CVE Vulnerability

CVE-2021-39177

Geyser is a bridge between Minecraft: Bedrock Edition and Minecraft: Java Edition. Versions of Geyser prior to 1.4.2-SNAPSHOT allow anyone that can connect to the server to forge a LoginPacket with manipulated JWT token allowing impersonation as any user. Version 1.4.2-SNAPSHOT contains a patch for the issue. There are no known workarounds aside from upgrading.

7.5 /10

CVSS v2.0 :

V3 Legend

Vector :

Exploitability : 10 / Impact : 6.4

Attack Vector

Attack Complexity

Privileges Required

User Interaction

Confidentiality Impact PARTIAL

Integrity Impact PARTIAL

Availability Impact PARTIAL

Scope

9.8 /10

CVSS v3.0 : CRITICAL

V3 Legend

Vector :

Exploitability : 3.9 / Impact : 5.9

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References
Link Resource
https://github.com/GeyserMC/Geyser/security/advisories/GHSA-h77f-xxx7-4858 Patch Third Party Advisory
https://github.com/GeyserMC/Geyser/commit/b9541505af68ac7b7c093206ac7b1ba88957a5a6 Patch Third Party Advisory
https://updates.playhive.com/weekend-maintenance-disclosure-2kJMaY Third Party Advisory
Configurations

Configuration 1

cpe:2.3:a:geysermc:geyser:*:*:*:*:*:*:*:*
Information

Published : 2021-08-30 11:15

Updated : 2021-09-10 02:30

NVD link : CVE-2021-39177

Mitre link : CVE-2021-39177

Products Affected
No products.
CWE
CWE-287