Bug ID 1069501: ASM may not match certain signatures

Last Modified: May 29, 2024

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

Fixed In:
17.0.0,,, 14.1.5

Opened: Dec 21, 2021

Severity: 2-Critical

Related Article: K22251611


Under certain condition, ASM may not match signatures as expected.


Signatures not matched as expected.


- base64 violations not configured for blocking


Illegal base64 value violation should be set to blocking. This way if Base64 decoding fails the requests gets blocked.

Fix Information

ASM now processes signature as expected.

Behavior Change

Guides & references

K10134038: F5 Bug Tracker Filter Names and Tips