Bug ID 643733: ssldump crashes when processing out-of-order packet

Last Modified: Nov 20, 2025

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

Known Affected Versions:
11.6.1, 11.6.1 HF1, 11.6.1 HF2, 11.6.2, 11.6.2 HF1, 11.6.3, 11.6.3.1, 11.6.3.2, 11.6.3.3, 11.6.3.4, 11.6.4, 11.6.5, 11.6.5.1, 11.6.5.2, 11.6.5.3, 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, 12.1.3.1, 12.1.3.2, 12.1.3.3, 12.1.3.4, 12.1.3.5, 12.1.3.6, 12.1.3.7, 12.1.4, 12.1.4.1, 12.1.5, 12.1.5.1, 12.1.5.2, 12.1.5.3, 12.1.6, 13.0.0, 13.0.0 HF1, 13.0.0 HF2, 13.0.0 HF3, 13.0.1

Fixed In:
13.1.0

Opened: Feb 08, 2017

Severity: 3-Major

Symptoms

ssldump crashes when processing packet capture.

Impact

This should be a rare case. If crash happens, it makes traffic analysis more difficult.

Conditions

Packet capture contains out-of-order SSLv2 client handshake hello message; i.e. client hello packet comes after server hello packet.

Workaround

Wireshark provides similar functionality.

Fix Information

Fix crash; enable processing of out-of-order SSLv2 hello message.

Behavior Change

Guides & references

K10134038: F5 Bug Tracker Filter Names and Tips