Bug ID 491518: SSL persistence can prematurely terminate TCP connection

Last Modified: Apr 10, 2019

Bug Tracker

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

Known Affected Versions:
11.4.0, 11.4.1, 11.5.0, 11.5.1, 11.5.1 HF1, 11.5.1 HF10, 11.5.1 HF11, 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, 11.5.2, 11.5.2 HF1, 11.6.0, 11.6.0 HF1, 11.6.0 HF2, 11.6.0 HF3, 11.6.0 HF4

Fixed In:
12.0.0, 11.6.0 HF5, 11.5.3

Opened: Nov 18, 2014
Severity: 3-Major
Related AskF5 Article:
K15992

Symptoms

SSL [session id] persistence might prematurely close (FIN) a TCP connection before forwarding all data.

Impact

Premature close of TCP connection and potential data loss.

Conditions

SSL persistence must be in use. A slow client side (WAN) exacerbates the issue.

Workaround

Disable SSL persistence.

Fix Information

SSL [session id] persistence no longer prematurely terminate TCP connection.

Behavior Change