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CVE Record

CVE-2018-1000873: Fasterxml Jackson version Before 2.9.8 contains a CWE-20: Improper Input Validation vulnerability in Jackso...

Fasterxml Jackson version Before 2.9.8 contains a CWE-20: Improper Input Validation vulnerability in Jackson-Modules-Java8 that can result in Causes a denial-of-service (DoS). This attack appear to be exploitable via The victim deserializes malicious input, specifically very large values in the nanoseconds field of a time value. This vulnerability appears to have been fixed in 2.9.8.

UnknownCVSS not scoredNot KEV-listedUpdated
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Glexia's TakeAutomated analysismoderate

Security readout for executives and security teams

Plain-English summary

This is a denial-of-service issue in FasterXML Jackson Modules Java 8 before 2.9.8. If an application deserializes hostile input containing an extremely large nanoseconds field in a time value, processing can fail or consume resources. The source bundle says it was fixed in 2.9.8.

Executive priority

Treat as a targeted dependency remediation item, not an emergency unless exposed services parse untrusted date/time input and cannot be upgraded quickly. Business risk is service disruption rather than data theft based on provided sources.

Technical view

The CVE describes improper input validation in Jackson-Modules-Java8 before 2.9.8. The trigger is deserialization of malicious time input with very large nanosecond values. The stated impact is DoS. No CVSS vector, severity score, or complete affected product list is provided in the bundle.

Likely exposure

Most relevant to Java services using Jackson Modules Java 8 before 2.9.8, especially where JSON or serialized input reaches Java 8 date/time deserializers from untrusted users, APIs, queues, or partner systems.

Exploitation context

The bundle does not cite active exploitation, and KEV is false. Exploitability is described as requiring the victim to deserialize malicious input. Public references include dependency-scan and vendor advisories, suggesting supply-chain exposure through bundled Jackson dependencies.

Researcher notes

Evidence is limited: the bundle provides impact, version boundary, trigger class, and fix version, but no CVSS details or proof of active exploitation. Avoid broad product claims beyond Jackson Modules Java 8 and referenced downstream advisories.

Mitigation direction

  • Upgrade Jackson Modules Java 8 to 2.9.8 or later where applicable.
  • Inventory transitive Jackson dependencies in Java applications and vendor products.
  • Check vendor advisories for fixed downstream product versions.
  • Restrict untrusted deserialization paths where business logic permits.
  • Prioritize internet-facing APIs that parse date/time JSON fields.

Validation and detection

  • Confirm whether jackson-modules-java8 versions before 2.9.8 are present.
  • Review SBOMs, dependency locks, and shaded JAR contents.
  • Identify routes or consumers that deserialize external date/time values.
  • Check vendor appliances and packaged software against advisory references.
  • Verify remediation by rescanning dependencies after upgrade.
Prepared
Confidence
medium
Sources
8

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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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
15Source 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

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