source Name Source URL
NIST https://nvd.nist.gov/vuln/detail/CVE-2021-22981
MITRE https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-22981
History
Created Old Value New Value Data Type Notes
2022-05-10 07:22:31 Added to TrackCVE
2022-12-05 22:05:05 2021-02-12T18:15Z 2021-02-12T18:15:12 CVE Published Date updated
2022-12-05 22:05:05 2021-02-19T17:14:08 CVE Modified Date updated
2022-12-05 22:05:05 Analyzed Vulnerability Status updated