Bug ID 759839: Datasafe encrypts stored substitute value for xhr request and not the real value

Last Modified: Sep 14, 2023

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

Known Affected Versions:
13.1.0,,,,,,,,, 13.1.1,,,,, 13.1.3,,,,,,, 13.1.4,, 13.1.5,, 14.0.0,,,,,, 14.0.1,, 14.1.0,,,,,, 14.1.2,,,,,,,,, 14.1.3,, 14.1.4,,,,,,, 14.1.5,,,,,, 15.0.0, 15.0.1,,,,

Fixed In:

Opened: Feb 27, 2019

Severity: 3-Major


FPS end Users report they are unable to log in to an application.


Client logins fail.


-- Datasafe enabled. -- A parameter is set to be encrypted in the settings. -- The page contains a custom encryption function which manipulates the value before sending it.


Disable Substitute value.

Fix Information

Added the ability to encrypt [CUSTOM_FUNC](real field), so this issue no longer occurs.

Behavior Change

Guides & references

K10134038: F5 Bug Tracker Filter Names and Tips