Last Modified: Apr 28, 2025
Affected Product(s):
BIG-IP PEM
Known Affected Versions:
11.6.0, 11.6.0 HF1, 11.6.0 HF2, 11.6.0 HF3, 11.6.0 HF4
Fixed In:
11.6.0 HF5
Opened: Feb 18, 2015 Severity: 3-Major
If a URL does not contain input from HTTP host header in the URL request (which is a valid HTTP 1.0 request, but not valid on HTTP 1.1), the categorization does not happen.
URL is categorized as UNKNOWN under the condition.
When PEM URLCAT is enabled, and the URL input from HTTP host header is not available, which is possible for HTTP 1.0 request.
None.
Now, when the HTTP host header is not present in the HTTP request, the PEM categorization engine still considers and processes it.