Bug ID 549794: Requests my be dropped when proactive bot defense is on, but Block Suspicious Browsers is off

Last Modified: Sep 13, 2023

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

Known Affected Versions:
12.0.0, 12.1.0 HF1, 12.1.0 HF2, 12.1.1 HF1, 12.1.1 HF2, 12.1.2 HF1, 12.1.2 HF2

Fixed In:
12.1.0, 12.0.0 HF1

Opened: Oct 01, 2015

Severity: 3-Major

Symptoms

When proactive bot defense is on in a DoS profile, but the Block suspicious browsers check box is disabled, some resources as images, CSS files, etc. may be dropped by DoSl7 after grace period has passed.

Impact

Page may not be loaded correctly as some of its resources can not be loaded

Conditions

-proactive bot defense is on -suspicious browsers box is set to off

Workaround

N/A

Fix Information

An issue with renewing the proactive cookie, which caused some resources to be dropped in a specific configuration, was fixed.

Behavior Change

Guides & references

K10134038: F5 Bug Tracker Filter Names and Tips