Last Modified: Nov 22, 2021
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BIG-IP Install/Upgrade, TMOS
Known Affected Versions:
14.1.0, 18.104.22.168, 22.214.171.124, 126.96.36.199, 188.8.131.52
Opened: Jan 11, 2019
Related AskF5 Article: K54339562
You are unable to log into the BIG-IP system using an LDAP account. The system might log the following message in /var/log/secure: -- crit httpd: pam_ldap(httpd:account): buffer 'buffer_size' too small. Note: This message might not be logged for all occurrences of this issue.
LDAP authentication not working properly.
This occurs when the following conditions are met: -- Remote-LDAP authentication is configured. -- There is a user account with attributes longer than 255 characters in length. -- That user attempts a logon to the BIG-IP system.
Configure user accounts with attributes shorter than 255 characters.
LDAP authentication and authorization now succeeds for users under these conditions.