CVE-2018-11775

Severity: high (CVSS 7.4 v3.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 7.0% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2018-09-10 · updated 2026-06-17
Weakness: CWE-295

Description

TLS hostname verification when using the Apache ActiveMQ Client before 5.15.6 was missing which could make the client vulnerable to a MITM attack between a Java application using the ActiveMQ client and the ActiveMQ server. This is now enabled by default.

Affected products

Apache ActiveMQ: before 5.15.6 — fixed in 5.15.6
Oracle Corporation Enterprise Repository: 12.1.3.0.0
Oracle Corporation FLEXCUBE Private Banking: 2.0.0.0, 2.2.0.1, 12.0.1.0, 12.0.3.0, 12.1.0.0

How to fix

Upgrade to a fixed version: Apache ActiveMQ 5.15.6. Check the vendor advisory for mitigations.

References

http://activemq.apache.org/security-advisories.data/CVE-2018-11775-announcement.txt
http://www.securityfocus.com/bid/105335
http://www.securitytracker.com/id/1041618
https://access.redhat.com/errata/RHSA-2019:3892
https://lists.apache.org/thread.html/03f91b1fb85686a848cee6b90112cf6059bd1b21b23bacaa11a962e1%40%3Cdev.activemq.apache.org%3E
https://lists.apache.org/thread.html/2b5c0039197a4949f29e1e2c9441ab38d242946b966f61c110808bcc%40%3Ccommits.activemq.apache.org%3E
https://lists.apache.org/thread.html/a859563f05fbe7c31916b3178c2697165bd9bbf5a65d1cf62aef27d2%40%3Ccommits.activemq.apache.org%3E
https://lists.apache.org/thread.html/fcbe6ad00f1de142148c20d813fae3765dc4274955e3e2f3ca19ff7b%40%3Cdev.activemq.apache.org%3E
https://lists.apache.org/thread.html/rb698ed085f79e56146ca24ab359c9ef95846618675ea1ef402e04a6d%40%3Ccommits.activemq.apache.org%3E
https://lists.debian.org/debian-lts-announce/2021/03/msg00005.html
https://www.oracle.com/security-alerts/cpuapr2020.html
https://www.oracle.com/security-alerts/cpujan2021.html

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