Bug ID 746355: A client SSL handshake fails when client hello extension contains only unsupported groups

Last Modified: Sep 13, 2023

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

Known Affected Versions:
12.1.0, 12.1.1, 12.1.2, 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

Opened: Oct 09, 2018

Severity: 3-Major

Symptoms

If the supported groups extension in the client hello contains only groups that are not supported by the BIG-IP system, the handshake fails.

Impact

Client connections to the BIG-IP system fail.

Conditions

-- (ec)dhe ciphers are used. -- The supported groups extension does not contain any groups supported by the BIG-IP system.

Workaround

There is no workaround other than not configuring (ec)dhe ciphers.

Fix Information

None

Behavior Change

Guides & references

K10134038: F5 Bug Tracker Filter Names and Tips