Package Instance

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
An instance of a cross-site scripting vulnerability was identified to be present in the web based administration console on the message.jsp page of Apache ActiveMQ versions 5.15.12 through 5.16.0.

Code Injection
In Apache ActiveMQ, unmarshalling corrupt MQTT frame can lead to broker Out of Memory exception making it unresponsive.

False positive
This advisory has been marked as a false positive.

Apache ActiveMQ: Unchecked buffer length can cause excessive memory allocation
Memory Allocation with Excessive Size Value vulnerability in Apache ActiveMQ.

During unmarshalling of OpenWire commands the size value of buffers was not properly validated which could lead to excessive memory allocation and be exploited to cause a denial of service (DoS) by depleting process memory, thereby affecting applications and services that rely on the availability of the ActiveMQ broker when not using mutual TLS connections.
This issue affects Apache ActiveMQ: from 6.0.0 before 6.1.6, from 5.18.0 before 5.18.7, from 5.17.0 before 5.17.7, before 5.16.8. ActiveMQ 5.19.0 is not affected.

Users are recommended to upgrade to version 6.1.6+, 5.19.0+,  5.18.7+, 5.17.7, or 5.16.8 or which fixes the issue.

Existing users may implement mutual TLS to mitigate the risk on affected brokers.

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
In Apache ActiveMQ 5.x before 5.14.2, an instance of a cross-site scripting vulnerability was identified to be present in the web based administration console. The root cause of this issue is improper user data output validation.