SB2022041979 - Improper input validation in PocketMine-MP

Description

This security bulletin contains information about 1 vulnerability.

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

CWE-ID: CWE-20 - Improper input validation

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 improper input validation in item NBT deserialization for inventory transactions when processing serialized network item data. A remote attacker can send specially crafted inventory transaction data containing bogus NBT to cause a denial of service.

The issue can be triggered during inventory interactions when the server deserializes client-supplied item stack data and compares it with its own copy.

Remediation

Install update from vendor's website.

References

• https://github.com/pmmp/PocketMine-MP/security/advisories/GHSA-g5rr-p69h-7v3g
• https://github.com/advisories/GHSA-g5rr-p69h-7v3g