Bug ID 466761: Heartbeat, UDP packet with only double CRLF, on existing SIP flow results in connection loss.

Last Modified: Dec 10, 2018

Bug Tracker

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

Known Affected Versions:
10.2.4, 11.2.1, 11.4.1, 11.5.1, 11.5.1 HF1, 11.5.1 HF10, 11.5.1 HF11, 11.5.1 HF2, 11.5.1 HF3, 11.5.1 HF4, 11.5.1 HF5, 11.5.1 HF6, 11.5.1 HF7, 11.5.1 HF8, 11.5.1 HF9, 11.5.2, 11.5.2 HF1, 11.6.0, 11.6.0 HF1, 11.6.0 HF2, 11.6.0 HF3, 11.6.0 HF4

Fixed In:
12.0.0, 11.6.0 HF5, 11.5.3, 11.4.1 HF6, 11.2.1 HF15, 10.2.4 HF12

Opened: Jun 11, 2014
Severity: 3-Major

Symptoms

Heartbeat, UDP packet with only double CRLF, on existing SIP flow might result in connection loss.

Impact

Connection might be terminated.

Conditions

SIP heartbeat message, a UDP packet with double CRLF, sent by the client to the server.

Workaround

None.

Fix Information

The heartbeat SIP message, which is a UDP packet with CRLF, is ignored and connection is maintained.

Behavior Change