Bug ID 789889: Fetch operation fails

Last Modified: Aug 08, 2019

Bug Tracker

Affected Product:  See more info
BIG-IP AAM, WAM(all modules)

Known Affected Versions:
11.6.0, 11.6.0 HF1, 11.6.0 HF2, 11.6.0 HF3, 11.6.0 HF4, 11.6.0 HF5, 11.6.0 HF6, 11.6.0 HF7, 11.6.0 HF8, 11.6.1, 11.6.1 HF1, 11.6.1 HF2, 11.6.2, 11.6.2 HF1, 11.6.3,,,,, 11.6.4, 12.1.0, 12.1.0 HF1, 12.1.0 HF2, 12.1.1, 12.1.1 HF1, 12.1.1 HF2, 12.1.2, 12.1.2 HF1, 12.1.2 HF2, 12.1.3,,,,,,,, 12.1.4,, 12.1.5, 13.1.0,,,,,,,,, 13.1.1,,,,,, 13.1.3, 14.0.0,,,,,, 14.1.0,,,,,,, 15.0.0, 15.0.1

Opened: Jun 04, 2019
Severity: 3-Major


AAM/WAM provides an option to combine several CSS or JS files into a single resource using a WA concatenation option. When the URL is parsed, it combines host and port parts of the URL into a single clause. However, when the resource is being fetched, the operation uses a hostname header, which does not include the port number. This results in stripping the port from the URL along with a char in a hostname, ultimately causing the request to fail.


The BIG-IP system returns an empty CSS resource, resulting in improper page rendering (lacking CCS) or unexpected application behavior (for JS).


Combined host and port parts of the URL.



Fix Information


Behavior Change