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Severity
Low
Analysis Summary
CVE-2018-0732
During key agreement in a TLS handshake using a DH(E) based ciphersuite a malicious server can send a very large prime value to the client. This will cause the client to spend an unreasonably long period of time generating a key for this prime resulting in a hang until the client has finished. This could be exploited in a Denial Of Service attack.
Impact
Denial of service
Affected Products
F5 BIG-IP Local Traffic Manager (LTM) 11.x
F5 BIG-IP Application Security Manager (ASM) 11.x
F5 BIG-IP Local Traffic Manager (LTM) 12.x
F5 BIG-IP Application Security Manager (ASM) 12.x
F5 BIG-IP Local Traffic Manager (LTM) 13.x
F5 BIG-IP Application Security Manager (ASM) 13.x
F5 BIG-IQ Centralized Management 5.x
F5 BIG-IP Local Traffic Manager (LTM) 14.x
F5 TMOS 11.x
F5 BIG-IP Global Traffic Manager (GTM) 11.x
F5 Enterprise Manager 3.x
F5 BIG-IP Access Policy Manager (APM) 11.x
F5 BIG-IP Application Acceleration Manager (AAM) 11.x
F5 BIG-IP Advanced Firewall Manager (AFM) 11.x
F5 BIG-IP Analytics (AVR) 11.x
F5 BIG-IP Link Controller 11.x
F5 BIG-IP Policy Enforcement Manager (PEM) 11.x
F5 BIG-IP Access Policy Manager (APM) 12.x
F5 BIG-IP Access Policy Manager (APM) 13.x
F5 BIG-IP Advanced Firewall Manager (AFM) 12.x
F5 BIG-IP Advanced Firewall Manager (AFM) 13.x
F5 TMOS 12.x
F5 BIG-IP DNS (formerly Global Traffic Manager (GTM)) 12.x
Remediation
Update to a fixed version if available:
Enterprise Manager, BIG-IQ Centralized Management:
No official solution is currently available.
BIG-IP LTM 11.x, 12.x, 13.x, 14.x:
Update to version 11.5.9, 11.6.3.3, 12.1.4, 13.1.1.2, or 14.1.0.2.
BIG-IP AAM, AFM, Analytics, APM, ASM, DNS, Edge Gateway, FPS, GTM, Link Controller, PEM, WebAccelerator:
Update to version 11.5.9, 11.6.3.3, 12.1.4, or 13.1.1.2.