Bug ID 1132741: Tmm core when html parser scans endless html tag of size more then 50MB

Last Modified: Dec 07, 2023

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: Jul 28, 2022

Severity: 3-Major


Tmm core, clock advanced by X ticks printed


Traffic disrupted while tmm restarts.


- Dos Application or Bot defense profile assigned to a virtual server - Single Page Application or Validate After access. - 50MB response with huge html tag length.


Exclude html parser for url in question. tmsh modify sys db dosl7.parse_html_excluded_urls value <url>

Fix Information

Break from html parser early stage for long html tags

Behavior Change

Guides & references

K10134038: F5 Bug Tracker Filter Names and Tips