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TI-2021-05901 Aliases CVE-2021-23042GHSA-8gj7-74p4-c853

Uncontrolled resource consumption in BIG-IP

Priority LOW 35CWE-400Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
Denial of service
Confidentiality · integrity · availability
None · None · High
Fix status
No fix listed

Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-400.

Summary

On BIG-IP version 16.0.x before 16.0.1.2, 15.1.x before 15.1.3, 14.1.x before 14.1.4, 13.1.x before 13.1.4, and 12.1.x before 12.1.6, when an HTTP profile is configured on a virtual server, undisclosed requests can cause a significant increase in system resource utilization. Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.

Why it matters now

EPSS 0.00933 60th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

VendorProductAffected versionsFixed inStatusSource
—BIG-IP16.0.x before 16.0.1.2, 15.1.x before 15.1.3, 14.1.x before 14.1.4, 13.1.x before 13.1.4, and 12.1.x before 12.1.6—No fix listedCNA
  • BIG-IP Vendor— Affected 16.0.x before 16.0.1.2, 15.1.x before 15.1.3, 14.1.x before 14.1.4, 13.1.x before 13.1.4, and 12.1.x before 12.1.6 Fixed in — No fix listed CNA

CPE configurations NVD · 14

CPEVersionsRoleVendor
cpe:2.3:a:f5:big-ip_access_policy_manager:*:*:*:*:*:*:*:*12.1.0 to before 12.1.6; 13.1.0 to before 13.1.4; 14.1.0 to before 14.1.4; 15.1.0 to before 15.1.3; 16.0.0 to before 16.0.1.2VulnerableF5
cpe:2.3:a:f5:big-ip_advanced_firewall_manager:*:*:*:*:*:*:*:*12.1.0 to before 12.1.6; 13.1.0 to before 13.1.4; 14.1.0 to before 14.1.4; 15.1.0 to before 15.1.3; 16.0.0 to before 16.0.1.2VulnerableF5
cpe:2.3:a:f5:big-ip_advanced_web_application_firewall:*:*:*:*:*:*:*:*12.1.0 to before 12.1.6; 13.1.0 to before 13.1.4; 14.1.0 to before 14.1.4; 15.1.0 to before 15.1.3; 16.0.0 to before 16.0.1.2VulnerableF5
cpe:2.3:a:f5:big-ip_analytics:*:*:*:*:*:*:*:*12.1.0 to before 12.1.6; 13.1.0 to before 13.1.4; 14.1.0 to before 14.1.4; 15.1.0 to before 15.1.3; 16.0.0 to before 16.0.1.2VulnerableF5
cpe:2.3:a:f5:big-ip_application_acceleration_manager:*:*:*:*:*:*:*:*12.1.0 to before 12.1.6; 13.1.0 to before 13.1.4; 14.1.0 to before 14.1.4; 15.1.0 to before 15.1.3; 16.0.0 to before 16.0.1.2VulnerableF5
cpe:2.3:a:f5:big-ip_application_security_manager:*:*:*:*:*:*:*:*12.1.0 to before 12.1.6; 13.1.0 to before 13.1.4; 14.1.0 to before 14.1.4; 15.1.0 to before 15.1.3; 16.0.0 to before 16.0.1.2VulnerableF5
cpe:2.3:a:f5:big-ip_ddos_hybrid_defender:*:*:*:*:*:*:*:*12.1.0 to before 12.1.6; 13.1.0 to before 13.1.4; 14.1.0 to before 14.1.4; 15.1.0 to before 15.1.3; 16.0.0 to before 16.0.1.2VulnerableF5
