Bug ID 741108: tmm dosl7 memory leak when X-Forwared-For header value contains a long list of comma separated ip addresses

Last Modified: Mar 21, 2019

Bug Tracker

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

Known Affected Versions:
12.1.0, 12.1.0 HF1, 12.1.0 HF2, 12.1.1, 12.1.1 HF1, 12.1.1 HF2, 12.1.2, 12.1.2 HF1, 12.1.2 HF2, 12.1.3, 12.1.3.1, 12.1.3.2, 12.1.3.3, 12.1.3.4, 12.1.3.5, 12.1.3.6, 12.1.3.7, 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, 13.1.1.1, 13.1.1.2, 13.1.1.3, 13.1.1.4, 14.0.0, 14.0.0.1, 14.0.0.2, 14.0.0.3, 14.0.0.4, 14.1.0, 14.1.0.1, 14.1.0.2, 14.1.0.3

Fixed In:
12.1.4

Opened: Aug 20, 2018
Severity: 2-Critical

Symptoms

tmm memory leak can lead to tmm out-of-memory state.

Impact

Unexpected tmm out-of-memory state can be reached, causing sweeper activity and disrupting traffic.

Conditions

-- ASM provisioned. -- ASM policy attached on a virtual server. -- ASM policy has device ID enabled. -- HTTP profile accept_xff enabled.

Workaround

Disable accept_xff in HTTP profile that is assigned to a virtual server along with ASM policy.

Fix Information

The leak is now fixed.

Behavior Change