CVE-2023-33695: Hutool core Insecure Temporary File Vulnerability

HIGH
Advisory Identifier: GHSA-7mcw-xmx3-7p8m
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CVSS 7.1
CWE-732 CWE-377
Published
Advisory Summary

CVE-2023-33695 is a HIGH (CVSS 7.1) insecure temporary file vulnerability (CWE-732: Incorrect Permission Assignment for Critical Resource) affecting Hutool core libraries in the Maven ecosystem. The issue involves insecure temporary file in hutool. Remediation is available by upgrading affected packages to version 5.8.19.

CVE-2023-33695 at a Glance

CVE Identifier CVE-2023-33695
GHSA Identifier GHSA-7mcw-xmx3-7p8m
Severity HIGH
CVSS v3.1 Base Score 7.1
CWE Classification CWE-732: Incorrect Permission Assignment for Critical Resource
Affected Product Hutool core
Package Ecosystem Maven
Published Date
Last Updated

Security Impact

CVSS: 7.1

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

Attack Vector Local (AV:L)
Attack Complexity Low (AC:L)
Privileges Required Low (PR:L)
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-2023-33695

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: 5.8.19 
<dependency>
    <groupId>cn.hutool</groupId>
    <artifactId>hutool-core</artifactId>
    <version>5.8.19</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-2023-33695, 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 5.8.19), 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-732: Incorrect Permission Assignment for Critical Resource, where the product specifies permissions for a security-critical resource in a way that allows that resource to be read or modified by unintended actors. 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 v5.8.17 and below was discovered to contain an information disclosure vulnerability via the `File.createTempFile()` function at `/core/io/FileUtil.java`.

CVE-2023-33695 Affected Hutool core Versions

1 component(s)
Fixed Versions:
5.8.19
Product / Package Ecosystem Affected Versions Fixed Version
cn.hutool:hutool-core
maven/cn.hutool/hutool-core
Maven
< 5.8.19
5.8.19

References

NVD — CVE-2023-33695 NVD
https://nvd.nist.gov/vuln/detail/CVE-2023-33695
Hutool core Source Repository REPOSITORY
https://github.com/dromara/hutool/issues/3103
Security Fix Commit FIX COMMIT
https://github.com/dromara/hutool/commit/c33550f703f5d1d7dd71ad2992d79a5e5532ce2c
Hutool core Source Repository REPOSITORY
https://github.com/dromara/hutool

Frequently Asked Questions

What is CVE-2023-33695?
CVE-2023-33695 is a security vulnerability in Hutool core involving Insecure Temporary File in HuTool under CWE-732: Incorrect Permission Assignment for Critical Resource.
Which Hutool core versions are affected?
Affected versions include releases prior to 5.8.19 across affected packages: cn.hutool:hutool-core.
What version fixes CVE-2023-33695?
Upgrading to 5.8.19 (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 5.8.19. Upgrade your dependency to 5.8.19 or later.
What is the CVSS score of CVE-2023-33695?
CVE-2023-33695 has a CVSS v3.1 base score of 7.1 (HIGH) with vector string CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N.
What CWE is associated with CVE-2023-33695?
CVE-2023-33695 is classified under CWE-732: Incorrect Permission Assignment for Critical Resource (The product specifies permissions for a security-critical resource in a way that allows that resource to be read or modified by unintended actors.).
How can I check Maven dependencies for CVE-2023-33695?
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-7mcw-xmx3-7p8m",
  "modified" : "2023-06-21T17:18:42Z",
  "published" : "2023-06-13T18:30:39Z",
  "aliases" : [ "CVE-2023-33695" ],
  "summary" : "Insecure Temporary File in HuTool",
  "details" : "Hutool v5.8.17 and below was discovered to contain an information disclosure vulnerability via the `File.createTempFile()` function at `/core/io/FileUtil.java`.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "Maven",
      "name" : "cn.hutool:hutool-core"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "5.8.19"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2023-33695"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/dromara/hutool/issues/3103"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/dromara/hutool/commit/c33550f703f5d1d7dd71ad2992d79a5e5532ce2c"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/dromara/hutool"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-377", "CWE-732" ],
    "severity" : "HIGH",
    "github_reviewed" : true,
    "github_reviewed_at" : "2023-06-14T16:38:27Z",
    "nvd_published_at" : "2023-06-13T16:15:13Z"
  }
}