cpe:2.3:a:f5:big-ip_domain_name_system:*:*:*:*:*:*:*:*12.1.0 to before 12.1.6; 13.1.0 to before 13.1.4; 14.1.0 to before 14.1.4; 15.1.0 to before 15.1.3; 16.0.0 to before 16.0.1.2VulnerableF5
cpe:2.3:a:f5:big-ip_fraud_protection_service:*:*:*:*:*:*:*:*12.1.0 to before 12.1.6; 13.1.0 to before 13.1.4; 14.1.0 to before 14.1.4; 15.1.0 to before 15.1.3; 16.0.0 to before 16.0.1.2VulnerableF5
cpe:2.3:a:f5:big-ip_global_traffic_manager:*:*:*:*:*:*:*:*12.1.0 to before 12.1.6; 13.1.0 to before 13.1.4; 14.1.0 to before 14.1.4; 15.1.0 to before 15.1.3; 16.0.0 to before 16.0.1.2VulnerableF5
  • cpe:2.3:a:f5:big-ip_access_policy_manager:*:*:*:*:*:*:*:* Versions 12.1.0 to before 12.1.6; 13.1.0 to before 13.1.4; 14.1.0 to before 14.1.4; 15.1.0 to before 15.1.3; 16.0.0 to before 16.0.1.2 Vulnerable ·F5
  • cpe:2.3:a:f5:big-ip_advanced_firewall_manager:*:*:*:*:*:*:*:* Versions 12.1.0 to before 12.1.6; 13.1.0 to before 13.1.4; 14.1.0 to before 14.1.4; 15.1.0 to before 15.1.3; 16.0.0 to before 16.0.1.2 Vulnerable ·F5
  • cpe:2.3:a:f5:big-ip_advanced_web_application_firewall:*:*:*:*:*:*:*:* Versions 12.1.0 to before 12.1.6; 13.1.0 to before 13.1.4; 14.1.0 to before 14.1.4; 15.1.0 to before 15.1.3; 16.0.0 to before 16.0.1.2 Vulnerable ·F5
  • cpe:2.3:a:f5:big-ip_analytics:*:*:*:*:*:*:*:* Versions 12.1.0 to before 12.1.6; 13.1.0 to before 13.1.4; 14.1.0 to before 14.1.4; 15.1.0 to before 15.1.3; 16.0.0 to before 16.0.1.2 Vulnerable ·F5
  • cpe:2.3:a:f5:big-ip_application_acceleration_manager:*:*:*:*:*:*:*:* Versions 12.1.0 to before 12.1.6; 13.1.0 to before 13.1.4; 14.1.0 to before 14.1.4; 15.1.0 to before 15.1.3; 16.0.0 to before 16.0.1.2 Vulnerable ·F5
  • cpe:2.3:a:f5:big-ip_application_security_manager:*:*:*:*:*:*:*:* Versions 12.1.0 to before 12.1.6; 13.1.0 to before 13.1.4; 14.1.0 to before 14.1.4; 15.1.0 to before 15.1.3; 16.0.0 to before 16.0.1.2 Vulnerable ·F5
  • cpe:2.3:a:f5:big-ip_ddos_hybrid_defender:*:*:*:*:*:*:*:* Versions 12.1.0 to before 12.1.6; 13.1.0 to before 13.1.4; 14.1.0 to before 14.1.4; 15.1.0 to before 15.1.3; 16.0.0 to before 16.0.1.2 Vulnerable ·F5
  • cpe:2.3:a:f5:big-ip_domain_name_system:*:*:*:*:*:*:*:* Versions 12.1.0 to before 12.1.6; 13.1.0 to before 13.1.4; 14.1.0 to before 14.1.4; 15.1.0 to before 15.1.3; 16.0.0 to before 16.0.1.2 Vulnerable ·F5
  • cpe:2.3:a:f5:big-ip_fraud_protection_service:*:*:*:*:*:*:*:* Versions 12.1.0 to before 12.1.6; 13.1.0 to before 13.1.4; 14.1.0 to before 14.1.4; 15.1.0 to before 15.1.3; 16.0.0 to before 16.0.1.2 Vulnerable ·F5
