CVE-2023-42276: Hutool core Hutool Buffer Overflow Vulnerability Vulnerability

CRITICAL
Advisory Identifier: GHSA-rxgf-r843-g53h
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CVSS 9.8
CWE-120
Published
Advisory Summary

CVE-2023-42276 is a CRITICAL (CVSS 9.8) hutool buffer overflow vulnerability vulnerability (CWE-120: Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')) affecting Hutool core libraries in the Maven ecosystem. The issue involves hutool buffer overflow vulnerability. Remediation is available in the latest vendor maintenance releases.

CVE-2023-42276 at a Glance

CVE Identifier CVE-2023-42276
GHSA Identifier GHSA-rxgf-r843-g53h
Severity CRITICAL
CVSS v3.1 Base Score 9.8
CWE Classification CWE-120: Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')
Affected Product Hutool core
Package Ecosystem Maven
Published Date
Last Updated

Security Impact

CVSS: 9.8

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:H/A:H).

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 High (A:H)

How to Fix CVE-2023-42276

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

cn.hutool:hutool-core fixed: Latest secure release 
<dependency>
    <groupId>cn.hutool</groupId>
    <artifactId>hutool-core</artifactId>
    <version>Latest secure release</version>
</dependency>
cn.hutool:hutool-json fixed: Latest secure release 
<dependency>
    <groupId>cn.hutool</groupId>
    <artifactId>hutool-json</artifactId>
    <version>Latest secure release</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=cn.hutool

How to Check if You Are Affected

To determine whether your Java application is affected by CVE-2023-42276, inspect your build dependencies using the Maven Dependency Plugin:

mvn dependency:tree -Dincludes=cn.hutool

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

Note: The mvn dependency:tree -Dincludes=cn.hutool 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-120: Buffer Copy without Checking Size of Input ('Classic Buffer Overflow'), where the product copies an input buffer to an output buffer without verifying that the size of the input buffer is less than the size of the output buffer. In Hutool core, 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

hutool v5.8.21 was discovered to contain a buffer overflow via the component `jsonArray`.

CVE-2023-42276 Affected Hutool core Versions

2 component(s)
Product / Package Ecosystem Affected Versions Fixed Version
cn.hutool:hutool-core
maven/cn.hutool/hutool-core
Maven
≤ 5.8.21
cn.hutool:hutool-json
maven/cn.hutool/hutool-json
Maven
≤ 5.8.21

References

NVD — CVE-2023-42276 NVD
https://nvd.nist.gov/vuln/detail/CVE-2023-42276
Hutool core Source Repository REPOSITORY
https://github.com/dromara/hutool/issues/3286
Security Fix Commit FIX COMMIT
https://github.com/dromara/hutool/commit/9ba8f9ca5dd32441f2e0f150cb22fa178bb771d3
Hutool core Source Repository REPOSITORY
https://github.com/dromara/hutool

Frequently Asked Questions

What is CVE-2023-42276?
CVE-2023-42276 is a security vulnerability in Hutool core involving hutool Buffer Overflow vulnerability under CWE-120: Buffer Copy without Checking Size of Input ('Classic Buffer Overflow').
Which Hutool core versions are affected?
Affected versions include releases prior to current release patches across affected packages: cn.hutool:hutool-core, cn.hutool:hutool-json.
What version fixes CVE-2023-42276?
Upgrading to current release patches (or the latest patched release for your respective branch) resolves the vulnerability.
Is hutool-core affected?
Yes, cn.hutool:hutool-core is affected in releases prior to Latest secure release. Upgrade your dependency to Latest secure release or later.
Is hutool-json affected?
Yes, cn.hutool:hutool-json is affected in releases prior to Latest secure release. Upgrade your dependency to Latest secure release or later.
What is the CVSS score of CVE-2023-42276?
CVE-2023-42276 has a CVSS v3.1 base score of 9.8 (CRITICAL) with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
What CWE is associated with CVE-2023-42276?
CVE-2023-42276 is classified under CWE-120: Buffer Copy without Checking Size of Input ('Classic Buffer Overflow') (The product copies an input buffer to an output buffer without verifying that the size of the input buffer is less than the size of the output buffer.).
How can I check Maven dependencies for CVE-2023-42276?
Run the dependency tree command: 'mvn dependency:tree -Dincludes=cn.hutool'. 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-rxgf-r843-g53h",
  "modified" : "2023-09-13T14:08:47Z",
  "published" : "2023-09-09T00:30:48Z",
  "aliases" : [ "CVE-2023-42276" ],
  "summary" : "hutool Buffer Overflow vulnerability",
  "details" : "hutool v5.8.21 was discovered to contain a buffer overflow via the component `jsonArray`.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "Maven",
      "name" : "cn.hutool:hutool-core"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "last_affected" : "5.8.21"
      } ]
    } ]
  }, {
    "package" : {
      "ecosystem" : "Maven",
      "name" : "cn.hutool:hutool-json"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "last_affected" : "5.8.21"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2023-42276"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/dromara/hutool/issues/3286"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/dromara/hutool/commit/9ba8f9ca5dd32441f2e0f150cb22fa178bb771d3"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/dromara/hutool"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-120" ],
    "severity" : "CRITICAL",
    "github_reviewed" : true,
    "github_reviewed_at" : "2023-09-11T18:03:17Z",
    "nvd_published_at" : "2023-09-08T22:15:11Z"
  }
}