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TI-2018-04005 Aliases CVE-2018-5500GHSA-6jjh-35m4-xm42

Uncontrolled resource consumption in F5 BIG-IP LTM, AAM, AFM, Analytics, APM, ASM, DNS…

Priority LOW 29CWE-400Published · Updated

Key facts

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

Attack profile from CVSS 3.0 · NVD. Fix status from CNA. Impact type from CWE-400.

Summary

On F5 BIG-IP systems running 13.0.0, 12.1.0 - 12.1.3.1, or 11.6.1 - 11.6.2, every Multipath TCP (MCTCP) connection established leaks a small amount of memory. Virtual server using TCP profile with Multipath TCP (MCTCP) feature enabled will be affected by this issue.

Why it matters now

EPSS 0.01344 71st 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
F5BIG-IP LTM, AAM, AFM, Analytics, APM, ASM, DNS, Edge Gateway, GTM, Link Controller, PEM, WebAccelerator, WebSafe13.0.0; 12.1.0 - 12.1.3.1; 11.6.1 - 11.6.2—No fix listedCNA
  • BIG-IP LTM, AAM, AFM, Analytics, APM, ASM, DNS, Edge Gateway, GTM, Link Controller, PEM, WebAccelerator, WebSafe VendorF5 Affected 13.0.0; 12.1.0 - 12.1.3.1; 11.6.1 - 11.6.2 Fixed in — No fix listed CNA

