CVE-2023-47621: Duncanmcclean/guest entries Remote Code Execution Vulnerability

HIGH
Advisory Identifier: GHSA-rw82-mhmx-grmj
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CVSS 8.8
CWE-434
Published
Advisory Summary

CVE-2023-47621 is a HIGH (CVSS 8.8) remote code execution vulnerability (CWE-434: Unrestricted Upload of File with Dangerous Type) affecting Duncanmcclean/guest entries libraries in the Packagist ecosystem. The issue involves guest entries remote code execution via file uploads. Remediation is available by upgrading affected packages to version 3.1.2.

CVE-2023-47621 at a Glance

CVE Identifier CVE-2023-47621
GHSA Identifier GHSA-rw82-mhmx-grmj
Severity HIGH
CVSS v3.1 Base Score 8.8
CWE Classification CWE-434: Unrestricted Upload of File with Dangerous Type
Affected Product Duncanmcclean/guest entries
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-2023-47621

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

duncanmcclean/guest-entries fixed: 3.1.2 
Upgrade duncanmcclean/guest-entries to 3.1.2
doublethreedigital/guest-entries fixed: 3.1.2 
Upgrade doublethreedigital/guest-entries to 3.1.2
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 duncanmcclean/guest-entries

How to Check if You Are Affected

To determine whether your application is affected by CVE-2023-47621, inspect your project dependencies for Duncanmcclean/guest entries:

inspect dependencies for duncanmcclean/guest-entries

Analyze the terminal output to locate any version of Duncanmcclean/guest entries in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 3.1.2), 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 Duncanmcclean/guest entries, 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 When using the file uploads feature, it was possible to upload PHP files. ### Patches The vulnerability is fixed in v3.1.2.

CVE-2023-47621 Affected Duncanmcclean/guest entries Versions

2 component(s)
Fixed Versions:
3.1.2
Product / Package Ecosystem Affected Versions Fixed Version
duncanmcclean/guest-entries
 Packagist
< 3.1.2
3.1.2
doublethreedigital/guest-entries
 Packagist
< 3.1.2
3.1.2

References

GitHub Advisory / Wiki ADVISORY
https://github.com/duncanmcclean/guest-entries/security/advisories/GHSA-rw82-mhmx-grmj
NVD — CVE-2023-47621 NVD
https://nvd.nist.gov/vuln/detail/CVE-2023-47621
Security Fix Commit FIX COMMIT
https://github.com/duncanmcclean/guest-entries/commit/a8e17b4413bfbbc337a887761a6c858ef1ddb4da
Duncanmcclean/guest entries Source Repository REPOSITORY
https://github.com/duncanmcclean/guest-entries

Frequently Asked Questions

What is CVE-2023-47621?
CVE-2023-47621 is a security vulnerability in Duncanmcclean/guest entries involving Guest Entries Remote code execution via file uploads under CWE-434: Unrestricted Upload of File with Dangerous Type.
Which Duncanmcclean/guest entries versions are affected?
Affected versions include releases prior to 3.1.2 across affected packages: duncanmcclean/guest-entries, doublethreedigital/guest-entries.
What version fixes CVE-2023-47621?
Upgrading to 3.1.2 (or the latest patched release for your respective branch) resolves the vulnerability.
Is duncanmcclean/guest-entries affected?
Yes, duncanmcclean/guest-entries is affected in releases prior to 3.1.2. Upgrade your dependency to 3.1.2 or later.
Is doublethreedigital/guest-entries affected?
Yes, doublethreedigital/guest-entries is affected in releases prior to 3.1.2. Upgrade your dependency to 3.1.2 or later.
What is the CVSS score of CVE-2023-47621?
CVE-2023-47621 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-2023-47621?
CVE-2023-47621 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-2023-47621?
Run the dependency tree command: 'inspect dependencies for duncanmcclean/guest-entries'. 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-rw82-mhmx-grmj",
  "modified" : "2023-11-15T18:16:42Z",
  "published" : "2023-11-14T18:48:51Z",
  "aliases" : [ "CVE-2023-47621" ],
  "summary" : "Guest Entries Remote code execution via file uploads",
  "details" : "### Impact\nWhen using the file uploads feature, it was possible to upload PHP files.\n\n### Patches\nThe vulnerability is fixed in v3.1.2.",
  "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" : "duncanmcclean/guest-entries"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "3.1.2"
      } ]
    } ]
  }, {
    "package" : {
      "ecosystem" : "Packagist",
      "name" : "doublethreedigital/guest-entries"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "3.1.2"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "WEB",
    "url" : "https://github.com/duncanmcclean/guest-entries/security/advisories/GHSA-rw82-mhmx-grmj"
  }, {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2023-47621"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/duncanmcclean/guest-entries/commit/a8e17b4413bfbbc337a887761a6c858ef1ddb4da"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/duncanmcclean/guest-entries"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-434" ],
    "severity" : "HIGH",
    "github_reviewed" : true,
    "github_reviewed_at" : "2023-11-14T18:48:51Z",
    "nvd_published_at" : "2023-11-13T20:15:28Z"
  }
}