CVE-2021-23011

HIGH

BIG-IP <16.0.1.1, 15.1.3, 14.1.4, 13.1.4, 12.1.6, 11.6.5.3 - DoS

Title source: llm
STIX 2.1

Description

On versions 16.0.x before 16.0.1.1, 15.1.x before 15.1.3, 14.1.x before 14.1.4, 13.1.x before 13.1.4, 12.1.x before 12.1.6, and 11.6.x before 11.6.5.3, when the BIG-IP system is buffering packet fragments for reassembly, the Traffic Management Microkernel (TMM) may consume an excessive amount of resources, eventually leading to a restart and failover event. 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/K10751325

Scores

CVSS v3 7.5
EPSS 0.0065
EPSS Percentile 71.0%
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-400
Status published
Products (14)
f5/big-ip_access_policy_manager 11.6.1 - 11.6.5.3
f5/big-ip_advanced_firewall_manager 11.6.1 - 11.6.5.3
f5/big-ip_advanced_web_application_firewall 11.6.1 - 11.6.5.3
f5/big-ip_analytics 11.6.1 - 11.6.5.3
f5/big-ip_application_acceleration_manager 11.6.1 - 11.6.5.3
f5/big-ip_application_security_manager 11.6.1 - 11.6.5.3
f5/big-ip_ddos_hybrid_defender 11.6.1 - 11.6.5.3
f5/big-ip_domain_name_system 11.6.1 - 11.6.5.3
f5/big-ip_fraud_protection_service 11.6.1 - 11.6.5.3
f5/big-ip_global_traffic_manager 11.6.1 - 11.6.5.3
... and 4 more
Published May 10, 2021
Tracked Since Feb 18, 2026