Bug ID 508338: Under rare conditions cookies are enforced as base64 instead of clear text

Last Modified: Oct 06, 2020

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, 11.5.10, 11.5.2, 11.6.0, 11.6.0 HF1, 11.6.0 HF2, 11.6.0 HF3, 11.6.0 HF4

Fixed In:
12.0.0, 11.6.0 HF5, 11.5.2 HF1

Opened: Feb 20, 2015
Severity: 3-Major


False positive 'modified domain cookie' violation or false positive 'illegal base64 value' violation created.


The violation 'illegal base64 value' on a cookie appears on transactions, even for cookies that are not marked as base64 value cookies.


No specific conditions. This is a rarely occurring issue.



Fix Information

This release fixes an issue that rarely caused a false positive illegal base64 value, or false positive modified domain cookie violation.

Behavior Change