[jboss-jira] [JBoss JIRA] (WFCORE-2615) Attribute allow-sasl-mechanisms is ignored in Elytron Authentication Configuration

[Ondrej Lukas (JIRA)]

Ondrej Lukas created WFCORE-2615:
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             Summary: Attribute allow-sasl-mechanisms is ignored in Elytron Authentication Configuration
                 Key: WFCORE-2615
                 URL: https://issues.jboss.org/browse/WFCORE-2615
             Project: WildFly Core
          Issue Type: Bug
          Components: Security
            Reporter: Ondrej Lukas
            Assignee: Darran Lofthouse
            Priority: Blocker


In case when attribute allow-sasl-mechanisms from Elytron Authentication Configuration includes some SASL mechanisms then this attribute (and mechanisms configured there) is not taken into account during choosing SASL mechanism. It means that client tries to use all of mechanisms allowed on server side even if client does not allow them. e.g. in case when server side allowed DIGEST-MD5 and JBOSS-LOCAL-USER and client side allows PLAIN, then it tries to use DIGEST-MD5 and JBOSS-LOCAL-USER mechanisms.

See log from wireshark in attachments. This is log for server configured through "Steps to Reproduce".

This happens also for using allow-sasl-mechanisms from wildfly config and also for programatically configured client.

We request blocker since this issue blocks RFE EAP7-567 and EAP7-568 and it allows to use some SASL mechanisms even if they are not allowed on client side.



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