Bug ID 1156889: TMM 'DoS Layer 7' memory leak during Bot Defense redirect actions

Last Modified: Mar 30, 2024

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

Known Affected Versions:
15.1.5,, 15.1.6,, 15.1.7, 15.1.8,,

Fixed In:
17.1.1, 16.1.4, 15.1.9

Opened: Sep 21, 2022

Severity: 3-Major


When using bot-defense profile with a browser verification and performing redirect actions, there is a memory leak in TMM.


Degraded performance, potential eventual out-of-memory.


- The bot-defense profile with "Verify After Access" or "Verify Before Access" browser verification is configured. - Surfing using a browser, during grace period (5 Minutes after config change) to a non-qualified URL, or configuring "Validate Upon Request" in "Cross Domain Requests" configuration, and configuring A and B as "Related Site Domains". - Surfing using a browser from Domain A to Domain B.



Fix Information


Behavior Change

Guides & references

K10134038: F5 Bug Tracker Filter Names and Tips