SB2022010432 - Multiple vulnerabilities in PocketMine-MP

Description

This security bulletin contains information about 2 secuirty vulnerabilities.

1) Improper input validation (CVE-ID: N/A)

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

The vulnerability exists due to improper input validation in skin data fields when processing player-supplied skin data. A remote attacker can submit oversized skin fields to cause a denial of service.

The server crashes when saving player data if affected string fields exceed the 32767-byte limit for TAG_String values.

2) Improper input validation (CVE-ID: N/A)

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

The vulnerability exists due to improper input validation in book page text, page count, and author/title fields when processing edited book data. A remote user can submit a crafted writable book to cause a denial of service.

Exploitation requires obtaining a writable book.

Remediation

Install update from vendor's website.

References

• https://github.com/pmmp/PocketMine-MP/security/advisories/GHSA-c6fg-99pr-25m9
• https://github.com/advisories/GHSA-c6fg-99pr-25m9
• https://github.com/pmmp/PocketMine-MP/security/advisories/GHSA-p62j-hrxm-xcxf