Bug ID 475231: TCP::close in CLIENTSSL_CLIENTCERT iRule event may result in tmm crash

Last Modified: Feb 13, 2019

Bug Tracker

Affected Product:  See more info
BIG-IP TMOS(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, 11.6.0, 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, 11.5.1 HF5, 11.4.1 HF6

Opened: Aug 11, 2014
Severity: 2-Critical
Related AskF5 Article:
K15691

Symptoms

TCP::close in CLIENTSSL_CLIENTCERT iRule event may cause tmm to crash.

Impact

Traffic disrupted while tmm restarts.

Conditions

This occurs when TCP::close is called within a CLIENTSSL_CLIENTCERT iRule event.

Workaround

Do not use TCP::close in CLIENTSSL_CLIENTCERT iRule event

Fix Information

Connection remains open after dispatching CLIENTSSL_CLIENTCERT iRule event, which prevents accessing invalid memory.

Behavior Change