Ecosyste.ms: Advisories
An open API service providing security vulnerability metadata for many open source software ecosystems.
Security Advisories: MDE2OlNlY3VyaXR5QWR2aXNvcnlHSFNBLThqcTYtdzVjZy13bTQ1
Exploitable inventory component chaining in PocketMine-MP
Impact
Specially crafted InventoryTransactionPacket
s sent by malicious clients were able to exploit the behaviour of InventoryTransaction->findResultItem()
and cause it to take an abnormally long time to execute (causing an apparent server freeze).
The affected code is intended to compact conflicting InventoryActions
which are in the same InventoryTransaction
by flattening them into a single action. When multiple pathways to a result existed, the complexity of this flattening became exponential.
The problem was fixed by bailing when ambiguities are detected.
At the time of writing, this exploit is being used in the wild by attackers to deny service to servers.
Patches
Upgrade to 3.15.4 or newer.
Workarounds
No practical workarounds are possible, short of backporting the fix or implementing checks in a plugin listening to DataPacketReceiveEvent
.
References
c368ebb5e74632bc622534b37cd1447b97281e20
For more information
If you have any questions or comments about this advisory:
- Email us at [email protected]
JSON: https://advisories.ecosyste.ms/api/v1/advisories/MDE2OlNlY3VyaXR5QWR2aXNvcnlHSFNBLThqcTYtdzVjZy13bTQ1
Source: GitHub Advisory Database
Origin: Unspecified
Severity: High
Classification: General
Published: over 3 years ago
Updated: over 1 year ago
Identifiers: GHSA-8jq6-w5cg-wm45
References:
- https://github.com/pmmp/PocketMine-MP/security/advisories/GHSA-8jq6-w5cg-wm45
- https://github.com/advisories/GHSA-8jq6-w5cg-wm45
Blast Radius: 0.0
Affected Packages
packagist:pocketmine/pocketmine-mp
Dependent packages: 52Dependent repositories: 120
Downloads: 53,716 total
Affected Version Ranges: < 3.15.4
Fixed in: 3.15.4
All affected versions: 3.0.0, 3.0.1, 3.0.2, 3.0.3, 3.0.4, 3.0.5, 3.0.6, 3.0.7, 3.0.8, 3.0.9, 3.0.10, 3.0.11, 3.0.12, 3.1.0, 3.1.1, 3.1.2, 3.1.3, 3.1.4, 3.1.5, 3.1.6, 3.1.7, 3.1.8, 3.2.0, 3.2.1, 3.2.2, 3.2.3, 3.2.4, 3.2.5, 3.2.6, 3.2.7, 3.3.0, 3.3.1, 3.3.2, 3.3.3, 3.3.4, 3.4.0, 3.4.1, 3.4.2, 3.4.3, 3.5.0, 3.5.1, 3.5.2, 3.5.3, 3.5.4, 3.5.5, 3.5.6, 3.5.7, 3.5.8, 3.5.9, 3.5.10, 3.5.11, 3.5.12, 3.5.13, 3.6.0, 3.6.1, 3.6.2, 3.6.3, 3.6.4, 3.6.5, 3.6.6, 3.7.0, 3.7.1, 3.7.2, 3.7.3, 3.8.0, 3.8.1, 3.8.2, 3.8.3, 3.8.4, 3.8.5, 3.8.6, 3.8.7, 3.9.0, 3.9.1, 3.9.2, 3.9.3, 3.9.4, 3.9.5, 3.9.6, 3.9.7, 3.9.8, 3.10.0, 3.10.1, 3.11.0, 3.11.1, 3.11.2, 3.11.3, 3.11.4, 3.11.5, 3.11.6, 3.11.7, 3.12.0, 3.12.1, 3.12.2, 3.12.3, 3.12.4, 3.12.5, 3.12.6, 3.13.0, 3.13.1, 3.14.0, 3.14.1, 3.14.2, 3.14.3, 3.15.0, 3.15.1, 3.15.2, 3.15.3
All unaffected versions: 3.15.4, 3.16.0, 3.16.1, 3.17.0, 3.17.1, 3.17.2, 3.17.3, 3.17.4, 3.17.5, 3.17.6, 3.17.7, 3.18.0, 3.18.1, 3.18.2, 3.19.0, 3.19.1, 3.19.2, 3.19.3, 3.20.0, 3.21.0, 3.21.1, 3.22.0, 3.22.1, 3.22.2, 3.22.3, 3.22.4, 3.22.5, 3.23.0, 3.23.1, 3.24.0, 3.25.0, 3.25.1, 3.25.2, 3.25.3, 3.25.4, 3.25.5, 3.25.6, 3.26.0, 3.26.1, 3.26.2, 3.26.3, 3.26.4, 3.26.5, 3.27.0, 3.28.0, 4.0.0, 4.0.1, 4.0.2, 4.0.3, 4.0.4, 4.0.5, 4.0.6, 4.0.7, 4.0.8, 4.0.9, 4.1.0, 4.2.0, 4.2.1, 4.2.2, 4.2.3, 4.2.4, 4.2.5, 4.2.6, 4.2.7, 4.2.8, 4.2.9, 4.2.10, 4.3.0, 4.3.1, 4.3.2, 4.3.3, 4.3.4, 4.4.0, 4.4.1, 4.4.2, 4.5.0, 4.5.1, 4.5.2, 4.6.0, 4.6.1, 4.6.2, 4.7.0, 4.7.1, 4.7.2, 4.7.3, 4.8.0, 4.8.1, 4.9.0, 4.9.1, 4.10.0, 4.10.1, 4.10.2, 4.11.0, 4.12.0, 4.12.1, 4.12.2, 4.12.3, 4.12.4, 4.12.5, 4.12.6, 4.12.7, 4.12.8, 4.12.9, 4.12.10, 4.12.11, 4.13.0, 4.14.0, 4.14.1, 4.15.0, 4.15.1, 4.15.2, 4.15.3, 4.16.0, 4.17.0, 4.17.1, 4.17.2, 4.18.0, 4.18.1, 4.18.2, 4.18.3, 4.18.4, 4.19.0, 4.19.1, 4.19.2, 4.19.3, 4.20.0, 4.20.1, 4.20.2, 4.20.3, 4.20.4, 4.20.5, 4.21.0, 4.21.1, 4.22.0, 4.22.1, 4.22.2, 4.22.3, 4.23.0, 4.23.1, 4.23.2, 4.23.3, 4.23.4, 4.23.5, 4.23.6, 4.24.0, 4.25.0, 4.26.0, 5.0.0, 5.0.1, 5.1.0, 5.1.1, 5.1.2, 5.1.3, 5.2.0, 5.2.1, 5.3.0, 5.3.1, 5.3.2, 5.3.3, 5.3.4, 5.4.0, 5.4.1, 5.4.2, 5.4.3, 5.4.4, 5.5.0, 5.6.0, 5.6.1, 5.7.0, 5.7.1, 5.8.0, 5.8.1, 5.8.2, 5.9.0, 5.10.0, 5.11.0, 5.11.1, 5.11.2, 5.12.0, 5.12.1, 5.13.0, 5.14.0, 5.14.1