Bug ID 1037457: High CPU during specific dos mitigation

Last Modified: Feb 07, 2024

Affected Product(s):
BIG-IP ASM(all modules)

Fixed In:
17.0.0, 16.1.2.2, 15.1.5.1, 14.1.4.6, 13.1.5

Opened: Jul 29, 2021

Severity: 3-Major

Symptoms

CPU is high.

Impact

While the attack is mitigated on the BIG-IP system and does not reach the server, the CPU of the BIG-IP increases and this may impact other services on the BIG-IP device.

Conditions

A dos attack with specific characteristic is active and the policy is configured in a specific way.

Workaround

N/A

Fix Information

A specific high CPU scenario during dos attacks was fixed.

Behavior Change

Guides & references

K10134038: F5 Bug Tracker Filter Names and Tips