Bug ID 908477: Request-adapt plus request-logging causes HTTP double-chunking in an ICAP request

Last Modified: Oct 06, 2020

Bug Tracker

Affected Product:  See more info
BIG-IP LTM(all modules)

Known Affected Versions:
13.0.0, 13.0.0 HF1, 13.0.0 HF2, 13.0.0 HF3, 13.0.1, 13.1.0, 13.1.0.1, 13.1.0.2, 13.1.0.3, 13.1.0.4, 13.1.0.5, 13.1.0.6, 13.1.0.7, 13.1.0.8, 13.1.1, 13.1.1.2, 13.1.1.3, 13.1.1.4, 13.1.1.5, 13.1.3, 13.1.3.1, 13.1.3.2, 13.1.3.3, 13.1.3.4, 14.0.0, 14.0.0.1, 14.0.0.2, 14.0.0.3, 14.0.0.4, 14.0.0.5, 14.0.1, 14.0.1.1, 14.1.0, 14.1.0.1, 14.1.0.2, 14.1.0.3, 14.1.0.5, 14.1.0.6, 14.1.2, 14.1.2.1, 14.1.2.2, 14.1.2.3, 14.1.2.4, 14.1.2.5, 14.1.2.6, 14.1.2.7, 14.1.2.8, 15.0.0, 15.0.1, 15.0.1.1, 15.0.1.2, 15.0.1.3, 15.0.1.4, 15.1.0, 15.1.0.1, 15.1.0.2, 15.1.0.3, 15.1.0.4, 15.1.0.5, 16.0.0, 16.0.0.1

Opened: May 12, 2020
Severity: 3-Major

Symptoms

When an HTTP chunked request is sent to a virtual server that has both a request-adapt (e.g., for ICAP), and a request-logging profile attached, the request that is sent to the ICAP server is doubly chunked.

Impact

Data corruption in the HTTP stream.

Conditions

-- A virtual server is configured with both a request-adapt (ICAP) and request-logging profile. -- HTTP chunked requests are sent to this virtual server.

Workaround

You can use either of the following workarounds: -- Force rechunking on the HTTP profile: request-chunking rechunk -- Remove the request-logging profile (and potentially log requests) using an iRule instead.

Fix Information

None

Behavior Change