Bug ID 569195: A Set-Cookie for an existing ASM cookie without value change

Last Modified: Sep 13, 2023

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

Known Affected Versions:
12.1.0, 12.1.1, 12.1.2, 12.1.3,,,,,,,

Fixed In:
13.0.0, 12.1.4

Opened: Jan 21, 2016

Severity: 3-Major

Related Article: K41874435


A Set-Cookie command appears for an ASM cookie (TS cookie) where the value has not changed and the set-cookie command is not needed.


The unneeded cookie may disturb caching and cause additional unnecessary bandwidth consumption.


-- The policy building is automatic or manual mode. -- Additional features may also cause TS cookie setting, but usually these will also include cookie changes.


If possible, turn off the policy builder.

Fix Information

Unneeded set cookie for an ASM cookie is not issued.

Behavior Change

Guides & references

K10134038: F5 Bug Tracker Filter Names and Tips