CVE-2019-5919: Nablarch fw web Nablarch Incomplete Cryptography Vulnerability

CRITICAL
Advisory Identifier: GHSA-hmx6-gc2p-5p82
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CVSS 9.1
CWE-327
Published
Advisory Summary

CVE-2019-5919 is a CRITICAL (CVSS 9.1) nablarch incomplete cryptography vulnerability (CWE-327: Use of a Broken or Risky Cryptographic Algorithm) affecting Nablarch fw web libraries in the Maven ecosystem. The issue involves nablarch incomplete cryptography. Remediation is available by upgrading affected packages to version 1.5.1.

CVE-2019-5919 at a Glance

CVE Identifier CVE-2019-5919
GHSA Identifier GHSA-hmx6-gc2p-5p82
Severity CRITICAL
CVSS v3.1 Base Score 9.1
CWE Classification CWE-327: Use of a Broken or Risky Cryptographic Algorithm
Affected Product Nablarch fw web
Package Ecosystem Maven
Published Date
Last Updated

Security Impact

CVSS: 9.1

The security impact metrics below are parsed directly from the CVSS v3.1 vector string (CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/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 High (I:H)
Availability None (A:N)

How to Fix CVE-2019-5919

To remediate this vulnerability, upgrade all affected Nablarch fw web 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.nablarch.framework:nablarch-fw-web fixed: 1.5.1 
<dependency>
    <groupId>com.nablarch.framework</groupId>
    <artifactId>nablarch-fw-web</artifactId>
    <version>1.5.1</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.nablarch.framework

How to Check if You Are Affected

To determine whether your Java application is affected by CVE-2019-5919, inspect your build dependencies using the Maven Dependency Plugin:

mvn dependency:tree -Dincludes=com.nablarch.framework

Analyze the terminal output to locate any version of Nablarch fw web in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 1.5.1), your application is affected.

Note: The mvn dependency:tree -Dincludes=com.nablarch.framework 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-327: Use of a Broken or Risky Cryptographic Algorithm, where the product uses a broken or risky cryptographic algorithm or protocol. In Nablarch fw web, 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

An incomplete cryptography of the data store function by using hidden tag in Nablarch 5 (5, and 5u1 to 5u13) allows remote attackers to obtain information of the stored data, to register invalid value, or alter the value via unspecified vectors.

CVE-2019-5919 Affected Nablarch fw web Versions

1 component(s)
Fixed Versions:
1.5.1
Product / Package Ecosystem Affected Versions Fixed Version
com.nablarch.framework:nablarch-fw-web
maven/com.nablarch.framework/nablarch-fw-web
Maven
< 1.5.1
1.5.1

References

NVD — CVE-2019-5919 NVD
https://nvd.nist.gov/vuln/detail/CVE-2019-5919
Nablarch fw web Source Repository REPOSITORY
https://github.com/nablarch/nablarch-fw-web/pull/53
Nablarch fw web Source Repository REPOSITORY
https://github.com/nablarch/nablarch-fw-web/pull/54
nablarch.atlassian.net/browse/nab-313 WEB
https://nablarch.atlassian.net/browse/NAB-313
jvn.jp/en/jp/jvn56542712/i... WEB
http://jvn.jp/en/jp/JVN56542712/index.html

Frequently Asked Questions

What is CVE-2019-5919?
CVE-2019-5919 is a security vulnerability in Nablarch fw web involving Nablarch Incomplete Cryptography under CWE-327: Use of a Broken or Risky Cryptographic Algorithm.
Which Nablarch fw web versions are affected?
Affected versions include releases prior to 1.5.1 across affected packages: com.nablarch.framework:nablarch-fw-web.
What version fixes CVE-2019-5919?
Upgrading to 1.5.1 (or the latest patched release for your respective branch) resolves the vulnerability.
Is nablarch-fw-web affected?
Yes, com.nablarch.framework:nablarch-fw-web is affected in releases prior to 1.5.1. Upgrade your dependency to 1.5.1 or later.
What is the CVSS score of CVE-2019-5919?
CVE-2019-5919 has a CVSS v3.1 base score of 9.1 (CRITICAL) with vector string CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N.
What CWE is associated with CVE-2019-5919?
CVE-2019-5919 is classified under CWE-327: Use of a Broken or Risky Cryptographic Algorithm (The product uses a broken or risky cryptographic algorithm or protocol.).
How can I check Maven dependencies for CVE-2019-5919?
Run the dependency tree command: 'mvn dependency:tree -Dincludes=com.nablarch.framework'. 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-hmx6-gc2p-5p82",
  "modified" : "2023-07-19T18:05:17Z",
  "published" : "2022-05-13T01:08:15Z",
  "aliases" : [ "CVE-2019-5919" ],
  "summary" : "Nablarch Incomplete Cryptography",
  "details" : "An incomplete cryptography of the data store function by using hidden tag in Nablarch 5 (5, and 5u1 to 5u13) allows remote attackers to obtain information of the stored data, to register invalid value, or alter the value via unspecified vectors.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "Maven",
      "name" : "com.nablarch.framework:nablarch-fw-web"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "1.5.1"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2019-5919"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/nablarch/nablarch-fw-web/pull/53"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/nablarch/nablarch-fw-web/pull/54"
  }, {
    "type" : "WEB",
    "url" : "https://nablarch.atlassian.net/browse/NAB-313"
  }, {
    "type" : "WEB",
    "url" : "http://jvn.jp/en/jp/JVN56542712/index.html"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-327" ],
    "severity" : "CRITICAL",
    "github_reviewed" : true,
    "github_reviewed_at" : "2023-07-19T18:05:17Z",
    "nvd_published_at" : "2019-03-12T22:29:00Z"
  }
}