Bug ID 1100669: Brute force captcha loop

Last Modified: Feb 07, 2024

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

Known Affected Versions:
15.1.4,, 15.1.5,, 15.1.6,, 15.1.7, 15.1.8,,,, 16.1.3,,,,,

Fixed In:
17.1.0, 16.1.4, 15.1.9

Opened: Apr 20, 2022

Severity: 3-Major


Captchas for a user that failed to login after several attempts will continue after a successful login.


If the user eventually provides the correct password, the user will be able to log in.


-- A user fails to log in after several attempts. -- The mitigation is captcha mitigation.



Fix Information

Issue with captcha loop was fixed.

Behavior Change

Guides & references

K10134038: F5 Bug Tracker Filter Names and Tips