SB20260408167 - Resource exhaustion in PocketMine-MP

Description

This security bulletin contains information about 1 vulnerability.

1) Resource exhaustion (CVE-ID: N/A)

CWE-ID: CWE-400 - Resource exhaustion

CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green

The vulnerability allows a remote attacker to cause a denial of service.

The vulnerability exists due to uncontrolled resource consumption in LoginPacket clientData processing when handling unexpected properties in the clientData JWT body. A remote attacker can send a specially crafted LoginPacket containing a large or complex unknown property to cause a denial of service.

The issue can spam the log or console and may waste CPU time serializing the offending structure.

Remediation

Install update from vendor's website.

References

• https://github.com/pmmp/PocketMine-MP/security/advisories/GHSA-h6rj-3m53-887h
• https://github.com/advisories/GHSA-h6rj-3m53-887h