GHSA-wjfq-88q2-r34j

Source

https://github.com/advisories/GHSA-wjfq-88q2-r34j

Import Source

https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2022/01/GHSA-wjfq-88q2-r34j/GHSA-wjfq-88q2-r34j.json

JSON Data

https://api.osv.dev/v1/vulns/GHSA-wjfq-88q2-r34j

Published

2022-01-21T23:02:14Z

Modified

2025-12-26T17:43:38.982935Z

Severity

7.5 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H CVSS Calculator

Summary

Unhandled exception when decoding form response JSON

Details

Impact

When handling form responses from the client (ModalFormResponsePacket), the Minecraft Windows client may send weird JSON that json_decode() can't understand. A workaround for this is implemented in InGamePacketHandler::stupid_json_decode().

An InvalidArgumentException is thrown by this function when it fails to fix an error found in the JSON, which is not caught by the caller. This leads to a server crash.

Patches

56fe71d939c38fe14e18a31a673a9331bcc0e4ca

Workarounds

A plugin may handle DataPacketReceiveEvent, capture ModalFormResponsePacket and run the provided JSON through stupid_json_decode.

Note that this requires copying the body of the function to a plugin, since the function is currently private.

For more information

If you have any questions or comments about this advisory: * Email us at team@pmmp.io

Database specific

{
    "nvd_published_at": null,
    "cwe_ids": [],
    "github_reviewed_at": "2022-01-21T21:16:09Z",
    "severity": "HIGH",
    "github_reviewed": true
}

References

Affected packages

Packagist / pocketmine/pocketmine-mp

Package

Name: pocketmine/pocketmine-mp
Purl: pkg:composer/pocketmine/pocketmine-mp

Affected ranges

Type: ECOSYSTEM
Events: Introduced

4.0.0

Fixed

4.0.7

Affected versions

4.*

4.0.0

4.0.1

4.0.2

4.0.3

4.0.4

4.0.5

4.0.6

Database specific

source

"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2022/01/GHSA-wjfq-88q2-r34j/GHSA-wjfq-88q2-r34j.json"