CVE-2021-39177
7.4
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N
Summary
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.
Affected Software
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| GeyserMC | Geyser | <= 1.4.1-SNAPSHOT | affected |
Weaknesses
- CWE-287: CWE-287: Improper Authentication
ADP Enrichment
CVE Program Container
Additional References
- https://github.com/GeyserMC/Geyser/security/advisories/GHSA-h77f-xxx7-4858
- https://github.com/GeyserMC/Geyser/commit/b9541505af68ac7b7c093206ac7b1ba88957a5a6
- https://updates.playhive.com/weekend-maintenance-disclosure-2kJMaY
References
- https://github.com/GeyserMC/Geyser/security/advisories/GHSA-h77f-xxx7-4858
- https://github.com/GeyserMC/Geyser/commit/b9541505af68ac7b7c093206ac7b1ba88957a5a6
- https://updates.playhive.com/weekend-maintenance-disclosure-2kJMaY
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