CVE-2021-3396: OpenNMS Horizon RCE via JEXL2 expression

CVE-2021-3396 · Severity: low · CVSS 3.1 · Published 2022-05-24

OpenNMS Horizon RCE via JEXL2 expression

Technologies: org.opennms:opennms (Maven). Vendors: Maven.

Quick answers

Is CVE-2021-3396 exploited in the wild?
No. Junglewise Threat Intelligence has no report of CVE-2021-3396 being exploited in the wild.
How severe is CVE-2021-3396?
Low severity, with a CVSS score of 3.1, published 24 May 2022.
Which products and versions are affected?
org.opennms:opennms (Maven) ECOSYSTEM:introduced=16.0.0,fixed=27.0.4; org.opennms:opennms-provision (Maven) ECOSYSTEM:introduced=16.0.0,fixed=27.0.4; org.opennms:opennms-util (Maven) ECOSYSTEM:introduced=16.0.0,fixed=27.0.4; org.opennms.features:org.opennms.features.measurements (Maven) ECOSYSTEM:introduced=16.0.0,fixed=27.0.4.
Is there a fix for CVE-2021-3396?
Yes. org.opennms:opennms (Maven): upgrade to 27.0.4 or later; org.opennms:opennms-provision (Maven): upgrade to 27.0.4 or later; org.opennms:opennms-util (Maven): upgrade to 27.0.4 or later; org.opennms.features:org.opennms.features.measurements (Maven): upgrade to 27.0.4 or later. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
Am I affected by CVE-2021-3396?
Check whether you run org.opennms:opennms (Maven), org.opennms:opennms-provision (Maven), org.opennms:opennms-util (Maven) or one of the others listed at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

How to fix

  • org.opennms:opennms (Maven): upgrade to 27.0.4 or later
    # set org.opennms:opennms to 27.0.4 in your pom.xml or build.gradle
  • org.opennms:opennms-provision (Maven): upgrade to 27.0.4 or later
    # set org.opennms:opennms-provision to 27.0.4 in your pom.xml or build.gradle
  • org.opennms:opennms-util (Maven): upgrade to 27.0.4 or later
    # set org.opennms:opennms-util to 27.0.4 in your pom.xml or build.gradle
  • org.opennms.features:org.opennms.features.measurements (Maven): upgrade to 27.0.4 or later
    # set org.opennms.features:org.opennms.features.measurements to 27.0.4 in your pom.xml or build.gradle

Affected products

  • org.opennms:opennms (Maven) ECOSYSTEM:introduced=16.0.0,fixed=27.0.4
  • org.opennms:opennms-provision (Maven) ECOSYSTEM:introduced=16.0.0,fixed=27.0.4
  • org.opennms:opennms-util (Maven) ECOSYSTEM:introduced=16.0.0,fixed=27.0.4
  • org.opennms.features:org.opennms.features.measurements (Maven) ECOSYSTEM:introduced=16.0.0,fixed=27.0.4

Identifiers

  • CVE-2021-3396
  • GHSA-c3mp-9vx3-2rvv

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