Bug ID 532022: tmm can crash when the reply pkt to a service flow request is a DoS pkt

Last Modified: Sep 13, 2023

Affected Product(s):
BIG-IP AFM(all modules)

Known Affected Versions:
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, 11.5.2 HF1, 11.5.3 HF1, 11.5.3 HF2, 11.5.4 HF1, 11.5.4 HF2, 11.5.4 HF3, 11.5.4 HF4, 12.1.0 HF1, 12.1.0 HF2, 12.1.1 HF1, 12.1.1 HF2, 12.1.2 HF1, 12.1.2 HF2

Fixed In:
12.0.0, 11.6.0 HF6

Opened: Jul 07, 2015

Severity: 3-Major

Symptoms

tmm can crash

Impact

Traffic disrupted while tmm restarts.

Conditions

If a service flow (or any flow which does not have a listener) sends a request out and we get back a packet which needs to be counted towards a network DoS vector, it can cause the tmm to crash.

Workaround

Don't configure AFM DoS vectors.

Fix Information

A crash bug in DoS protection has been fixed.

Behavior Change

Guides & references

K10134038: F5 Bug Tracker Filter Names and Tips