Unchecked validity of Facing values in PlayerActionPacket
Key facts
- Attack vector
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- Privileges required
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- User interaction
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- Attack complexity
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- Impact type
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- Confidentiality · integrity · availability
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- Fix status
- Fixed
No CVSS vector from any source. Fix status from GitHub.
Summary
### 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])
Why it matters now
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | pocketmine/pocketmine-mp (Packagist) | before 4.0.6 | 4.0.6 | Patch available | GHSA-xh99-hw7h-wf63 |
- pocketmine/pocketmine-mp (Packagist) Vendor— Affected before 4.0.6 Fixed in 4.0.6 Patch available GHSA-xh99-hw7h-wf63
Remediation
- Fix · GHSA-xh99-hw7h-wf63 pocketmine/pocketmine-mp (Packagist) Fixed in 4.0.6 Advisory →
Timeline
- 2026-10-03 Threatist record created from GHSA-xh99-hw7h-wf63
References
Sources
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences