PocketMine-MP before 5.11.1 contains a denial of service vulnerability in LoginPacket JSON processing that allows remote attackers to crash the server by sending malformed JSON data. Attackers can exploit improper object initialization from scalar JSON types to trigger unset required properties, causing the application to crash.
Attack Parameters
Attack Vector
Network
Can be exploited remotely
Attack Complexity
Low
Easy to exploit
Attack Requirements
None
No additional conditions
Privileges Required
None
No privileges needed
User Interaction
None
No user interaction needed
Impact Assessment
Confidentiality
None
No data leak
Integrity
None
No data modification
Availability
High
Complete denial of service
CVSS Vector v4.0
Weakness Type (CWE)
References 4
https://github.com/pmmp/PocketMine-MP/commit/6872661fd03649cc7a8762c41c16e9ee5a…
disclosure@vulncheck.com
https://github.com/pmmp/PocketMine-MP/commit/b96a209f9e8b76b899a0d0918493cd87eb…
disclosure@vulncheck.com
https://github.com/pmmp/PocketMine-MP/security/advisories/GHSA-h6j3-j35f-v2x7
disclosure@vulncheck.com
https://www.vulncheck.com/advisories/pocketmine-mp-before-5.11.1-denial-of-serv…
disclosure@vulncheck.com