CVE-2023-32692: Codeigniter4/framework Remote Code Execution Vulnerability

CRITICAL
Advisory Identifier: GHSA-m6m8-6gq8-c9fj
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CVSS 9.8
CWE-94
Published
Advisory Summary

CVE-2023-32692 is a CRITICAL (CVSS 9.8) remote code execution vulnerability (CWE-94: Improper Control of Generation of Code ('Code Injection')) affecting Codeigniter4/framework libraries in the Packagist ecosystem. The issue involves remote code execution vulnerability in validation placeholders in codeigniter4. Remediation is available by upgrading affected packages to version 4.3.5.

CVE-2023-32692 at a Glance

CVE Identifier CVE-2023-32692
GHSA Identifier GHSA-m6m8-6gq8-c9fj
Severity CRITICAL
CVSS v3.1 Base Score 9.8
CWE Classification CWE-94: Improper Control of Generation of Code ('Code Injection')
Affected Product Codeigniter4/framework
Package Ecosystem Packagist
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-2023-32692

To remediate this vulnerability, upgrade all affected Codeigniter4/framework dependencies to a patched release. Both direct and transitive dependencies should be checked, as frameworks or security libraries may pull in vulnerable versions transitively.

codeigniter4/framework fixed: 4.3.5 
Upgrade codeigniter4/framework to 4.3.5
Verify Direct and Transitive Dependencies

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

inspect dependencies for codeigniter4/framework

How to Check if You Are Affected

To determine whether your application is affected by CVE-2023-32692, inspect your project dependencies for Codeigniter4/framework:

inspect dependencies for codeigniter4/framework

Analyze the terminal output to locate any version of Codeigniter4/framework in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 4.3.5), your application is affected.

Note: Verify declared build manifests and deployed runtime container environments.

Technical Details

Vulnerability Mechanism & Technical Analysis

This vulnerability is classified under CWE-94: Improper Control of Generation of Code ('Code Injection'), where the product constructs all or part of a code segment using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the syntax or behavior of the intended code segment. In Codeigniter4/framework, 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

### Impact This vulnerability allows attackers to execute arbitrary code when you use Validation Placeholders. The vulnerability exists in the Validation library, and validation methods in the controller and in-model validation are also vulnerable because they use the Validation library internally. ### Patches Upgrade to v4.3.5 or later. ### Workarounds Setting validation rules with an array. E.g.: ```php $validation->setRules([ 'email' => ['required', 'valid_email, 'is_unique[users.email,id,{id}]'], ]); ``` ### References - https://codeigniter4.github.io/userguide/libraries/validation.html#validation-placeholders - https://codeigniter4.github.io/userguide/incoming/controllers.html#validating-data - https://codeigniter4.github.io/userguide/models/model.html#in-model-validation ### For more information If you have any questions or comments about this advisory: * Open an issue in [codeigniter4/CodeIgniter4](https://github.com/codeigniter4/CodeIgniter4/issues) * Email us at [SECURITY.md](https://github.com/codeigniter4/CodeIgniter4/blob/develop/SECURITY.md)

CVE-2023-32692 Affected Codeigniter4/framework Versions

1 component(s)
Fixed Versions:
4.3.5
Product / Package Ecosystem Affected Versions Fixed Version
codeigniter4/framework
 Packagist
< 4.3.5
4.3.5

References

GitHub Advisory / Wiki ADVISORY
https://github.com/codeigniter4/CodeIgniter4/security/advisories/GHSA-m6m8-6gq8-c9fj
NVD — CVE-2023-32692 NVD
https://nvd.nist.gov/vuln/detail/CVE-2023-32692
Security Fix Commit FIX COMMIT
https://github.com/codeigniter4/CodeIgniter4/commit/6af677177fa1d9ad62f7a793bc96cba3068632ba
Codeigniter4/framework Source Repository REPOSITORY
https://github.com/codeigniter4/CodeIgniter4
Codeigniter4/framework Source Repository REPOSITORY
https://github.com/codeigniter4/CodeIgniter4/blob/develop/CHANGELOG.md
Codeigniter4/framework Source Repository REPOSITORY
https://github.com/codeigniter4/CodeIgniter4/blob/develop/CHANGELOG.md#v435-2023-05-21

Frequently Asked Questions

What is CVE-2023-32692?
CVE-2023-32692 is a security vulnerability in Codeigniter4/framework involving Remote Code Execution Vulnerability in Validation Placeholders in CodeIgniter4 under CWE-94: Improper Control of Generation of Code ('Code Injection').
Which Codeigniter4/framework versions are affected?
Affected versions include releases prior to 4.3.5 across affected packages: codeigniter4/framework.
What version fixes CVE-2023-32692?
Upgrading to 4.3.5 (or the latest patched release for your respective branch) resolves the vulnerability.
Is codeigniter4/framework affected?
Yes, codeigniter4/framework is affected in releases prior to 4.3.5. Upgrade your dependency to 4.3.5 or later.
What is the CVSS score of CVE-2023-32692?
CVE-2023-32692 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-2023-32692?
CVE-2023-32692 is classified under CWE-94: Improper Control of Generation of Code ('Code Injection') (The product constructs all or part of a code segment using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the syntax or behavior of the intended code segment.).
How can I check Packagist dependencies for CVE-2023-32692?
Run the dependency tree command: 'inspect dependencies for codeigniter4/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-m6m8-6gq8-c9fj",
  "modified" : "2023-10-24T22:50:57Z",
  "published" : "2023-05-22T19:49:11Z",
  "aliases" : [ "CVE-2023-32692" ],
  "summary" : "Remote Code Execution Vulnerability in Validation Placeholders in CodeIgniter4",
  "details" : "### Impact\nThis vulnerability allows attackers to execute arbitrary code when you use Validation Placeholders.\n\nThe vulnerability exists in the Validation library, and validation methods in the controller and in-model validation are also vulnerable because they use the Validation library internally.\n\n### Patches\nUpgrade to v4.3.5 or later.\n\n### Workarounds\nSetting validation rules with an array.\n\nE.g.:\n```php\n$validation->setRules([\n    'email' => ['required', 'valid_email, 'is_unique[users.email,id,{id}]'],\n]);\n```\n\n### References\n- https://codeigniter4.github.io/userguide/libraries/validation.html#validation-placeholders\n- https://codeigniter4.github.io/userguide/incoming/controllers.html#validating-data\n- https://codeigniter4.github.io/userguide/models/model.html#in-model-validation\n\n### For more information\nIf you have any questions or comments about this advisory:\n* Open an issue in [codeigniter4/CodeIgniter4](https://github.com/codeigniter4/CodeIgniter4/issues)\n* Email us at [SECURITY.md](https://github.com/codeigniter4/CodeIgniter4/blob/develop/SECURITY.md)\n",
  "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" : "Packagist",
      "name" : "codeigniter4/framework"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "4.3.5"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "WEB",
    "url" : "https://github.com/codeigniter4/CodeIgniter4/security/advisories/GHSA-m6m8-6gq8-c9fj"
  }, {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2023-32692"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/codeigniter4/CodeIgniter4/commit/6af677177fa1d9ad62f7a793bc96cba3068632ba"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/codeigniter4/CodeIgniter4"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/codeigniter4/CodeIgniter4/blob/develop/CHANGELOG.md"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/codeigniter4/CodeIgniter4/blob/develop/CHANGELOG.md#v435-2023-05-21"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-94" ],
    "severity" : "CRITICAL",
    "github_reviewed" : true,
    "github_reviewed_at" : "2023-05-22T19:49:11Z",
    "nvd_published_at" : "2023-05-30T04:15:10Z"
  }
}