Last Modified: Aug 19, 2026
Affected Product(s):
BIG-IP LTM
Known Affected Versions:
11.5.1, 11.5.1 hf1, 11.5.1 hf2, 11.5.1 hf3, 11.5.1 hf4, 11.5.1 hf5, 11.5.1 hf6, 11.5.1 hf7, 11.5.1 hf8, 11.5.1 hf9, 11.5.1 hf10, 11.5.1 hf11, 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, 11.6.3.1, 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
Fixed In:
12.0.0, 11.5.2
Opened: Sep 24, 2014 Severity: 4-Minor Related Article:
K51148522
If Tcl parks during HTTP::collect, and serverssl is present, data can be truncated. serverssl can send an 'early' EOF when notified by the server.
The server response is truncated.
serverssl with a server that notifies SSL of connection termination. If Tcl is parked during a HTTP::collect call, then it is possible for the EOF to be placed before the data collected. If that occurs, then the data is dropped. Use of HTTP::collect in an iRule on the server-side. If HTTP::collect is called within the HTTP_RESPONSE_DATA event, the occurrence is much more likely.
None
A response from the server is no longer truncated in some situations when the serverssl profile is combined with the use of the HTTP::collect iRule command.