CVE-2023-40534: BIG-IP HTTP/2 vulnerability
Undisclosed requests can cause the Traffic Management Microkernel (TMM) to terminate when a client-side HTTP/2 profile and the HTTP MRF Router option are enabled for a virtual server and an iRule using the HTTPREQUEST event or Local Traffic Policy are associated with the virtual server. TMM can also terminate when a client-side HTTP/2 profile and the HTTP MRF Router option are enabled, regardless of the presence of the iRule.
Other sources
When a client-side HTTP/2 profile and the HTTP MRF Router option are enabled for a virtual server, and an iRule using the HTTPREQUEST event or Local Traffic Policy are associated with the virtual server, undisclosed requests can cause TMM to terminate. Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.
Affected Software
Event History
Frequently Asked Questions
What is CVE-2023-40534?
CVE-2023-40534 is a vulnerability that can cause undisclosed requests to terminate TMM when a client-side HTTP/2 profile and HTTP MRF Router option are enabled for a virtual server with an associated iRule using the HTTP_REQUEST event or Local Traffic Policy.
Which software versions are affected by CVE-2023-40534?
Software versions 16.1.0 to 16.1.4.1 and 17.1.0 of F5 BIG-IP Access Policy Manager, Advanced Firewall Manager, Advanced Web Application Firewall, Analytics, Application Acceleration Manager, Application Security Manager, Application Visibility and Reporting, Carrier-grade NAT, DDoS Hybrid Defender, Domain Name System, Edge Gateway, Fraud Protection Service, Global Traffic Manager, Link Controller, Local Traffic Manager, Next Service Proxy for Kubernetes, Policy Enforcement Manager, SSL Orchestrator, Webaccelerator, and Websafe are affected by CVE-2023-40534.
What is the severity of CVE-2023-40534?
CVE-2023-40534 has a severity rating of 7.5 (high).
How can I fix CVE-2023-40534?
To fix CVE-2023-40534, upgrade to a version higher than 16.1.4.1 or 17.1.0.
Where can I find more information about CVE-2023-40534?
You can find more information about CVE-2023-40534 at the following link: [https://my.f5.com/manage/s/article/K000133467](https://my.f5.com/manage/s/article/K000133467)