GHSA-8cwq-4cmf-px73: Pocketmine/pocketmine mp PocketMine-MP Invalid Skin Geometry JSON Vulnerability

HIGH
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CVSS 7.5
Published
Advisory Summary

GHSA-8cwq-4cmf-px73 is a HIGH (CVSS 7.5) pocketmine-mp invalid skin geometry json vulnerability (General Security Weakness) affecting Pocketmine/pocketmine mp libraries in the Packagist ecosystem. The issue involves pocketmine-mp invalid skin geometry json data leading to server crash. Remediation is available by upgrading affected packages to version 4.7.2.

GHSA-8cwq-4cmf-px73 at a Glance

CVE Identifier N/A
GHSA Identifier GHSA-8cwq-4cmf-px73
Severity HIGH
CVSS v3.1 Base Score 7.5
CWE Classification General Security Weakness
Affected Product Pocketmine/pocketmine mp
Package Ecosystem Packagist
Published Date
Last Updated

Security Impact

CVSS: 7.5

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:N/I:N/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 None (C:N)
Integrity None (I:N)
Availability High (A:H)

How to Fix GHSA-8cwq-4cmf-px73

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

pocketmine/pocketmine-mp fixed: 4.7.2 
Upgrade pocketmine/pocketmine-mp to 4.7.2
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 pocketmine/pocketmine-mp

How to Check if You Are Affected

To determine whether your application is affected by GHSA-8cwq-4cmf-px73, inspect your project dependencies for Pocketmine/pocketmine mp:

inspect dependencies for pocketmine/pocketmine-mp

Analyze the terminal output to locate any version of Pocketmine/pocketmine mp in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 4.7.2), 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 General Security Weakness. In Pocketmine/pocketmine mp, 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 `pocketmine\entity\Skin` doesn't correctly handle errors produced by `adhocore/json-comment`, which throws `RuntimeException` rather than returning `false` as PocketMine-MP expects. This leads to a server crash if the skin geometry data is invalid for some reason (e.g. a syntax error). ### Patches c9626c610b8f6810c8c987559c9197b2a291f0bb ### Workarounds A plugin could handle `LoginPacket` and `PlayerSkinPacket` to verify the skin geometry data can be parsed correctly, so that the error condition in the core code is never reached. ### For more information If you have any questions or comments about this advisory: * Email us at [security@pmmp.io](mailto:security@example.com)

GHSA-8cwq-4cmf-px73 Affected Pocketmine/pocketmine mp Versions

1 component(s)
Fixed Versions:
4.7.2
Product / Package Ecosystem Affected Versions Fixed Version
pocketmine/pocketmine-mp
 Packagist
< 4.7.2
4.7.2

References

GitHub Advisory / Wiki ADVISORY
https://github.com/pmmp/PocketMine-MP/security/advisories/GHSA-8cwq-4cmf-px73
Security Fix Commit FIX COMMIT
https://github.com/pmmp/PocketMine-MP/commit/c9626c610b8f6810c8c987559c9197b2a291f0bb
Pocketmine/pocketmine mp Source Repository REPOSITORY
https://github.com/pmmp/PocketMine-MP

Frequently Asked Questions

What is GHSA-8cwq-4cmf-px73?
GHSA-8cwq-4cmf-px73 is a security vulnerability in Pocketmine/pocketmine mp involving PocketMine-MP invalid skin geometry JSON data leading to server crash under General Security Weakness.
Which Pocketmine/pocketmine mp versions are affected?
Affected versions include releases prior to 4.7.2 across affected packages: pocketmine/pocketmine-mp.
What version fixes GHSA-8cwq-4cmf-px73?
Upgrading to 4.7.2 (or the latest patched release for your respective branch) resolves the vulnerability.
Is pocketmine/pocketmine-mp affected?
Yes, pocketmine/pocketmine-mp is affected in releases prior to 4.7.2. Upgrade your dependency to 4.7.2 or later.
What is the CVSS score of GHSA-8cwq-4cmf-px73?
GHSA-8cwq-4cmf-px73 has a CVSS v3.1 base score of 7.5 (HIGH) with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.
What CWE is associated with GHSA-8cwq-4cmf-px73?
GHSA-8cwq-4cmf-px73 is classified under General Security Weakness.
How can I check Packagist dependencies for GHSA-8cwq-4cmf-px73?
Run the dependency tree command: 'inspect dependencies for pocketmine/pocketmine-mp'. 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-8cwq-4cmf-px73",
  "modified" : "2022-08-18T19:19:21Z",
  "published" : "2022-08-18T19:19:21Z",
  "aliases" : [ ],
  "summary" : "PocketMine-MP invalid skin geometry JSON data leading to server crash",
  "details" : "### Impact\n`pocketmine\\entity\\Skin` doesn't correctly handle errors produced by `adhocore/json-comment`, which throws `RuntimeException` rather than returning `false` as PocketMine-MP expects.\n\nThis leads to a server crash if the skin geometry data is invalid for some reason (e.g. a syntax error).\n\n### Patches\nc9626c610b8f6810c8c987559c9197b2a291f0bb\n\n### Workarounds\nA plugin could handle `LoginPacket` and `PlayerSkinPacket` to verify the skin geometry data can be parsed correctly, so that the error condition in the core code is never reached.\n\n### For more information\nIf you have any questions or comments about this advisory:\n* Email us at [security@pmmp.io](mailto:security@example.com)\n",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "Packagist",
      "name" : "pocketmine/pocketmine-mp"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "4.7.2"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "WEB",
    "url" : "https://github.com/pmmp/PocketMine-MP/security/advisories/GHSA-8cwq-4cmf-px73"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/pmmp/PocketMine-MP/commit/c9626c610b8f6810c8c987559c9197b2a291f0bb"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/pmmp/PocketMine-MP"
  } ],
  "database_specific" : {
    "cwe_ids" : [ ],
    "severity" : "HIGH",
    "github_reviewed" : true,
    "github_reviewed_at" : "2022-08-18T19:19:21Z",
    "nvd_published_at" : null
  }
}