Date: Thu, 10 Sep 2020 11:45:14 +0200 From: Jean-Baptiste Onofre <jb@...thrax.net> To: oss-security@...ts.openwall.com Subject: [CVE-2020-11998] Apache ActiveMQ JMX remote client could execute arbitrary code CVE-2020-11998: Apache ActiveMQ JMX remote client could execute arbitrary code Severity: Moderate Vendor: The Apache Software Foundation Affected Version: only Apache ActiveMQ 5.15.12 Vulnerability details: A regression has been introduced in the commit preventing JMX re-bind. By passing an empty environment map to RMIConnectorServer, instead of the map that contains he authentication credentials, it leaves ActiveMQ open to the following attack: https://docs.oracle.com/javase/8/docs/technotes/guides/management/agent.html "A remote client could create a javax.management.loading.MLet MBean and use it to create new MBeans from arbitrary URLs, at least if there is no security manager. In other words, a rogue remote client could make your Java application execute arbitrary code." Mitigation: Upgrade to Apache ActiveMQ 5.15.13 Credit: Jonathan Gallimore & Colm O hEigeartaigh
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