CVE-2016-2141

Severity: critical (CVSS 9.8 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 4.7% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2016-06-30 · updated 2026-06-17

Description

It was found that JGroups did not require necessary headers for encrypt and auth protocols from new nodes joining the cluster. An attacker could use this flaw to bypass security restrictions, and use this vulnerability to send and receive messages within the cluster, leading to information disclosure, message spoofing, or further possible attacks.

Affected products

Red Hat JBoss EAP: 5.2, 6.4, 7.0
RedHat Jgroups: before 4.0 — fixed in 4.0

How to fix

Upgrade to a fixed version: RedHat Jgroups 4.0. Check the vendor advisory for mitigations.

References

http://rhn.redhat.com/errata/RHSA-2016-1435.html
http://rhn.redhat.com/errata/RHSA-2016-1439.html
http://rhn.redhat.com/errata/RHSA-2016-2035.html
http://www.securityfocus.com/bid/91481
http://www.securitytracker.com/id/1036165
https://access.redhat.com/errata/RHSA-2016:1345
https://access.redhat.com/errata/RHSA-2016:1346
https://access.redhat.com/errata/RHSA-2016:1347
https://access.redhat.com/errata/RHSA-2016:1374
https://access.redhat.com/errata/RHSA-2016:1376
https://access.redhat.com/errata/RHSA-2016:1389
https://access.redhat.com/errata/RHSA-2016:1432

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