GHSA-fm35-jgg3-3grx – pocketmine/pocketmine-mp

Package

Manager: composer
Name: pocketmine/pocketmine-mp
Vulnerable Version: >=0 <3.18.1

Severity

Level: High

CVSS v3.1: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N

EPSS: N/A pctlN/A

Details

NaN/INF in serverbound movement packets can crash clients and servers ### Impact A malicious client may send a `MovePlayerPacket` to the server whose position or rotation contains NaN or INF. Since neither the server nor vanilla client handles this properly, a number of interesting side effects come into play. - The server may crash in various ways if this exploit is used, because some mathematical operations on NaN/INF generate PHP warnings, which are converted into exceptions. - Clients may not be able to see other clients who have a NaN/INF rotation. - Clients may also crash in such cases. ### Patches A patch for this was included in the 3.18.1 release: https://github.com/pmmp/PocketMine-MP/commit/fb20bb38327b4c08ee3976640cd0dd547388a638 ### Workarounds Workarounds could be implemented as plugins using `DataPacketReceiveEvent` to block any inbound movement packets containing bogus values. ### For more information If you have any questions or comments about this advisory: - Open an issue in [pmmp/PocketMine-MP](https://github.com/pmmp/PocketMine-MP) - Email us at [team@pmmp.io](mailto:team@pmmp.io)

Metadata

Created: 2022-03-18T17:54:38Z
Modified: 2022-03-18T17:54:38Z
Source: https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2022/03/GHSA-fm35-jgg3-3grx/GHSA-fm35-jgg3-3grx.json
CWE IDs: ["CWE-20"]
Alternative ID: N/A
Finding: F184
Auto approve: 1