CVE-2021-23034

HIGH

BIG-IP <16.1.0, 15.1.x <15.1.3.1 - DoS

Title source: llm
STIX 2.1

Description

On BIG-IP version 16.x before 16.1.0 and 15.1.x before 15.1.3.1, when a DNS profile using a DNS cache resolver is configured on a virtual server, undisclosed requests can cause the Traffic Management Microkernel (TMM) process to terminate. Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.

References (1)

Core 1
Core References
Vendor Advisory x_refsource_misc
https://support.f5.com/csp/article/K30523121

Scores

CVSS v3 7.5
EPSS 0.0092
EPSS Percentile 76.2%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Details

CWE
CWE-20 CWE-668
Status published
Products (11)
f5/big-ip_access_policy_manager 15.1.0 - 15.1.3.1
f5/big-ip_advanced_firewall_manager 15.1.0 - 15.1.3.1
f5/big-ip_analytics 15.1.0 - 15.1.3.1
f5/big-ip_application_acceleration_manager 15.1.0 - 15.1.3.1
f5/big-ip_application_security_manager 15.1.0 - 15.1.3.1
f5/big-ip_domain_name_system 15.1.0 - 15.1.3.1
f5/big-ip_fraud_protection_service 15.1.0 - 15.1.3.1
f5/big-ip_global_traffic_manager 15.1.0 - 15.1.3.1
f5/big-ip_link_controller 15.1.0 - 15.1.3.1
f5/big-ip_local_traffic_manager 15.1.0 - 15.1.3.1
... and 1 more
Published Sep 14, 2021
Tracked Since Feb 18, 2026