#VU46670 Improper Authentication in ActiveMQ - CVE-2020-13920
Published: September 10, 2020 / Updated: September 14, 2020
Vulnerability identifier: #VU46670
Vulnerability risk: Medium
CVSSv4.0: 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/E:U/U:Green
CVE-ID: CVE-2020-13920
CWE-ID: CWE-287
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerable software:
ActiveMQ
ActiveMQ
Software vendor:
Apache Foundation
Apache Foundation
Description
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.
Remediation
Install update from vendor's website.