Bug ID 716788: TMM may crash while response modifications are being performed within DoSL7 filter

Last Modified: Sep 13, 2023

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

Known Affected Versions:
12.0.0, 12.0.0 HF1, 12.1.0 HF1, 12.0.0 HF2, 12.1.0 HF2, 12.0.0 HF3, 12.0.0 HF4, 12.1.1 HF1, 12.1.1 HF2, 12.1.2 HF1, 12.1.2 HF2, 12.1.0, 12.1.1, 12.1.2, 12.1.3,,,,,,, 13.0.0, 13.0.0 HF1, 13.0.0 HF2, 13.0.0 HF3, 13.0.1, 13.1.0,,,,,,,, 14.0.0,,,,

Fixed In:

Opened: Apr 25, 2018

Severity: 2-Critical


TMM might crash when a response is modified by the DoSL7 filter while injecting an HTML response from a backend server.


Traffic disrupted while tmm restarts, failover may occur.


-- ASM provisioned. -- DoS application profile is attached to a virtual server.


There is no workaround other than to remove the DoS application profile from the virtual server.

Fix Information

Response modification handler has been modified so that this issue no longer occurs.

Behavior Change

Guides & references

K10134038: F5 Bug Tracker Filter Names and Tips