Bug ID 658321: Websafe features might break in IE8

Last Modified: Sep 13, 2023

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

Known Affected Versions:
12.1.2

Fixed In:
12.1.3

Opened: Apr 13, 2017

Severity: 3-Major

Symptoms

IE8 transform all custom HTTP headers names to lowercase in case header name configured with upper-case characters, WebSafe feature might break.

Impact

FPS plugin will not find the header, as it received lower-case but configured with upper-case characters as a result, WebSafe functionality is broken (functionality which involve the custom HTTP header, e.g. ajax username header)

Conditions

custom HTTP header configured with upper case characters client is IE8.

Workaround

Set custom HTTP header name to lower case only.

Fix Information

FPS now performs case-insensitive matches for custom HTTP headers.

Behavior Change

Guides & references

K10134038: F5 Bug Tracker Filter Names and Tips