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🛡️ GHSA-3qpm-h9ch-px3c — powernukkit (CVE-2021-44228 +1 more)

🔴 CVSS 9.5 — Critical ✅ No Known Exploit CWE-20 OSV
9.5
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

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](https://github.com/advisories/GHSA-jfh8-c2jp-5v3q) 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](https://github.com/PowerNukkit/PowerNukkit/issues)

How this vulnerability can be exploited

This issue can be reached over the network, attack complexity is low, an attacker needs no privileges on the target. No user interaction is required. The scope is changed, meaning a successful attack can affect components beyond the vulnerable one. Rated impact: confidentiality high, integrity high, availability high.

CVSS metrics in full

The score comes from this vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H

  • Attack vector: Network — reachable from anywhere that can route to the service.
  • Attack complexity: Low — the attack works reliably, with no preparation.
  • Privileges required: None — an unauthenticated stranger can try it.
  • User interaction: None — nobody has to be tricked into anything.
  • Scope: Changed — a successful attack reaches components beyond the vulnerable one.
  • Confidentiality impact: High — total loss, or loss the attacker controls.
  • Integrity impact: High — total loss, or loss the attacker controls.
  • Availability impact: High — total loss, or loss the attacker controls.

Weakness class

GHSA-3qpm-h9ch-px3c is classified as CWE-20: Improper Input Validation. The application accepts input without checking that it has the expected form, so malformed values reach code that assumes they are well formed.

Affected software

GHSA-3qpm-h9ch-px3c is recorded against 1 package.

  • org.powernukkit:powernukkit (fixed in 1.5.2.1)

Timeline and source

Published on 6 January 2022 and last revised on 4 December 2024. No public exploit is currently recorded for this entry. Record sourced from OSV.

References

github.com (Web)
github.com (Package)

Same weakness in other software

These advisories are the same class of weakness (CWE-20: Improper Input Validation) in other software:

Details

Severity CRITICAL
CVSS Score 9.5
CVSS Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
CWE CWE-20
Public Exploit ✅ No
Source OSV
Published 2022-01-06
Updated 2026-08-20
Modified 2024-12-04
Fix URL N/A

Affected Packages

Software From version Fixed in
org.powernukkit:powernukkit — 1.5.2.1

Exploit Protection

Are you running powernukkit?

GHSA-3qpm-h9ch-px3c carries CVSS 9.5 Critical rating. BotEraser checks your installation against this and other known CVE records, and blocks IPs associated with exploit activity.

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