The proprietary F5 TLS stack is vulnerable to ticketbleed. It exposes 31 bytes per request to the attacker and ultimately invalidates the encryption.
Security Assessment

CVSS Vector: AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Vulnerability Information
The proprietary F5 TLS stack is vulnerable to ticketbleed. It exposes 31 bytes per request to the attacker and ultimately invalidates the encryption.
Guides
Please refer to the website of the manufacturer for a guide to resolve the issue.