CVE-2023-40534

HIGH

F5 BIG-IP - Denial of Service via HTTP/2 Profile and MRF Router Configuration

Title source: llm
STIX 2.1

Description

When a client-side HTTP/2 profile and the HTTP MRF Router option are enabled for a virtual server, and an iRule using the HTTP_REQUEST 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.

References (1)

Core 1
Core References
Vendor Advisory vendor-advisory
https://my.f5.com/manage/s/article/K000133467

Scores

CVSS v3 7.5
EPSS 0.0057
EPSS Percentile 68.9%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

CISA SSVC

Vulnrichment
Exploitation none
Automatable yes
Technical Impact partial

Details

CWE
CWE-401
Status published
Products (39)
f5/big-ip_access_policy_manager 17.1.0
f5/big-ip_access_policy_manager 16.1.0 - 16.1.4.1
f5/big-ip_advanced_firewall_manager 17.1.0
f5/big-ip_advanced_firewall_manager 16.1.0 - 16.1.4.1
f5/big-ip_advanced_web_application_firewall 17.1.0
f5/big-ip_advanced_web_application_firewall 16.1.0 - 16.1.4.1
f5/big-ip_analytics 17.1.0
f5/big-ip_analytics 16.1.0 - 16.1.4.1
f5/big-ip_application_acceleration_manager 17.1.0
f5/big-ip_application_acceleration_manager 16.1.0 - 16.1.4.1
... and 29 more
Published Oct 10, 2023
Tracked Since Feb 18, 2026