Date: Fri, 27 May 2016 16:13:30 +0100 From: Lorenz Quack <quack.lorenz@...il.com> To: users@...d.apache.org, dev@...d.apache.org, "security@...che.org" <security@...che.org>, oss-security@...ts.openwall.com, bugtraq@...urityfocus.com Subject: [CVE-2016-3094] Apache Qpid Java Broker denial of service vulnerability CVE-2016-3094: Apache Qpid Java Broker denial of service vulnerability Severity: Important Vendor: The Apache Software Foundation Versions Affected: Qpid Java Broker versions 6.0.0, 6.0.1, and 6.0.2 Description: A malformed authentication attempt may cause the broker to terminate. The Qpid Java Broker supports a number of configurable authentication providers each supporting various SASL mechanisms. Some mechanisms need (or can be configured to accept) plain-text passwords being sent to the Broker (using the SASL "PLAIN" mechanism). Where the broker has been configured to allow plain-text passwords for authentication it is possible for a client to send a malformed authentication attempt which will lead the broker to terminate due to an uncaught Exception. Brokers configured to use authentication from the "PlainPasswordFile", "SimpleLDAP", or "Base64MD5PasswordFile" providers are vulnerable if the "PLAIN" mechanism is enabled (by default "PLAIN" will be disabled on non-TLS ports, but enabled on TLS connections). Mitigation: Users should upgrade their Qpid Java Broker to version 6.0.3 or later. If this is not possible, users can disable the PLAIN mechanism for their authentication manager on versions 0.32 and later by adding "PLAIN" to the list of disabledMechanisms on their authentication provider object. Note that the SimpleLDAP authentication provider requires PLAIN and so this work around does not apply there. Credit: This issue was discovered by Alex Szczuczko of Red Hat, Inc. References: https://issues.apache.org/jira/browse/QPID-7271
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