SB2021121662 - Improper access control in PocketMine-MP

Description

This security bulletin contains information about 1 vulnerability.

1) Improper access control (CVE-ID: N/A)

CWE-ID: CWE-284 - Improper Access Control

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

The vulnerability allows a local user to disclose sensitive information.

The vulnerability exists due to improper access control in operator status handling when processing de-op commands against entries in ops.txt with non-lowercase letters. A local user can add their name to ops.txt with uppercase letters to disclose sensitive information.

The issue can make a player impossible to de-op using commands because operator checks match names case-insensitively while removal does not.

Remediation

Install update from vendor's website.

References

• https://github.com/pmmp/PocketMine-MP/security/advisories/GHSA-j5qg-w9jg-3wg3
• https://github.com/advisories/GHSA-j5qg-w9jg-3wg3