Bug ID 774457: Unexpected 'Illegal entry point' and 'Illegal flow to URL' violations after upgrading to version without account_id

Last Modified: Sep 23, 2021

Bug Tracker

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

Known Affected Versions:
15.0.0, 15.0.1, 15.0.1.1, 15.0.1.2, 15.0.1.3, 15.0.1.4, 15.1.0, 15.1.0.1, 15.1.0.2, 15.1.0.3, 15.1.0.4, 15.1.0.5, 15.1.1, 15.1.2, 15.1.2.1, 15.1.3, 15.1.3.1, 15.1.4

Opened: Apr 19, 2019
Severity: 3-Major

Symptoms

When upgrading from a version to v15.1.0 or later, the system might report 'Illegal entry point' and 'Illegal flow to URL' messages.

Impact

False-positive violations.

Conditions

1. Upgrading from a version prior to v15.1.0 to a v15.1.0 or higher. 2. The policy contains flows, and illegal flow and illegal entry point are configured.

Workaround

You can use either of the following workarounds: -- Turn off blocking from the illegal flows violations before upgrading. Then wait for some time until the violation alarms no longer appear. -- Use an iRule that unblocks these violations and deletes the ASM cookies when that happens.

Fix Information

None

Behavior Change