CVE-2019-3834

Severity: high (CVSS 7.3 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 1.0% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2019-10-03 · updated 2026-06-17
Weakness: CWE-470

Description

It was found that the fix for CVE-2014-0114 had been reverted in JBoss Operations Network 3 (JON). This flaw allows attackers to manipulate ClassLoader properties on a vulnerable server. Exploits that have been published rely on ClassLoader properties that are exposed such as those in JON 3. Additional information can be found in the Red Hat Knowledgebase article: https://access.redhat.com/site/solutions/869353. Note that while multiple products released patches for the original CVE-2014-0114 flaw, the reversion described by this CVE-2019-3834 flaw only occurred in JON 3.

Affected products

Red Hat JBoss: from 3.2.1 (excl.) before 3.3.11 — fixed in 3.3.11

How to fix

Upgrade to a fixed version: Red Hat JBoss 3.3.11. Check the vendor advisory for mitigations.

References

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