This security advisory describes a pam_ldap vulnerability. Clients who are referred to a different server than the server on which they were originally authenticated, with a different TLS encryption requirement, could possibly bypass the new server's TLS requirements.
Information about this advisory is available at the following location:
F5 Product Development tracked this issue as CR54024 and CR68903 and it was fixed in BIG-IP 9.1.3 and 9.2.2. For information about upgrading, refer to the BIG-IP LTM or ASM release notes.