USN-6910-1: Critical Security Flaws in Apache ActiveMQ

Apache ActiveMQ, a popular open-source message broker written in Java, recently faced multiple security vulnerabilities across various versions, notably on Ubuntu 16.04 LTS, 18.04 LTS, and 20.04 LTS. These vulnerabilities could potentially allow remote attackers to cause a denial of service (DoS), execute arbitrary code, or perform person-in-the-middle (PITM) attacks.

CVE-2015-7559: Discovered by Chess Hazlett, a flaw in the way Apache ActiveMQ handles certain commands could allow a remote attacker to terminate the program which would result in a DoS. This vulnerability specifically affected Ubuntu 16.04 LTS.

CVE-2018-11775: Recognized by Peter Stöckli, an issue was discovered in hostname verification in Apache ActiveMQ. Exploiting this flaw could enable attackers to conduct PITM attacks, this vulnerability primarily impacted Ubuntu 16.04 LTS.

CVE-2020-13920: Found by Jonathan Gallimore and Colm Ó hÉigeartaigh, this security gap in authentication processes in certain functions could also facilitate PITM attacks. This time, the affected versions included Ubuntu 16.04 LTS, Ubuntu 18.04 LTS, and Ubuntu 20.04 LTS.

CVE-2021-26117: Gregor Tudan identified that Apache ActiveMQ inaccurately managed LDAP authentication. This mismanagement could allow attackers to obtain unauthorized access, affecting Ubuntu 16.04 LTS, Ubuntu 18.04 LTS, and Ubuntu 20.04 LTS.

CVE-2022-41678 and CVE-2023-46604: Both these vulnerabilities involve security lapses where a remote attacker could potentially run arbitrary code or execute arbitrary shell commands, respectively. These are among the most severe of the disclosed vulnerabilities, posing significant risk for exploitation if left unpatched.

The disclosure of these vulnerabilities highlights the continuous need for maintaining up-to-date security practices, including regular patches and strict access controls. Users and administrators of Apache ActiveMQ are urged to apply security updates provided by Ubuntu, ensuring that they mitigate any potential threats posed by these vulnerabilities.

For further information on the latest security patches and detailed security guidance, visit LinuxPatch.