← Back to CVEs

CVE-2021-39177

HIGH

7.4

Description

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.

CVE Details

CVSS v3.1 Score7.4

SeverityHIGH

CVSS VectorCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N

Attack VectorNETWORK

ComplexityHIGH

Privileges RequiredNONE

User InteractionNONE

Published8/30/2021

Last Modified11/21/2024

Sourcenvd

Honeypot Sightings0

Affected Products

geysermc:geyser

Weaknesses (CWE)

CWE-287

References

https://github.com/GeyserMC/Geyser/commit/b9541505af68ac7b7c093206ac7b1ba88957a5a6(security-advisories@github.com)

https://github.com/GeyserMC/Geyser/security/advisories/GHSA-h77f-xxx7-4858(security-advisories@github.com)

https://updates.playhive.com/weekend-maintenance-disclosure-2kJMaY(security-advisories@github.com)

https://github.com/GeyserMC/Geyser/commit/b9541505af68ac7b7c093206ac7b1ba88957a5a6(af854a3a-2127-422b-91ae-364da2661108)

https://github.com/GeyserMC/Geyser/security/advisories/GHSA-h77f-xxx7-4858(af854a3a-2127-422b-91ae-364da2661108)

https://updates.playhive.com/weekend-maintenance-disclosure-2kJMaY(af854a3a-2127-422b-91ae-364da2661108)

IOC Correlations

No correlations recorded

This product uses data from the NVD API but is not endorsed or certified by the NVD.