Improper Authentication in ActiveMQ - CVE-2020-13920
Published: September 10, 2020 / Updated: September 14, 2020
Vulnerability identifier: #VU46670
CSH Severity: Medium
CVSS v4: 8.2 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2020-13920
CWE-ID: CWE-287
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote non-authenticated attacker to gain access to sensitive information.
Apache ActiveMQ uses LocateRegistry.createRegistry() to create the JMX RMI registry and binds the server to the "jmxrmi" entry. It is possible to connect to the registry without authentication and call the rebind method to rebind jmxrmi to something else. If an attacker creates another server to proxy the original, and bound that, he effectively becomes a man in the middle and is able to intercept the credentials when an user connects.
Affected software
ActiveMQ
Dell Support Assist Enterprise
Ubuntu
activemq (Ubuntu package)
libactivemq-java (Ubuntu package)
Dell Support Assist Enterprise
Ubuntu
activemq (Ubuntu package)
libactivemq-java (Ubuntu package)
How to mitigate CVE-2020-13920
Install update from vendor's website.
ActiveMQ - update to 5.15.12
Dell Support Assist Enterprise - update to 4.00.06.00
activemq (Ubuntu package) - update to Ubuntu Pro
libactivemq-java (Ubuntu package) - update to Ubuntu Pro
Dell Support Assist Enterprise - update to 4.00.06.00
activemq (Ubuntu package) - update to Ubuntu Pro
libactivemq-java (Ubuntu package) - update to Ubuntu Pro