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Advisories

PocketMine-MP before 4.22.3 Denial of Service via BlockActorDataPacket

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severity
high
date
Affecting

  • PocketMine-MP

CWE
  • CWE-20 Improper Input Validation
CVSS
7.1
CVSS V4 Vector
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
Credit
ShockedPlot7560, dktapps
Description
PocketMine-MP versions >= 4.20.0 before 4.22.3 (and before 5.2.1 in the 5.x branch) fail to validate NBT tag types in BlockActorDataPacket. A player can crash the server by sending a packet containing sign NBT data with an incorrect tag type, triggering an unhandled UnexpectedTagTypeException that terminates the server process.

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