Bug ID 505964: Invalid http cookie handling can lead to TMM core

Last Modified: Jun 30, 2021

Bug Tracker

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

Known Affected Versions:
11.2.1, 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, 11.5.10, 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:
11.6.0 HF5, 11.5.3, 11.4.1 HF9

Opened: Feb 10, 2015
Severity: 3-Major
Related AskF5 Article:


If an http cookie is invalid, then subsequent modifications to http cookie entries can result in a TMM core.


Traffic disrupted while tmm restarts.


This issue can occur with an HTTP virtual server that performs cookie processing (either via an iRule, profile configuration, or as a result of persistence) and also performs header manipulation.



Fix Information

A crash in the HTTP profile implementation of cookie handling has been fixed.

Behavior Change