Ecosyste.ms: Advisories

Security Advisories: GSA_kwCzR0hTQS0zcXBtLWg5Y2gtcHgzY80gtg

Remote code injection, Improper Input Validation and Uncontrolled Recursion in Log4j library

Summary

The version used of Log4j, the library used for logging by PowerNukkit, is subject to a remote code execution vulnerability via the ldap JNDI parser.
It's well detailed at CVE-2021-44228 and CVE-2021-45105(https://github.com/advisories/GHSA-p6xc-xr62-6r2g).

Impact

Malicious client code could be used to send messages and cause remote code execution on the server.

Patches

PowerNukkit 1.5.2.1 is a patch-release that only updates the Log4j version to 2.17.0 and should be used instead of 1.5.2.0.
All versions prior to 1.5.2.1 are affected and are not patched.

Workarounds

If you can't upgrade, you can use the -Dlog4j2.formatMsgNoLookups=true startup argument as remediation, as this prevents the vulnerability from happening.

References

https://github.com/advisories/GHSA-jfh8-c2jp-5v3q
https://github.com/advisories/GHSA-p6xc-xr62-6r2g

For more information

If you have any questions or comments about this advisory:

• Open an issue in the PowerNukkit repository

Permalink: https://github.com/advisories/GHSA-3qpm-h9ch-px3c
JSON: https://advisories.ecosyste.ms/api/v1/advisories/GSA_kwCzR0hTQS0zcXBtLWg5Y2gtcHgzY80gtg
Source: GitHub Advisory Database
Origin: Unspecified
Severity: Critical
Classification: General
Published: over 2 years ago
Updated: over 1 year ago

CVSS Score: 10.0
CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H

Identifiers: GHSA-3qpm-h9ch-px3c
References:

• https://github.com/PowerNukkit/PowerNukkit/security/advisories/GHSA-3qpm-h9ch-px3c
• https://github.com/advisories/GHSA-3qpm-h9ch-px3c

Repository: https://github.com/PowerNukkit/PowerNukkit
Blast Radius: 12.6

Affected Packages