Bug ID 482625: Pages with utf-8 Content-Type and utf-16 META tag do not render

Last Modified: Sep 13, 2023

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

Known Affected Versions:
11.5.1, 11.5.2, 11.5.3, 11.5.4, 11.5.5, 11.5.6, 11.5.7, 11.5.8, 11.5.9, 11.5.10, 11.6.0, 11.6.1, 11.6.2, 11.6.3, 11.6.3.1, 11.6.3.2, 11.6.3.3, 11.6.3.4, 11.6.4, 11.6.5, 11.6.5.1, 11.6.5.2, 11.6.5.3, 12.0.0, 12.0.0 HF1, 12.1.0 HF1, 12.0.0 HF2, 12.1.0 HF2, 12.0.0 HF3, 12.0.0 HF4, 12.1.1 HF1, 12.1.1 HF2, 12.1.2 HF1, 12.1.2 HF2

Fixed In:
12.1.0

Opened: Oct 03, 2014

Severity: 3-Major

Related Article: K16889

Symptoms

Some pages cannot be displayed. A page has a Content-type header with charset utf-8. The payload has a META tag with charset utf-16. Actual data appears to be utf-8. Rewriting the page inserts a utf-16 BOM in the response, causing the page to not load.

Impact

Web-application cannot display some pages.

Conditions

Pages that contain utf-8 Content-Type headers but utf-16 META tags

Workaround

An iRule can be used to fix the META charset and allow the page to load.

Fix Information

Erroneous multibyte charset setting is ignored if META tag is inside ASCII-compatible page.

Behavior Change

Guides & references

K10134038: F5 Bug Tracker Filter Names and Tips