CVE-2019-12086: Jackson databind Information Exposure Vulnerability

HIGH
Advisory Identifier: GHSA-5ww9-j83m-q7qx
Share
CVSS 7.5
CWE-502
Published
Advisory Summary

CVE-2019-12086 is a HIGH (CVSS 7.5) information exposure vulnerability (CWE-502: Deserialization of Untrusted Data) affecting Jackson databind libraries in the Maven ecosystem. The issue involves information exposure in fasterxml jackson-databind. Remediation is available by upgrading affected packages to version 2.9.9, 2.8.11.4, 2.7.9.6, 2.6.7.3.

CVE-2019-12086 at a Glance

CVE Identifier CVE-2019-12086
GHSA Identifier GHSA-5ww9-j83m-q7qx
Severity HIGH
CVSS v3.1 Base Score 7.5
CWE Classification CWE-502: Deserialization of Untrusted Data
Affected Product Jackson databind
Package Ecosystem Maven
Published Date
Last Updated

Security Impact

CVSS: 7.5

The security impact metrics below are parsed directly from the CVSS v3.1 vector string (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N).

Attack Vector Network (AV:N)
Attack Complexity Low (AC:L)
Privileges Required None (PR:N)
User Interaction None (UI:N)
Scope Unchanged (S:U)
Confidentiality High (C:H)
Integrity None (I:N)
Availability None (A:N)

How to Fix CVE-2019-12086

To remediate this vulnerability, upgrade all affected Jackson databind dependencies to a patched release. Both direct and transitive dependencies should be checked, as frameworks or security libraries may pull in vulnerable versions transitively.

com.fasterxml.jackson.core:jackson-databind fixed: 2.9.9 
<dependency>
    <groupId>com.fasterxml.jackson.core</groupId>
    <artifactId>jackson-databind</artifactId>
    <version>2.9.9</version>
</dependency>
com.fasterxml.jackson.core:jackson-databind fixed: 2.8.11.4 
<dependency>
    <groupId>com.fasterxml.jackson.core</groupId>
    <artifactId>jackson-databind</artifactId>
    <version>2.8.11.4</version>
</dependency>
com.fasterxml.jackson.core:jackson-databind fixed: 2.7.9.6 
<dependency>
    <groupId>com.fasterxml.jackson.core</groupId>
    <artifactId>jackson-databind</artifactId>
    <version>2.7.9.6</version>
</dependency>
com.fasterxml.jackson.core:jackson-databind fixed: 2.6.7.3 
<dependency>
    <groupId>com.fasterxml.jackson.core</groupId>
    <artifactId>jackson-databind</artifactId>
    <version>2.6.7.3</version>
</dependency>
Verify Direct and Transitive Dependencies

Run the following command in your project directory to verify that all resolved dependencies use the patched release: 

mvn dependency:tree -Dincludes=com.fasterxml.jackson.core

How to Check if You Are Affected

To determine whether your Java application is affected by CVE-2019-12086, inspect your build dependencies using the Maven Dependency Plugin:

mvn dependency:tree -Dincludes=com.fasterxml.jackson.core

Analyze the terminal output to locate any version of Jackson databind in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 2.9.9), your application is affected.

Note: The mvn dependency:tree -Dincludes=com.fasterxml.jackson.core command inspects the resolved dependency graph declared in your project's POM files; it does not perform automated security scanning or inspect runtime dynamic classpaths. Always verify runtime container classpaths and shaded JARs.

Technical Details

Vulnerability Mechanism & Technical Analysis

This vulnerability is classified under CWE-502: Deserialization of Untrusted Data, where the product deserializes untrusted data without sufficiently ensuring that the resulting data will be valid. In Jackson databind, software state validation or input boundaries are circumvented during processing. Review the official source advisory statement below for specific affected components, classes, and reproduction details.

Source Advisory Statement

A Polymorphic Typing issue was discovered in FasterXML jackson-databind 2.x before 2.9.9. When Default Typing is enabled (either globally or for a specific property) for an externally exposed JSON endpoint, the service has the mysql-connector-java jar (8.0.14 or earlier) in the classpath, and an attacker can host a crafted MySQL server reachable by the victim, an attacker can send a crafted JSON message that allows them to read arbitrary local files on the server. This occurs because of missing com.mysql.cj.jdbc.admin.MiniAdmin validation.

