GHSA-42qm-8v8m-m78c: Pocketmine/pocketmine mp Remote Code Execution Vulnerability

MODERATE
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CVSS 5.3
CWE-400
Published
Advisory Summary

GHSA-42qm-8v8m-m78c is a MODERATE (CVSS 5.3) remote code execution vulnerability (CWE-400: Uncontrolled Resource Consumption) affecting Pocketmine/pocketmine mp libraries in the Packagist ecosystem. The issue involves pocketmine mp vulnerable to uncontrolled resource consumption via mismatched type of 'inventorytransactionpacket'. Remediation is available by upgrading affected packages to version 4.18.0-ALPHA2.

GHSA-42qm-8v8m-m78c at a Glance

CVE Identifier N/A
GHSA Identifier GHSA-42qm-8v8m-m78c
Severity MODERATE
CVSS v3.1 Base Score 5.3
CWE Classification CWE-400: Uncontrolled Resource Consumption
Affected Product Pocketmine/pocketmine mp
Package Ecosystem Packagist
Published Date
Last Updated

Security Impact

CVSS: 5.3

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:L).

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 Low (A:L)

How to Fix GHSA-42qm-8v8m-m78c

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: 4.18.0-ALPHA2 
Upgrade pocketmine/pocketmine-mp to 4.18.0-ALPHA2
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-42qm-8v8m-m78c, 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 4.18.0-ALPHA2), 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-400: Uncontrolled Resource Consumption, where the product does not properly control the allocation and maintenance of a limited resource. 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 A "mismatch" type `InventoryTransactionPacket` is sent by the client to request a resync of all currently open inventories. Since PocketMine-MP does not rate-limit these "mismatch" transactions, and the syncing of inventories is not deferred until, e.g. the end of the current tick, they can be used as a very cheap bandwidth multiplier by making the server send out many MB of data (network serialized inventory items can be very large, especially when dealing with large amounts of NBT). This is not currently known to have been exploited in the wild. ### Patches This problem was fixed in 4.18.0-ALPHA2 by ca6d51498f12427a947467da8fcad7811418e6cc alongside the introduction of the `ItemStackRequest` system implementation. ### Workarounds Plugins can handle `DataPacketReceiveEvent` for `InventoryTransactionPacket` and check if the type is `MismatchTransactionData`. If it is, apply some kind of rate limit (e.g. max 1 per tick).

GHSA-42qm-8v8m-m78c Affected Pocketmine/pocketmine mp Versions

1 component(s)
Fixed Versions:
4.18.0-ALPHA2
Product / Package Ecosystem Affected Versions Fixed Version
pocketmine/pocketmine-mp
 Packagist
< 4.18.0-ALPHA2
4.18.0-ALPHA2

References

GitHub Advisory / Wiki ADVISORY
https://github.com/pmmp/PocketMine-MP/security/advisories/GHSA-42qm-8v8m-m78c
Pocketmine/pocketmine mp Source Repository REPOSITORY
https://github.com/pmmp/PocketMine-MP
Pocketmine/pocketmine mp Source Repository REPOSITORY
https://github.com/pmmp/PocketMine-MP/blob/4.18.0-ALPHA2/changelogs/4.18-alpha.md#4180-ALPHA2

Frequently Asked Questions

What is GHSA-42qm-8v8m-m78c?
GHSA-42qm-8v8m-m78c is a security vulnerability in Pocketmine/pocketmine mp involving PocketMine MP vulnerable to uncontrolled resource consumption via mismatched type of 'InventoryTransactionPacket' under CWE-400: Uncontrolled Resource Consumption.
Which Pocketmine/pocketmine mp versions are affected?
Affected versions include releases prior to 4.18.0-ALPHA2 across affected packages: pocketmine/pocketmine-mp.
What version fixes GHSA-42qm-8v8m-m78c?
Upgrading to 4.18.0-ALPHA2 (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 4.18.0-ALPHA2. Upgrade your dependency to 4.18.0-ALPHA2 or later.
What is the CVSS score of GHSA-42qm-8v8m-m78c?
GHSA-42qm-8v8m-m78c has a CVSS v3.1 base score of 5.3 (MODERATE) with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L.
What CWE is associated with GHSA-42qm-8v8m-m78c?
GHSA-42qm-8v8m-m78c is classified under CWE-400: Uncontrolled Resource Consumption (The product does not properly control the allocation and maintenance of a limited resource.).
How can I check Packagist dependencies for GHSA-42qm-8v8m-m78c?
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-42qm-8v8m-m78c",
  "modified" : "2023-06-01T19:10:40Z",
  "published" : "2023-06-01T19:10:40Z",
  "aliases" : [ ],
  "summary" : "PocketMine MP vulnerable to uncontrolled resource consumption via mismatched type of 'InventoryTransactionPacket'",
  "details" : "### Impact\nA \"mismatch\" type `InventoryTransactionPacket` is sent by the client to request a resync of all currently open inventories.\n\nSince PocketMine-MP does not rate-limit these \"mismatch\" transactions, and the syncing of inventories is not deferred until, e.g. the end of the current tick, they can be used as a very cheap bandwidth multiplier by making the server send out many MB of data (network serialized inventory items can be very large, especially when dealing with large amounts of NBT).\n\nThis is not currently known to have been exploited in the wild.\n\n### Patches\nThis problem was fixed in 4.18.0-ALPHA2 by ca6d51498f12427a947467da8fcad7811418e6cc alongside the introduction of the `ItemStackRequest` system implementation.\n\n### Workarounds\nPlugins can handle `DataPacketReceiveEvent` for `InventoryTransactionPacket` and check if the type is `MismatchTransactionData`. If it is, apply some kind of rate limit (e.g. max 1 per tick).",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "Packagist",
      "name" : "pocketmine/pocketmine-mp"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "4.18.0-ALPHA2"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "WEB",
    "url" : "https://github.com/pmmp/PocketMine-MP/security/advisories/GHSA-42qm-8v8m-m78c"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/pmmp/PocketMine-MP"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/pmmp/PocketMine-MP/blob/4.18.0-ALPHA2/changelogs/4.18-alpha.md#4180-ALPHA2"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-400" ],
    "severity" : "MODERATE",
    "github_reviewed" : true,
    "github_reviewed_at" : "2023-06-01T19:10:40Z",
    "nvd_published_at" : null
  }
}