Bug ID 1389033: In an iRule SSL::sessionid returns an empty value

Last Modified: Jun 14, 2024

Affected Product(s):
BIG-IP Install/Upgrade, LTM(all modules)

Known Affected Versions:
15.1.9, 15.1.9.1, 15.1.10, 15.1.10.2, 15.1.10.3, 15.1.10.4, 16.1.2.2, 16.1.3, 16.1.3.1, 16.1.3.2, 16.1.3.3, 16.1.3.4, 16.1.3.5, 16.1.4, 16.1.4.1, 16.1.4.2, 16.1.4.3, 17.0.0, 17.0.0.1, 17.0.0.2, 17.1.0, 17.1.0.1, 17.1.0.2, 17.1.0.3, 17.1.1, 17.1.1.1, 17.1.1.2, 17.1.1.3

Opened: Oct 26, 2023

Severity: 3-Major

Related Article: K000137430

Symptoms

The irule SSL::sessionid command used returns an empty value after an upgrade to v15.1.9.1, when used with a TLS1.3 session. While SSL::sessionid in v15.1.8.2 returns the value specified in the ClientHello for a TLSv1.3 session, upgrading to v15.1.9.1 results in empty values returned when calling SSL::sessionid.

Impact

SSL::sessionid returns an empty value, which could result in unintended behavior for applications that use that iRule command.

Conditions

1. Use SSL::sessionid in an iRule 2. Use an affected BIG-IP version 3. Client establishes a TLS1.3 connection

Workaround

None

Fix Information

None

Behavior Change

Guides & references

K10134038: F5 Bug Tracker Filter Names and Tips