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

Last Modified: Nov 29, 2022

Bug Tracker

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

Known Affected Versions:
15.1.0, 15.1.0.1, 15.1.0.2, 15.1.0.3, 15.1.0.4, 15.1.0.5, 15.1.1, 15.1.2, 15.1.2.1, 15.1.3, 15.1.3.1, 15.1.4, 15.1.4.1, 15.1.5, 15.1.5.1, 15.1.6, 15.1.6.1, 15.1.7, 15.1.8

Opened: Jul 28, 2022
Severity: 3-Major

Symptoms

Tmm core, clock advanced by X ticks printed

Impact

Traffic disrupted while tmm restarts.

Conditions

- 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.

Workaround

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

Fix Information

None

Behavior Change