Bug ID 815877: Information Elements with zero-length value are rejected by the GTP parser

Last Modified: Sep 13, 2023

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

Fixed In:
16.0.0, 15.1.0.5, 15.0.1.4, 14.1.2.5, 13.1.3.5, 12.1.5.2, 11.6.5.3

Opened: Aug 19, 2019

Severity: 3-Major

Symptoms

When processing a GTP message containing zero-length IEs (which are allowed by the 3GPP Technical Specification), the message might get rejected.

Impact

Well-formed GTP messages might get rejected.

Conditions

Virtual server with GTP profile enabled processing GTP traffic.

Workaround

Avoid sending GTP messages containing zero-length IEs.

Fix Information

Zero-length IEs are now processed correctly.

Behavior Change

Guides & references

K10134038: F5 Bug Tracker Filter Names and Tips