CVE-2019-12086 Affected Jackson databind Versions

4 component(s)
Fixed Versions:
2.9.92.8.11.42.7.9.62.6.7.3
Product / Package Ecosystem Affected Versions Fixed Version
com.fasterxml.jackson.core:jackson-databind
maven/com.fasterxml.jackson.core/jackson-databind
Maven
≥ 2.9.0
< 2.9.9
2.9.9
com.fasterxml.jackson.core:jackson-databind
maven/com.fasterxml.jackson.core/jackson-databind
Maven
≥ 2.8.0
< 2.8.11.4
2.8.11.4
com.fasterxml.jackson.core:jackson-databind
maven/com.fasterxml.jackson.core/jackson-databind
Maven
≥ 2.7.0
< 2.7.9.6
2.7.9.6
com.fasterxml.jackson.core:jackson-databind
maven/com.fasterxml.jackson.core/jackson-databind
Maven
≥ 2.0.0
< 2.6.7.3
2.6.7.3

References

NVD — CVE-2019-12086 NVD
https://nvd.nist.gov/vuln/detail/CVE-2019-12086
Jackson databind Source Repository REPOSITORY
https://github.com/FasterXML/jackson-databind/issues/2326
Security Fix Commit FIX COMMIT
https://github.com/FasterXML/jackson-databind/commit/efc3c0d02f4743dbaa6d1b9c466772a2f13d966b
Security Fix Commit FIX COMMIT
https://github.com/FasterXML/jackson-databind/commit/dda513bd7251b4f32b7b60b1c13740e3b5a43024
Security Fix Commit FIX COMMIT
https://github.com/FasterXML/jackson-databind/commit/d30f036208ab1c60bd5ce429cb4f7f1a3e5682e8
lists.apache.org/thread.html/rca3793... WEB
https://lists.apache.org/thread.html/rca37935d661f4689cb4119f1b3b224413b22be161b678e6e6ce0c69b@%3Ccommits.nifi.apache.org%3E
lists.debian.org/debian-lts-announce... WEB
https://lists.debian.org/debian-lts-announce/2019/05/msg00030.html
lists.apache.org/thread.html/rda9959... WEB
https://lists.apache.org/thread.html/rda99599896c3667f2cc9e9d34c7b6ef5d2bbed1f4801e1d75a2b0679@%3Ccommits.nifi.apache.org%3E
lists.fedoraproject.org/archives/list/packa... WEB
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/OVRZDN2T6AZ6DJCZJ3VSIQIVHBVMVWBL
lists.fedoraproject.org/archives/list/packa... WEB
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/TXRVXNRFHJSQWFHPRJQRI5UPMZ63B544
lists.fedoraproject.org/archives/list/packa... WEB
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/UKUALE2TUCKEKOHE2D342PQXN4MWCSLC
medium.com/@cowtowncoder/on-ja... WEB
https://medium.com/@cowtowncoder/on-jackson-cves-dont-panic-here-is-what-you-need-to-know-54cd0d6e8062
seclists.org/bugtraq/2019/may/68 WEB
https://seclists.org/bugtraq/2019/May/68
Jackson databind Security Information SECURITY
https://security.netapp.com/advisory/ntap-20190530-0003
Jackson databind Security Information SECURITY
https://web.archive.org/web/20200227030031/http://www.securityfocus.com/bid/109227
Jackson databind Security Information SECURITY
https://web.archive.org/web/20200808181049/http://russiansecurity.expert/2016/04/20/mysql-connect-file-read
Jackson databind Security Information SECURITY
https://www.debian.org/security/2019/dsa-4452
Jackson databind Security Information SECURITY
https://www.oracle.com/security-alerts/cpuApr2021.html
Jackson databind Security Information SECURITY
https://www.oracle.com/security-alerts/cpuapr2020.html
Jackson databind Security Information SECURITY
https://www.oracle.com/security-alerts/cpuapr2022.html
Jackson databind Security Information SECURITY
https://www.oracle.com/security-alerts/cpujan2020.html
Jackson databind Security Information SECURITY
https://www.oracle.com/security-alerts/cpujul2020.html
Jackson databind Security Information SECURITY
https://www.oracle.com/security-alerts/cpuoct2020.html
Jackson databind Security Information SECURITY
https://www.oracle.com/technetwork/security-advisory/cpujul2019-5072835.html
Jackson databind Security Information SECURITY
https://www.oracle.com/technetwork/security-advisory/cpuoct2019-5072832.html
access.redhat.com/errata/rhsa-2019:28... WEB
https://access.redhat.com/errata/RHSA-2019:2858
access.redhat.com/errata/rhsa-2019:29... WEB
https://access.redhat.com/errata/RHSA-2019:2935
access.redhat.com/errata/rhsa-2019:29... WEB
https://access.redhat.com/errata/RHSA-2019:2936
access.redhat.com/errata/rhsa-2019:29... WEB
https://access.redhat.com/errata/RHSA-2019:2937
access.redhat.com/errata/rhsa-2019:29... WEB
https://access.redhat.com/errata/RHSA-2019:2938
access.redhat.com/errata/rhsa-2019:29... WEB
https://access.redhat.com/errata/RHSA-2019:2998
access.redhat.com/errata/rhsa-2019:30... WEB
https://access.redhat.com/errata/RHSA-2019:3044
access.redhat.com/errata/rhsa-2019:30... WEB
https://access.redhat.com/errata/RHSA-2019:3045
access.redhat.com/errata/rhsa-2019:30... WEB
https://access.redhat.com/errata/RHSA-2019:3046
access.redhat.com/errata/rhsa-2019:30... WEB
https://access.redhat.com/errata/RHSA-2019:3050
access.redhat.com/errata/rhsa-2019:31... WEB
https://access.redhat.com/errata/RHSA-2019:3149
access.redhat.com/errata/rhsa-2019:32... WEB
https://access.redhat.com/errata/RHSA-2019:3200
Jackson databind Source Repository REPOSITORY
https://github.com/FasterXML/jackson-databind
GitHub Advisory / Wiki ADVISORY
https://github.com/FasterXML/jackson/wiki/Jackson-Release-2.9.9
lists.apache.org/thread.html/3f99ae8... WEB
https://lists.apache.org/thread.html/3f99ae8dcdbd69438cb733d745ee3ad5e852068490719a66509b4592@%3Ccommits.cassandra.apache.org%3E
lists.apache.org/thread.html/519eb0f... WEB
https://lists.apache.org/thread.html/519eb0fd45642dcecd9ff74cb3e71c20a4753f7d82e2f07864b5108f@%3Cdev.drill.apache.org%3E
lists.apache.org/thread.html/88cd253... WEB
https://lists.apache.org/thread.html/88cd25375805950ae7337e669b0cb0eeda98b9604c1b8d806dccbad2@%3Creviews.spark.apache.org%3E
lists.apache.org/thread.html/b0656d3... WEB
https://lists.apache.org/thread.html/b0656d359c7d40ec9f39c8cc61bca66802ef9a2a12ee199f5b0c1442@%3Cdev.drill.apache.org%3E
lists.apache.org/thread.html/bcce5a9... WEB
https://lists.apache.org/thread.html/bcce5a9c532b386c68dab2f6b3ce8b0cc9b950ec551766e76391caa3@%3Ccommits.nifi.apache.org%3E
lists.apache.org/thread.html/f9bc3e5... WEB
https://lists.apache.org/thread.html/f9bc3e55f4e28d1dcd1a69aae6d53e609a758e34d2869b4d798e13cc@%3Cissues.drill.apache.org%3E
lists.apache.org/thread.html/r204ba2... WEB
https://lists.apache.org/thread.html/r204ba2a9ea750f38d789d2bb429cc0925ad6133deea7cbc3001d96b5@%3Csolr-user.lucene.apache.org%3E

