Bug ID 759370: FIX protocol messages parsed incorrectly when fragmented between the body and the trailer.

Last Modified: May 29, 2024

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

Known Affected Versions:
13.1.0.2, 13.1.0.3, 13.1.0.4, 13.1.0.5, 13.1.0.6, 13.1.0.7, 13.1.0.8, 13.1.1, 13.1.1.2, 13.1.1.3, 13.1.1.4, 13.1.1.5, 13.1.3, 13.1.3.1, 13.1.3.2, 13.1.3.3, 13.1.3.4, 13.1.3.5, 13.1.3.6, 13.1.4, 13.1.4.1, 13.1.5, 13.1.5.1, 14.1.0, 14.1.0.1, 14.1.0.2, 14.1.0.3, 14.1.0.5, 14.1.0.6, 14.1.2, 14.1.2.1, 14.1.2.2, 14.1.2.3, 14.1.2.4, 14.1.2.5, 14.1.2.6, 14.1.2.7, 14.1.2.8, 14.1.3, 14.1.3.1, 14.1.4, 14.1.4.1, 14.1.4.2, 14.1.4.3, 14.1.4.4, 14.1.4.5, 14.1.4.6, 14.1.5, 14.1.5.1, 14.1.5.2, 14.1.5.3, 14.1.5.4, 14.1.5.6

Fixed In:
15.1.0

Opened: Feb 22, 2019

Severity: 3-Major

Symptoms

FIX message has successfully parsed header part (iRule event FIX_HEADER triggered), but is eventually discarded as incomplete (no iRule event FIX_MESSAGE).

Impact

FIX protocol messages are not forwarded.

Conditions

FIX message fragmented between body part and the trailer (tag 10).

Workaround

Assure FIX protocol packet size does not exceed MTU value.

Fix Information

Message parsing improved to correctly handle fragmented packets.

Behavior Change

Guides & references

K10134038: F5 Bug Tracker Filter Names and Tips