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| <ul id="-path-navigation"><li><a href="/index.html">Home</a></li><li>CVE-2016-3094</li></ul> |
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| <h1 id="cve-2016-3094">CVE-2016-3094</h1> |
| |
| <h2 id="severity">Severity</h2> |
| |
| <p>Important</p> |
| |
| <h2 id="affected-components">Affected components</h2> |
| |
| <p>Broker-J</p> |
| |
| <h2 id="affected-versions">Affected versions</h2> |
| |
| <p>6.0.0, 6.0.1, and 6.0.2</p> |
| |
| <h2 id="fixed-versions">Fixed versions</h2> |
| |
| <p><a href="/releases/qpid-java-6.0.3/index.html">6.0.3</a></p> |
| |
| <h2 id="description">Description</h2> |
| |
| <p>Denial of Service.</p> |
| |
| <p>A malformed authentication attempt may cause the broker to terminate. |
| The Apache Qpid Broker-J 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.</p> |
| |
| <p>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).</p> |
| |
| <h2 id="mitigation">Mitigation</h2> |
| |
| <p>Users should upgrade their Apache Qpid Broker-J 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.</p> |
| |
| <p>Note that the SimpleLDAP authentication provider requires PLAIN and so |
| this work around does not apply there.</p> |
| |
| <h2 id="credit">Credit</h2> |
| |
| <p>This issue was discovered by Alex Szczuczko of Red Hat, Inc.</p> |
| |
| <h2 id="references">References</h2> |
| |
| <p><a href="https://issues.apache.org/jira/browse/QPID-7271">QPID-7271</a></p> |
| |
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