Frequently Asked Questions

What is CVE-2019-12086?
CVE-2019-12086 is a security vulnerability in Jackson databind involving Information exposure in FasterXML jackson-databind under CWE-502: Deserialization of Untrusted Data.
Which Jackson databind versions are affected?
Affected versions include releases prior to 2.9.9, 2.8.11.4, 2.7.9.6, 2.6.7.3 across affected packages: com.fasterxml.jackson.core:jackson-databind.
What version fixes CVE-2019-12086?
Upgrading to 2.9.9, 2.8.11.4, 2.7.9.6, 2.6.7.3 (or the latest patched release for your respective branch) resolves the vulnerability.
Is jackson-databind affected?
Yes, com.fasterxml.jackson.core:jackson-databind is affected in releases prior to 2.9.9, 2.8.11.4, 2.7.9.6, 2.6.7.3. Upgrade your dependency to 2.9.9, 2.8.11.4, 2.7.9.6, 2.6.7.3 or later.
What is the CVSS score of CVE-2019-12086?
CVE-2019-12086 has a CVSS v3.1 base score of 7.5 (HIGH) with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N.
What CWE is associated with CVE-2019-12086?
CVE-2019-12086 is classified under CWE-502: Deserialization of Untrusted Data (The product deserializes untrusted data without sufficiently ensuring that the resulting data will be valid.).
How can I check Maven dependencies for CVE-2019-12086?
Run the dependency tree command: 'mvn dependency:tree -Dincludes=com.fasterxml.jackson.core'. This command lists direct and transitive dependencies in your build configuration so you can verify if a vulnerable version is resolved.
Machine-readable OSV JSON OSV v1.5 Schema
Normalized schema output
View Raw JSON 
{
  "schema_version" : "1.4.0",
  "id" : "GHSA-5ww9-j83m-q7qx",
  "modified" : "2024-03-15T01:06:41Z",
  "published" : "2019-05-23T09:32:24Z",
  "aliases" : [ "CVE-2019-12086" ],
  "summary" : "Information exposure in FasterXML jackson-databind",
  "details" : "A Polymorphic Typing issue was discovered in FasterXML jackson-databind 2.x before 2.9.9. When Default Typing is enabled (either globally or for a specific property) for an externally exposed JSON endpoint, the service has the mysql-connector-java jar (8.0.14 or earlier) in the classpath, and an attacker can host a crafted MySQL server reachable by the victim, an attacker can send a crafted JSON message that allows them to read arbitrary local files on the server. This occurs because of missing com.mysql.cj.jdbc.admin.MiniAdmin validation.",
  "severity" : [ {
    "type" : "CVSS_V3",
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  "database_specific" : {
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    "severity" : "HIGH",
    "github_reviewed" : true,
    "github_reviewed_at" : "2019-05-22T04:34:56Z",
    "nvd_published_at" : "2019-05-17T17:29:00Z"
  }
}