Advisories

Universal-modder before e88f687 Cross-Site WebSocket Command Execution via HostLink

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Severity
high
Date
Affecting
  • universal-modder >= 0, < e88f6876745427321eb755ebc98276063a962d8a

CWE
  • CWE-1385 Missing Origin Validation in WebSockets
CVSS
7.2
CVSS V4 Vector
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:H/VA:H/SC:N/SI:N/SA:N
Credit
George Chen
Description
Universal-modder before commit e88f6876745427321eb755ebc98276063a962d8a contains a missing WebSocket Origin validation vulnerability in the HostLink class of its passthrough example mods that allows remote attackers to execute Minecraft commands. Any web page open in the player's browser can connect cross-site to the unauthenticated loopback WebSocket and send cmd messages that WorldBridge.command() runs with operator authority.

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