CPE configurations NVD · 26

CPEVersionsRoleVendor
cpe:2.3:a:f5:big-ip_local_traffic_manager:*:*:*:*:*:*:*:*11.6.1 – 11.6.2; 12.1.0 – 12.1.3.1VulnerableF5
cpe:2.3:a:f5:big-ip_local_traffic_manager:13.0.0:*:*:*:*:*:*:*13.0.0VulnerableF5
cpe:2.3:a:f5:big-ip_application_acceleration_manager:*:*:*:*:*:*:*:*11.6.1 – 11.6.2; 12.1.0 – 12.1.3.1VulnerableF5
cpe:2.3:a:f5:big-ip_application_acceleration_manager:13.0.0:*:*:*:*:*:*:*13.0.0VulnerableF5
cpe:2.3:a:f5:big-ip_advanced_firewall_manager:*:*:*:*:*:*:*:*11.6.1 – 11.6.2; 12.1.0 – 12.1.3.1VulnerableF5
cpe:2.3:a:f5:big-ip_advanced_firewall_manager:13.0.0:*:*:*:*:*:*:*13.0.0VulnerableF5
cpe:2.3:a:f5:big-ip_analytics:*:*:*:*:*:*:*:*11.6.1 – 11.6.2; 12.1.0 – 12.1.3.1VulnerableF5
cpe:2.3:a:f5:big-ip_analytics:13.0.0:*:*:*:*:*:*:*13.0.0VulnerableF5
cpe:2.3:a:f5:big-ip_access_policy_manager:*:*:*:*:*:*:*:*11.6.1 – 11.6.2; 12.1.0 – 12.1.3.1VulnerableF5
cpe:2.3:a:f5:big-ip_access_policy_manager:13.0.0:*:*:*:*:*:*:*13.0.0VulnerableF5
  • cpe:2.3:a:f5:big-ip_local_traffic_manager:*:*:*:*:*:*:*:* Versions 11.6.1 – 11.6.2; 12.1.0 – 12.1.3.1 Vulnerable ·F5
  • cpe:2.3:a:f5:big-ip_local_traffic_manager:13.0.0:*:*:*:*:*:*:* Versions 13.0.0 Vulnerable ·F5
  • cpe:2.3:a:f5:big-ip_application_acceleration_manager:*:*:*:*:*:*:*:* Versions 11.6.1 – 11.6.2; 12.1.0 – 12.1.3.1 Vulnerable ·F5
  • cpe:2.3:a:f5:big-ip_application_acceleration_manager:13.0.0:*:*:*:*:*:*:* Versions 13.0.0 Vulnerable ·F5
  • cpe:2.3:a:f5:big-ip_advanced_firewall_manager:*:*:*:*:*:*:*:* Versions 11.6.1 – 11.6.2; 12.1.0 – 12.1.3.1 Vulnerable ·F5
  • cpe:2.3:a:f5:big-ip_advanced_firewall_manager:13.0.0:*:*:*:*:*:*:* Versions 13.0.0 Vulnerable ·F5
  • cpe:2.3:a:f5:big-ip_analytics:*:*:*:*:*:*:*:* Versions 11.6.1 – 11.6.2; 12.1.0 – 12.1.3.1 Vulnerable ·F5
  • cpe:2.3:a:f5:big-ip_analytics:13.0.0:*:*:*:*:*:*:* Versions 13.0.0 Vulnerable ·F5
  • cpe:2.3:a:f5:big-ip_access_policy_manager:*:*:*:*:*:*:*:* Versions 11.6.1 – 11.6.2; 12.1.0 – 12.1.3.1 Vulnerable ·F5
  • cpe:2.3:a:f5:big-ip_access_policy_manager:13.0.0:*:*:*:*:*:*:* Versions 13.0.0 Vulnerable ·F5
Show 16 more CPE
CPEVersionsRoleVendor
cpe:2.3:a:f5:big-ip_application_security_manager:*:*:*:*:*:*:*:*11.6.1 – 11.6.2; 12.1.0 – 12.1.3.1VulnerableF5
cpe:2.3:a:f5:big-ip_application_security_manager:13.0.0:*:*:*:*:*:*:*13.0.0VulnerableF5
cpe:2.3:a:f5:big-ip_dns:*:*:*:*:*:*:*:*11.6.1 – 11.6.2; 12.1.0 – 12.1.3.1VulnerableF5
cpe:2.3:a:f5:big-ip_dns:13.0.0:*:*:*:*:*:*:*13.0.0VulnerableF5
cpe:2.3:a:f5:big-ip_link_controller:*:*:*:*:*:*:*:*11.6.1 – 11.6.2; 12.1.0 – 12.1.3.1VulnerableF5
cpe:2.3:a:f5:big-ip_link_controller:13.0.0:*:*:*:*:*:*:*13.0.0VulnerableF5
cpe:2.3:a:f5:big-ip_policy_enforcement_manager:*:*:*:*:*:*:*:*11.6.1 – 11.6.2; 12.1.0 – 12.1.3.1VulnerableF5
cpe:2.3:a:f5:big-ip_policy_enforcement_manager:13.0.0:*:*:*:*:*:*:*13.0.0VulnerableF5
cpe:2.3:a:f5:big-ip_websafe:*:*:*:*:*:*:*:*11.6.1 – 11.6.2; 12.1.0 – 12.1.3.1VulnerableF5
cpe:2.3:a:f5:big-ip_websafe:13.0.0:*:*:*:*:*:*:*13.0.0VulnerableF5
cpe:2.3:a:f5:big-ip_edge_gateway:*:*:*:*:*:*:*:*11.6.1 – 11.6.2; 12.1.0 – 12.1.3.1VulnerableF5
cpe:2.3:a:f5:big-ip_edge_gateway:13.0.0:*:*:*:*:*:*:*13.0.0VulnerableF5
cpe:2.3:a:f5:big-ip_global_traffic_manager:*:*:*:*:*:*:*:*11.6.1 – 11.6.2; 12.1.0 – 12.1.3.1VulnerableF5
cpe:2.3:a:f5:big-ip_global_traffic_manager:13.0.0:*:*:*:*:*:*:*13.0.0VulnerableF5
cpe:2.3:a:f5:big-ip_webaccelerator:*:*:*:*:*:*:*:*11.6.1 – 11.6.2; 12.1.0 – 12.1.3.1VulnerableF5
cpe:2.3:a:f5:big-ip_webaccelerator:13.0.0:*:*:*:*:*:*:*13.0.0VulnerableF5
  • cpe:2.3:a:f5:big-ip_application_security_manager:*:*:*:*:*:*:*:* Versions 11.6.1 – 11.6.2; 12.1.0 – 12.1.3.1 Vulnerable ·F5
  • cpe:2.3:a:f5:big-ip_application_security_manager:13.0.0:*:*:*:*:*:*:* Versions 13.0.0 Vulnerable ·F5
  • cpe:2.3:a:f5:big-ip_dns:*:*:*:*:*:*:*:* Versions 11.6.1 – 11.6.2; 12.1.0 – 12.1.3.1 Vulnerable ·F5
  • cpe:2.3:a:f5:big-ip_dns:13.0.0:*:*:*:*:*:*:* Versions 13.0.0 Vulnerable ·F5
  • cpe:2.3:a:f5:big-ip_link_controller:*:*:*:*:*:*:*:* Versions 11.6.1 – 11.6.2; 12.1.0 – 12.1.3.1 Vulnerable ·F5
  • cpe:2.3:a:f5:big-ip_link_controller:13.0.0:*:*:*:*:*:*:* Versions 13.0.0 Vulnerable ·F5
  • cpe:2.3:a:f5:big-ip_policy_enforcement_manager:*:*:*:*:*:*:*:* Versions 11.6.1 – 11.6.2; 12.1.0 – 12.1.3.1 Vulnerable ·F5
  • cpe:2.3:a:f5:big-ip_policy_enforcement_manager:13.0.0:*:*:*:*:*:*:* Versions 13.0.0 Vulnerable ·F5
  • cpe:2.3:a:f5:big-ip_websafe:*:*:*:*:*:*:*:* Versions 11.6.1 – 11.6.2; 12.1.0 – 12.1.3.1 Vulnerable ·F5
  • cpe:2.3:a:f5:big-ip_websafe:13.0.0:*:*:*:*:*:*:* Versions 13.0.0 Vulnerable ·F5
  • cpe:2.3:a:f5:big-ip_edge_gateway:*:*:*:*:*:*:*:* Versions 11.6.1 – 11.6.2; 12.1.0 – 12.1.3.1 Vulnerable ·F5
  • cpe:2.3:a:f5:big-ip_edge_gateway:13.0.0:*:*:*:*:*:*:* Versions 13.0.0 Vulnerable ·F5
  • cpe:2.3:a:f5:big-ip_global_traffic_manager:*:*:*:*:*:*:*:* Versions 11.6.1 – 11.6.2; 12.1.0 – 12.1.3.1 Vulnerable ·F5
  • cpe:2.3:a:f5:big-ip_global_traffic_manager:13.0.0:*:*:*:*:*:*:* Versions 13.0.0 Vulnerable ·F5
  • cpe:2.3:a:f5:big-ip_webaccelerator:*:*:*:*:*:*:*:* Versions 11.6.1 – 11.6.2; 12.1.0 – 12.1.3.1 Vulnerable ·F5
  • cpe:2.3:a:f5:big-ip_webaccelerator:13.0.0:*:*:*:*:*:*:* Versions 13.0.0 Vulnerable ·F5

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2018-5500
  2. 2026-10-03 Alias added: GHSA-6jjh-35m4-xm42

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