CVE-2023-30331: Beetl Server-side Template Injection Vulnerability

CRITICAL
Advisory Identifier: GHSA-m69h-4frq-vwq7
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CVSS 9.8
Published
Advisory Summary

CVE-2023-30331 is a CRITICAL (CVSS 9.8) server-side template injection vulnerability (General Security Weakness) affecting Beetl libraries in the Maven ecosystem. The issue involves server-side template injection in beetl. Remediation is available in the latest vendor maintenance releases.

CVE-2023-30331 at a Glance

CVE Identifier CVE-2023-30331
GHSA Identifier GHSA-m69h-4frq-vwq7
Severity CRITICAL
CVSS v3.1 Base Score 9.8
CWE Classification General Security Weakness
Affected Product Beetl
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-2023-30331

To remediate this vulnerability, upgrade all affected Beetl 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.ibeetl:beetl fixed: Latest secure release 
<dependency>
    <groupId>com.ibeetl</groupId>
    <artifactId>beetl</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=com.ibeetl

How to Check if You Are Affected

To determine whether your Java application is affected by CVE-2023-30331, inspect your build dependencies using the Maven Dependency Plugin:

mvn dependency:tree -Dincludes=com.ibeetl

Analyze the terminal output to locate any version of Beetl 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=com.ibeetl 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 General Security Weakness. In Beetl, 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 issue in the render function of beetl v3.15.0 allows attackers to execute server-side template injection (SSTI) via a crafted payload.

CVE-2023-30331 Affected Beetl Versions

1 component(s)
Product / Package Ecosystem Affected Versions Fixed Version
com.ibeetl:beetl
maven/com.ibeetl/beetl
Maven
≤ 3.15.0.RELEASE

References

NVD — CVE-2023-30331 NVD
https://nvd.nist.gov/vuln/detail/CVE-2023-30331
gitee.com/xiandafu/beetl/issu... WEB
https://gitee.com/xiandafu/beetl/issues/I6RUIP
Beetl Source Repository REPOSITORY
https://github.com/javamonkey/beetl2.0
Beetl Source Repository REPOSITORY
https://github.com/luelueking/Beetl-3.15.0-vuln-poc

Frequently Asked Questions

What is CVE-2023-30331?
CVE-2023-30331 is a security vulnerability in Beetl involving Server-side template injection in beetl under General Security Weakness.
Which Beetl versions are affected?
Affected versions include releases prior to current release patches across affected packages: com.ibeetl:beetl.
What version fixes CVE-2023-30331?
Upgrading to current release patches (or the latest patched release for your respective branch) resolves the vulnerability.
Is beetl affected?
Yes, com.ibeetl:beetl 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-2023-30331?
CVE-2023-30331 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-2023-30331?
CVE-2023-30331 is classified under General Security Weakness.
How can I check Maven dependencies for CVE-2023-30331?
Run the dependency tree command: 'mvn dependency:tree -Dincludes=com.ibeetl'. 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-m69h-4frq-vwq7",
  "modified" : "2023-05-10T15:26:56Z",
  "published" : "2023-05-04T03:30:22Z",
  "aliases" : [ "CVE-2023-30331" ],
  "summary" : "Server-side template injection in beetl",
  "details" : "An issue in the render function of beetl v3.15.0 allows attackers to execute server-side template injection (SSTI) via a crafted payload.",
  "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" : "com.ibeetl:beetl"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "last_affected" : "3.15.0.RELEASE"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2023-30331"
  }, {
    "type" : "WEB",
    "url" : "https://gitee.com/xiandafu/beetl/issues/I6RUIP"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/javamonkey/beetl2.0"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/luelueking/Beetl-3.15.0-vuln-poc"
  } ],
  "database_specific" : {
    "cwe_ids" : [ ],
    "severity" : "CRITICAL",
    "github_reviewed" : true,
    "github_reviewed_at" : "2023-05-05T02:21:41Z",
    "nvd_published_at" : "2023-05-04T03:15:21Z"
  }
}