Bug ID 599655: When ramcache is configured with CPM, the ASM blocking page will get cached

Last Modified: Apr 10, 2019

Bug Tracker

Affected Product:  See more info
BIG-IP ASM(all modules)

Known Affected Versions:
11.5.1, 11.5.1 HF1, 11.5.1 HF10, 11.5.1 HF11, 11.5.1 HF2, 11.5.1 HF3, 11.5.1 HF4, 11.5.1 HF5, 11.5.1 HF6, 11.5.1 HF7, 11.5.1 HF8, 11.5.1 HF9, 11.5.2, 11.5.2 HF1, 11.5.3, 11.5.3 HF1, 11.5.3 HF2, 11.5.4, 11.5.4 HF1, 11.5.4 HF2, 11.5.4 HF3, 11.5.4 HF4, 11.5.5, 11.5.6, 11.5.7, 11.5.8, 11.5.9

Fixed In:
13.0.0

Opened: Jun 16, 2016
Severity: 3-Major

Symptoms

ASM blocking page is cached

Impact

The blocking page doesn't get reported by ASM and is missed from statistics. It can also cause false positives on traffic that shouldn't be blocking.

Conditions

ramcache is configured using CPM

Workaround

Add the following irule to the virtual: when ASM_REQUEST_BLOCKING { CACHE::disable; }

Fix Information

None

Behavior Change