Authentication bypass in Apache ActiveMQ and ActiveMQ Artemis

1) Improper Authentication

EUVDB-ID: #VU50072

Risk: High

CVSSv4.0: 8 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N/E:U/U:Amber]

CVE-ID: CVE-2021-26117

CWE-ID: CWE-287 - Improper Authentication

Exploit availability: No

Description

The vulnerability allows a remote attacker to bypass authentication process.

The vulnerability exists due to a logic error in ActiveMQ LDAP login module when configured to to use anonymous access to the LDAP server. A remote attacker can provide a valid username and no password and gain unauthorized access to the system.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

ActiveMQ: 5.15.0 - 5.16.0

ActiveMQ Artemis: 1.0.0 - 2.15.0

CPE2.3

• cpe:2.3:a:apache_foundation:activemq:5.16.0:*:*:*:*:*:*:*
• cpe:2.3:a:apache_foundation:activemq_artemis:1.0.0:*:*:*:*:*:*:*
• cpe:2.3:a:apache_foundation:activemq_artemis:1.1.0:*:*:*:*:*:*:*
• cpe:2.3:a:apache_foundation:activemq_artemis:1.2.0:*:*:*:*:*:*:*

External links

https://mail-archives.apache.org/mod_mbox/activemq-users/202101.mbox/%3cCAH+vQmMeUEiKN4wYX9nLBbqmFZFPXqajNvBKmzb2V8QZANcSTA@mail.gmail.com%3e
https://issues.apache.org/jira/browse/AMQ-8035
https://issues.apache.org/jira/browse/ARTEMIS-2895

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

How the attacker can exploit this vulnerability?

The attacker would have to send a specially crafted request to the affected application in order to exploit this vulnerability.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.