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CVE Record

CVE-2018-12023: An issue was discovered in FasterXML jackson-databind prior to 2.7.9.4, 2.8.11.2, and 2.9.6.

An issue was discovered in FasterXML jackson-databind prior to 2.7.9.4, 2.8.11.2, and 2.9.6. When Default Typing is enabled (either globally or for a specific property), the service has the Oracle JDBC jar in the classpath, and an attacker can provide an LDAP service to access, it is possible to make the service execute a malicious payload.

UnknownCVSS not scoredNot KEV-listedUpdated
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Glexia's TakeAutomated analysishigh

Security readout for executives and security teams

Plain-English summary

This flaw affects jackson-databind, a common Java JSON library. Under specific conditions, an attacker-controlled input path could cause a Java service to run malicious code. Risk is highest for Java applications using vulnerable jackson-databind versions, enabling Default Typing, and carrying Oracle JDBC on the classpath.

Executive priority

Prioritize review for internet-facing or partner-facing Java services handling untrusted data. The issue can lead to code execution, but only under specific configuration and dependency conditions. Treat as high priority where those conditions exist.

Technical view

CVE-2018-12023 is a jackson-databind deserialization issue before 2.7.9.4, 2.8.11.2, and 2.9.6. If Default Typing is enabled and Oracle JDBC is present, attacker-supplied data can reference an LDAP service and trigger malicious payload execution. Public sources do not provide CVSS or CWE details.

Likely exposure

Exposure is conditional, not universal. Look for Java services using jackson-databind below the fixed versions, Default Typing enabled globally or per property, Oracle JDBC available in the runtime classpath, and untrusted input reaching deserialization.

Exploitation context

The CVE describes possible malicious payload execution when the attacker can influence deserialized data and provide an LDAP service the application can access. CISA KEV is false in the provided bundle, so active exploitation is not established here.

Researcher notes

The record’s affected product fields are not specific, and severity data is absent. The key triage factors are vulnerable jackson-databind version, Default Typing, Oracle JDBC presence, attacker-controlled deserialization input, and LDAP reachability. Do not assume exposure from library presence alone.

Mitigation direction

  • Upgrade jackson-databind to 2.7.9.4, 2.8.11.2, 2.9.6, or later supported releases.
  • Apply relevant vendor package updates from Red Hat, Debian, or your product supplier.
  • Disable Default Typing where it is not required.
  • Remove Oracle JDBC from classpaths where it is unnecessary.
  • Restrict outbound LDAP access from application runtimes where business requirements allow.

Validation and detection

  • Inventory applications and packaged products using jackson-databind.
  • Confirm jackson-databind versions against the fixed version thresholds.
  • Review application configuration for Default Typing usage.
  • Check runtime classpaths for Oracle JDBC libraries.
  • Identify untrusted JSON or object data reaching jackson deserialization.
  • Verify applicable vendor advisories are installed.
Prepared
Confidence
medium
Sources
6

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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CVE-2018-12023 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
37Source 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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