Bug ID 667922: Alternative unicode encoding in JSON objects not being parsed correctly

Last Modified: Nov 07, 2022

Bug Tracker

Affected Product:  See more info
BIG-IP ASM(all modules)

Known Affected Versions:
12.1.0, 12.1.0 HF1, 12.1.0 HF2, 12.1.1, 12.1.1 HF1, 12.1.1 HF2, 12.1.2, 12.1.2 HF1, 12.1.2 HF2, 12.1.3,

Fixed In:

Opened: Jun 05, 2017
Severity: 3-Major
Related Article:


JSON content might be blocked when unicode encoding is used in one of the JSON nodes.


False positive blocked request.


Configured ASM Policy with JSON profile.


Disable metachars checks in JSON profile.

Fix Information

The JSON parser now handles unicode sequences correctly.

Behavior Change