GHSA-xh99-hw7h-wf63

    Dashboard / Vulnerabilities / GHSA-xh99-hw7h-wf63

    GHSA-xh99-hw7h-wf63

    Published: 13 Jan 2022Last Modified: 8 Sept 2026

    Summary: Unchecked validity of Facing values in PlayerActionPacket

    Details: ### Impact A remote attacker may crash a server by sending `PlayerActionPacket` with invalid facing values (e.g. negative), specifically with `START_BREAK` or `CRACK_BLOCK` actions, or with a `UseItemTransactionData` (typically in `InventoryTransactionPacket`). ### Patches f126479c37ff00a717a828f5271cf8e821d12d6c ### Workarounds Using a plugin, cancel `DataPacketReceiveEvent` if the packet is `PlayerActionPacket` and the facing is outside the range 0-5 when receiving START_BREAK or CRACK_BLOCK actions, or UseItemTransactionData. However, beware that negative values may be legitimate in some cases. ### For more information If you have any questions or comments about this advisory: * Email us at [[email protected]](mailto:[email protected])

    References: https://github.com/pmmp/PocketMine-MP/security/advisories/GHSA-xh99-hw7h-wf63, https://github.com/pmmp/PocketMine-MP/commit/f126479c37ff00a717a828f5271cf8e821d12d6c, https://github.com/pmmp/PocketMine-MP

    Affected packages

    Package

    Name: pocketmine/pocketmine-mp

    Purl: pkg:composer/pocketmine/pocketmine-mp

    Affected ranges

    Type: ECOSYSTEM

    Events:

    Introduced- 0
    Fixed -4.0.6

    Affected versions

    3.0.0
    3.0.1
    3.0.10
    3.0.11
    3.0.12
    3.0.2
    3.0.3
    3.0.4
    3.0.5
    3.0.6
    3.0.7
    3.0.8
    3.0.9

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High
    GHSA-xh99-hw7h-wf63 | CVE-DB