Last Modified: Feb 07, 2024
Affected Product(s):
BIG-IP DNS, GTM, Link Controller
Known Affected Versions:
15.1.0, 15.1.0.1, 15.1.0.2, 15.1.0.3, 15.1.0.4, 15.1.0.5, 15.1.1, 15.1.2, 15.1.2.1, 15.1.3, 15.1.3.1, 15.1.4, 15.1.4.1, 16.0.0, 16.0.0.1, 16.0.1, 16.0.1.1, 16.0.1.2, 16.1.0, 16.1.1, 16.1.2
Fixed In:
17.0.0, 16.1.2.1, 15.1.5
Opened: Aug 11, 2020 Severity: 3-Major
GTM virtual servers have the wrong status (up when they should be down, or down when they should be up).
The system incorrectly matches the status code in a response line which is not the Status-Line. As a result, the availability status reported for a virtual server may be incorrect. This may cause the GTM system to send traffic to unsuitable resources causing application disruptions.
-- The GTM virtual servers are monitored with an HTTP or HTTPS monitor that performs HTTP status matching. -- The status code (for example, 200) being searched for in the response appears elsewhere than in the first line (for example, in a following header).
You can work around this issue by not performing HTTP status matching in your HTTP/HTTPS GTM monitors.
The HTTP status code is now correctly searched only in the first line of the response.