Last Modified: Aug 30, 2025
Affected Product(s):
BIG-IP ASM
Known Affected Versions:
12.1.2, 12.1.2 HF1, 12.1.2 HF2, 12.1.3, 12.1.3.1, 12.1.3.2, 12.1.3.3, 12.1.3.4, 12.1.3.5, 12.1.3.6, 13.0.0, 13.0.0 HF1, 13.0.0 HF2, 13.0.0 HF3
Fixed In:
13.1.0, 13.0.1, 12.1.3.7
Opened: Mar 02, 2017 Severity: 3-Major Related Article:
K92201230
The TS http cookie name may intermittently contain a NULL (ASCII character number 0x00) character
False positives triggered on modified domain cookies.
This can occur intermittently when ASM is provisioned and has a unique combination of security policy name and the server's cookie attributes (path and domain).
To resolve this, change the policy security name.
Fixed an issue with the TS cookie name length.