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CVE-2019-14379: SubTypeValidator.java in FasterXML jackson-databind before 2.9.9.2 mishandles default typing when ehcache i...

SubTypeValidator.java in FasterXML jackson-databind before 2.9.9.2 mishandles default typing when ehcache is used (because of net.sf.ehcache.transaction.manager.DefaultTransactionManagerLookup), leading to remote code execution.

UnknownCVSS not scoredNot KEV-listedUpdated
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Glexia's TakeAutomated analysishigh

Security readout for executives and security teams

Plain-English summary

This is a remote code execution risk in older FasterXML jackson-databind when default typing is used with Ehcache present. Affected applications may let crafted data influence object creation. The bundle shows multiple downstream projects and Linux distributions shipping updates, but no KEV listing or cited active exploitation.

Executive priority

Prioritize remediation where vulnerable Jackson is reachable in production Java services. RCE impact justifies urgency, but the evidence provided does not prove active exploitation or broad unauthenticated reachability in every deployment.

Technical view

SubTypeValidator.java in jackson-databind before 2.9.9.2 mishandles default typing with net.sf.ehcache.transaction.manager.DefaultTransactionManagerLookup. The reported impact is remote code execution. Exposure depends on vulnerable jackson-databind, Ehcache availability, and application use of default typing on attacker-influenced data.

Likely exposure

Most likely in Java applications or packaged products that embed jackson-databind before 2.9.9.2 and include Ehcache. The source bundle lists no CPEs, so dependency inventory is required rather than product-name matching.

Exploitation context

The supplied sources support remote code execution potential, but do not show active exploitation. KEV is false in the bundle. Treat internet-facing JSON-processing services as higher priority when default typing and vulnerable dependencies are present.

Researcher notes

The record has limited structured metadata: no CVSS, CWE, CPEs, or complete product list. Validate exposure by dependency graph, runtime classpath, and Jackson configuration. Downstream references show dependency upgrades in Debian and Apache projects.

Mitigation direction

  • Upgrade jackson-databind to 2.9.9.2 or later.
  • Apply vendor package updates from Debian, Red Hat, Fedora, or affected upstream projects.
  • Check whether bundled applications ship vulnerable jackson-databind transitively.
  • Review vendor guidance before changing serialization settings in production.
  • Prioritize externally reachable Java services processing JSON data.

Validation and detection

  • Generate a dependency inventory for jackson-databind versions.
  • Check runtime classpaths for Ehcache presence.
  • Review code or configuration for Jackson default typing usage.
  • Confirm vendor advisories are applied for packaged products.
  • Retest application serialization paths after dependency upgrades.
Prepared
Confidence
medium
Sources
9

Public sources used

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.

Potential ATT&CK relevance

Conservative CVE-to-ATT&CK context

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ATT&CK lookup starting points

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description · low confidence lookup

Execution behavior lookup

The CVE wording references code or command execution, so execution technique review may help defensive triage. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.

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cve · low confidence lookup

CVE-2019-14379 mapping review

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Vulnerability profileCVE Program record
Severity
Unknown
CVSS
Not scored
Known Exploited
No
Published
Official CVE source material

CNA and ADP enrichment extracted from CVE v5

These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.

0CVSS vectors
0Timeline events
0ADP providers
41Source links

CVSS and timeline data

No CVSS vectors or timeline events were available in the normalized CVE source material.

Source materials

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus
n/an/an/aListed
Weakness

CWE details

No CWE listed

CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.