CVE-2021-26117: ActiveMQ: LDAP-Authentication does not verify passwords on servers with anonymous bind

[Gary Tully <gtully () apache org>]

Description:

The optional ActiveMQ LDAP login module can be configured to use
anonymous access to the LDAP server. In this case, for Apache ActiveMQ
Artemis prior to version 2.16.0 and Apache ActiveMQ prior to versions
5.16.1 and 5.15.14, the anonymous context is used to verify a valid
users password in error, resulting in no check on the password.


This issue is being tracked as
https://issues.apache.org/jira/browse/ARTEMIS-2895,
https://issues.apache.org/jira/browse/AMQ-8035

Credit:

Apache ActiveMQ would like to thank Gregor Tudan
<gregor.tudan () cofinpro de> for reporting this issue.