  • cpe:2.3:a:f5:big-ip_global_traffic_manager:*:*:*:*:*:*:*:* Versions 12.1.0 to before 12.1.6; 13.1.0 to before 13.1.4; 14.1.0 to before 14.1.4; 15.1.0 to before 15.1.3; 16.0.0 to before 16.0.1.2 Vulnerable ·F5
Show 4 more CPE
CPEVersionsRoleVendor
cpe:2.3:a:f5:big-ip_link_controller:*:*:*:*:*:*:*:*12.1.0 to before 12.1.6; 13.1.0 to before 13.1.4; 14.1.0 to before 14.1.4; 15.1.0 to before 15.1.3; 16.0.0 to before 16.0.1.2VulnerableF5
cpe:2.3:a:f5:big-ip_local_traffic_manager:*:*:*:*:*:*:*:*12.1.0 to before 12.1.6; 13.1.0 to before 13.1.4; 14.1.0 to before 14.1.4; 15.1.0 to before 15.1.3; 16.0.0 to before 16.0.1.2VulnerableF5
cpe:2.3:a:f5:big-ip_policy_enforcement_manager:*:*:*:*:*:*:*:*12.1.0 to before 12.1.6; 13.1.0 to before 13.1.4; 14.1.0 to before 14.1.4; 15.1.0 to before 15.1.3; 16.0.0 to before 16.0.1.2VulnerableF5
cpe:2.3:a:f5:big-ip_ssl_orchestrator:*:*:*:*:*:*:*:*12.1.0 to before 12.1.6; 13.1.0 to before 13.1.4; 14.1.0 to before 14.1.4; 15.1.0 to before 15.1.3; 16.0.0 to before 16.0.1.2VulnerableF5
  • cpe:2.3:a:f5:big-ip_link_controller:*:*:*:*:*:*:*:* Versions 12.1.0 to before 12.1.6; 13.1.0 to before 13.1.4; 14.1.0 to before 14.1.4; 15.1.0 to before 15.1.3; 16.0.0 to before 16.0.1.2 Vulnerable ·F5
  • cpe:2.3:a:f5:big-ip_local_traffic_manager:*:*:*:*:*:*:*:* Versions 12.1.0 to before 12.1.6; 13.1.0 to before 13.1.4; 14.1.0 to before 14.1.4; 15.1.0 to before 15.1.3; 16.0.0 to before 16.0.1.2 Vulnerable ·F5
  • cpe:2.3:a:f5:big-ip_policy_enforcement_manager:*:*:*:*:*:*:*:* Versions 12.1.0 to before 12.1.6; 13.1.0 to before 13.1.4; 14.1.0 to before 14.1.4; 15.1.0 to before 15.1.3; 16.0.0 to before 16.0.1.2 Vulnerable ·F5
  • cpe:2.3:a:f5:big-ip_ssl_orchestrator:*:*:*:*:*:*:*:* Versions 12.1.0 to before 12.1.6; 13.1.0 to before 13.1.4; 14.1.0 to before 14.1.4; 15.1.0 to before 15.1.3; 16.0.0 to before 16.0.1.2 Vulnerable ·F5

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2021-23042
  2. 2026-10-03 Alias added: GHSA-8gj7-74p4-c853

References

Advisory 1

  • TI-2023-25230 BIG-IP Configuration utility unauthenticated remote code execution vulnerability KEVCVSS 3.1CRITICAL 9.8
  • TI-2022-01269 Missing authentication in F5 BIG-IP KEVCVSS 3.1CRITICAL 9.8
  • TI-2021-05850 Memory corruption in BIG-IP KEVCVSS 3.1CRITICAL 9.8
  • TI-2021-05845 Server-side request forgery in BIG-IP; BIG-IQ KEVCVSS 3.1CRITICAL 9.8
  • TI-2020-04820 Path traversal in BIG-IP KEVCVSS 3.1CRITICAL 9.8
  • TI-2014-05975 GNU Bash through 4.3 bash43-025 processes trailing strings after certain malformed… KEVCVSS 3.1CRITICAL 9.8
See all 629 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences