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CVE-2016-8741

Severity

Moderate

Affected components

Qpid Broker for Java

Affected versions

6.0.1, 6.0.2, 6.0.3, 6.0.4, 6.0.5, and 6.1.0

Fixed versions

6.0.6, 6.1.1

Description

Information Leakage.

The Qpid Broker for Java can be configured to use different so called AuthenticationProviders to handle user authentication. Among the choices are the SCRAM-SHA-1 and SCRAM-SHA-256 AuthenticationProvider types.

It was discovered that these AuthenticationProviders prematurely terminate the SCRAM SASL negotiation if the provided user name does not exist thus allowing remote attacker to determine the existence of user accounts.

The Vulnerability does not apply to AuthenticationProviders other than SCRAM-SHA-1 and SCRAM-SHA-256.

Mitigation

Users should upgrade the Qpid Broker for Java to version 6.0.6, 6.1.1, or later (recommended).

If upgrading is not possible, the vulnerability can be mitigated by using an AuthenticationProvider other than SCRAM-SHA-1 and SCRAM-SHA-256.

References

QPID-7599