CVE-2023-47129: Statamic/cms Remote Code Execution Vulnerability

HIGH
Advisory Identifier: GHSA-72hg-5wr5-rmfc
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CVSS 8.3
CWE-434
Published
Advisory Summary

CVE-2023-47129 is a HIGH (CVSS 8.3) remote code execution vulnerability (CWE-434: Unrestricted Upload of File with Dangerous Type) affecting Statamic/cms libraries in the Packagist ecosystem. The issue involves statamic cms remote code execution via front-end form uploads. Remediation is available by upgrading affected packages to version 4.33.0, 3.4.13.

CVE-2023-47129 at a Glance

CVE Identifier CVE-2023-47129
GHSA Identifier GHSA-72hg-5wr5-rmfc
Severity HIGH
CVSS v3.1 Base Score 8.3
CWE Classification CWE-434: Unrestricted Upload of File with Dangerous Type
Affected Product Statamic/cms
Package Ecosystem Packagist
Published Date
Last Updated

Security Impact

CVSS: 8.3

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

Attack Vector Network (AV:N)
Attack Complexity High (AC:H)
Privileges Required None (PR:N)
User Interaction Required (UI:R)
Scope Changed (S:C)
Confidentiality High (C:H)
Integrity High (I:H)
Availability High (A:H)

How to Fix CVE-2023-47129

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

statamic/cms fixed: 4.33.0 
Upgrade statamic/cms to 4.33.0
statamic/cms fixed: 3.4.13 
Upgrade statamic/cms to 3.4.13
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 statamic/cms

How to Check if You Are Affected

To determine whether your application is affected by CVE-2023-47129, inspect your project dependencies for Statamic/cms:

inspect dependencies for statamic/cms

Analyze the terminal output to locate any version of Statamic/cms in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 4.33.0), 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-434: Unrestricted Upload of File with Dangerous Type, where the product allows the upload or transfer of dangerous file types that are automatically processed within its environment. In Statamic/cms, 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 On front-end forms with an asset upload field, PHP files crafted to look like images may be uploaded regardless of mime validation rules. This only affects forms using the "Forms" feature and not just _any_ arbitrary form. This does not affect the control panel. ### Patches It has been patched in 3.4.13 and 4.33.0.

CVE-2023-47129 Affected Statamic/cms Versions

2 component(s)
Fixed Versions:
4.33.03.4.13
Product / Package Ecosystem Affected Versions Fixed Version
statamic/cms
 Packagist
≥ 4.0.0
< 4.33.0
4.33.0
statamic/cms
 Packagist
< 3.4.13
3.4.13

References

GitHub Advisory / Wiki ADVISORY
https://github.com/statamic/cms/security/advisories/GHSA-72hg-5wr5-rmfc
NVD — CVE-2023-47129 NVD
https://nvd.nist.gov/vuln/detail/CVE-2023-47129
Security Fix Commit FIX COMMIT
https://github.com/statamic/cms/commit/098ef8024d97286ca501273c18ae75b646262d75
Security Fix Commit FIX COMMIT
https://github.com/statamic/cms/commit/f6c688154f6bdbd0b67039f8f11dcd98ba061e77
Statamic/cms Source Repository REPOSITORY
https://github.com/statamic/cms

Frequently Asked Questions

What is CVE-2023-47129?
CVE-2023-47129 is a security vulnerability in Statamic/cms involving Statamic CMS remote code execution via front-end form uploads under CWE-434: Unrestricted Upload of File with Dangerous Type.
Which Statamic/cms versions are affected?
Affected versions include releases prior to 4.33.0, 3.4.13 across affected packages: statamic/cms.
What version fixes CVE-2023-47129?
Upgrading to 4.33.0, 3.4.13 (or the latest patched release for your respective branch) resolves the vulnerability.
Is statamic/cms affected?
Yes, statamic/cms is affected in releases prior to 4.33.0, 3.4.13. Upgrade your dependency to 4.33.0, 3.4.13 or later.
What is the CVSS score of CVE-2023-47129?
CVE-2023-47129 has a CVSS v3.1 base score of 8.3 (HIGH) with vector string CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:H.
What CWE is associated with CVE-2023-47129?
CVE-2023-47129 is classified under CWE-434: Unrestricted Upload of File with Dangerous Type (The product allows the upload or transfer of dangerous file types that are automatically processed within its environment.).
How can I check Packagist dependencies for CVE-2023-47129?
Run the dependency tree command: 'inspect dependencies for statamic/cms'. 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-72hg-5wr5-rmfc",
  "modified" : "2023-11-12T15:57:58Z",
  "published" : "2023-11-12T15:57:58Z",
  "aliases" : [ "CVE-2023-47129" ],
  "summary" : "Statamic CMS remote code execution via front-end form uploads",
  "details" : "### Impact\nOn front-end forms with an asset upload field, PHP files crafted to look like images may be uploaded regardless of mime validation rules. This only affects forms using the \"Forms\" feature and not just _any_ arbitrary form. This does not affect the control panel.\n\n### Patches\nIt has been patched in 3.4.13 and 4.33.0.\n",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:H"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "Packagist",
      "name" : "statamic/cms"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "4.0.0"
      }, {
        "fixed" : "4.33.0"
      } ]
    } ]
  }, {
    "package" : {
      "ecosystem" : "Packagist",
      "name" : "statamic/cms"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "3.4.13"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "WEB",
    "url" : "https://github.com/statamic/cms/security/advisories/GHSA-72hg-5wr5-rmfc"
  }, {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2023-47129"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/statamic/cms/commit/098ef8024d97286ca501273c18ae75b646262d75"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/statamic/cms/commit/f6c688154f6bdbd0b67039f8f11dcd98ba061e77"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/statamic/cms"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-434" ],
    "severity" : "HIGH",
    "github_reviewed" : true,
    "github_reviewed_at" : "2023-11-12T15:57:58Z",
    "nvd_published_at" : "2023-11-10T19:15:16Z"
  }
}