CVE-2023-48217: Statamic/cms Remote Code Execution Vulnerability

HIGH
Advisory Identifier: GHSA-2r53-9295-3m86
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CVSS 8.8
CWE-94 CWE-434
Published
Advisory Summary

CVE-2023-48217 is a HIGH (CVSS 8.8) remote code execution vulnerability (CWE-94: Improper Control of Generation of Code ('Code Injection')) affecting Statamic/cms libraries in the Packagist ecosystem. The issue involves statamic cms vulnerable to remote code execution via form uploads. Remediation is available by upgrading affected packages to version 4.34.0, 3.4.14.

CVE-2023-48217 at a Glance

CVE Identifier CVE-2023-48217
GHSA Identifier GHSA-2r53-9295-3m86
Severity HIGH
CVSS v3.1 Base Score 8.8
CWE Classification CWE-94: Improper Control of Generation of Code ('Code Injection')
Affected Product Statamic/cms
Package Ecosystem Packagist
Published Date
Last Updated

Security Impact

CVSS: 8.8

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

Attack Vector Network (AV:N)
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 High (A:H)

How to Fix CVE-2023-48217

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: 4.34.0 
Upgrade statamic/cms to 4.34.0
statamic/cms fixed: 3.4.14 
Upgrade statamic/cms to 3.4.14
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-2023-48217, 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 4.34.0), 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-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 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 Similar to [another advisory](https://github.com/statamic/cms/security/advisories/GHSA-72hg-5wr5-rmfc), certain additional PHP files crafted to look like images may be uploaded regardless of mime type validation rules. This affects front-end forms using the "Forms" feature, and asset upload fields in the control panel. ### Patches It has been patched in 3.4.14 and 4.34.0.

CVE-2023-48217 Affected Statamic/cms Versions

2 component(s)
Fixed Versions:
4.34.03.4.14
Product / Package Ecosystem Affected Versions Fixed Version
statamic/cms
 Packagist
≥ 4.0.0
< 4.34.0
4.34.0
statamic/cms
 Packagist
< 3.4.14
3.4.14

References

GitHub Advisory / Wiki ADVISORY
https://github.com/statamic/cms/security/advisories/GHSA-2r53-9295-3m86
NVD — CVE-2023-48217 NVD
https://nvd.nist.gov/vuln/detail/CVE-2023-48217
Statamic/cms Source Repository REPOSITORY
https://github.com/statamic/cms/pull/8991
Statamic/cms Source Repository REPOSITORY
https://github.com/statamic/cms/pull/8992
Security Fix Commit FIX COMMIT
https://github.com/statamic/cms/commit/4c6fe041e2203a8033e5949ce4a5d9d6c0ad2411
Security Fix Commit FIX COMMIT
https://github.com/statamic/cms/commit/da28afde818d605179fbb63b96eabafabad876b6
Statamic/cms Source Repository REPOSITORY
https://github.com/statamic/cms
Statamic/cms Release RELEASE
https://github.com/statamic/cms/releases/tag/v3.4.14
Statamic/cms Release RELEASE
https://github.com/statamic/cms/releases/tag/v4.34.0

Frequently Asked Questions

What is CVE-2023-48217?
CVE-2023-48217 is a security vulnerability in Statamic/cms involving Statamic CMS vulnerable to remote code execution via form uploads under CWE-94: Improper Control of Generation of Code ('Code Injection').
Which Statamic/cms versions are affected?
Affected versions include releases prior to 4.34.0, 3.4.14 across affected packages: statamic/cms.
What version fixes CVE-2023-48217?
Upgrading to 4.34.0, 3.4.14 (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 4.34.0, 3.4.14. Upgrade your dependency to 4.34.0, 3.4.14 or later.
What is the CVSS score of CVE-2023-48217?
CVE-2023-48217 has a CVSS v3.1 base score of 8.8 (HIGH) with vector string CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.
What CWE is associated with CVE-2023-48217?
CVE-2023-48217 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-2023-48217?
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-2r53-9295-3m86",
  "modified" : "2023-11-15T18:08:58Z",
  "published" : "2023-11-14T22:25:41Z",
  "aliases" : [ "CVE-2023-48217" ],
  "summary" : "Statamic CMS vulnerable to remote code execution via form uploads",
  "details" : "### Impact\n\nSimilar to [another advisory](https://github.com/statamic/cms/security/advisories/GHSA-72hg-5wr5-rmfc), certain additional PHP files crafted to look like images may be uploaded regardless of mime type validation rules. This affects front-end forms using the \"Forms\" feature, and asset upload fields in the control panel.\n\n### Patches\nIt has been patched in 3.4.14 and 4.34.0.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "Packagist",
      "name" : "statamic/cms"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "4.0.0"
      }, {
        "fixed" : "4.34.0"
      } ]
    } ]
  }, {
    "package" : {
      "ecosystem" : "Packagist",
      "name" : "statamic/cms"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "3.4.14"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "WEB",
    "url" : "https://github.com/statamic/cms/security/advisories/GHSA-2r53-9295-3m86"
  }, {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2023-48217"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/statamic/cms/pull/8991"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/statamic/cms/pull/8992"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/statamic/cms/commit/4c6fe041e2203a8033e5949ce4a5d9d6c0ad2411"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/statamic/cms/commit/da28afde818d605179fbb63b96eabafabad876b6"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/statamic/cms"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/statamic/cms/releases/tag/v3.4.14"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/statamic/cms/releases/tag/v4.34.0"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-434", "CWE-94" ],
    "severity" : "HIGH",
    "github_reviewed" : true,
    "github_reviewed_at" : "2023-11-14T22:25:41Z",
    "nvd_published_at" : "2023-11-14T22:15:31Z"
  }
}