CVE-2024-6107

CriticalPublic PoC

Published: 21 July 2025

Published

21 July 2025

Modified

27 August 2025

KEV Added

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Patch

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CVSS Score 9.6 CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:H/I:L/A:H

EPSS Score 0.0012 30.5th percentile

Risk Priority 19 60% EPSS · 20% KEV · 20% CVSS

Summary

CVE-2024-6107 is a critical-severity Improper Authentication (CWE-287) vulnerability in Canonical Metal As A Service. Its CVSS base score is 9.6 (Critical).

Operationally, exploitation aligns with the MITRE ATT&CK technique Exploitation of Remote Services (T1210); ranked at the 30.5th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog; a public proof-of-concept is referenced.

The strongest mitigations our analysis identified are NIST 800-53 AC-3 (Access Enforcement) and IA-3 (Device Identification and Authentication).

Threat & Defense at a Glance

What attackers do: exploitation maps to Exploitation of Remote Services (T1210). What defenders deploy: see the NIST 800-53 controls recommended below.

Threat & Defense Details

Mitigating Controls (NIST 800-53 r5)AI

AC-3 Access Enforcement good match

prevent

Enforces approved authorizations and authentication checks to prevent malicious clients from bypassing verification and executing unauthorized RPC commands.

IA-3 Device Identification and Authentication good match

prevent

Requires identification and authentication of clients or devices prior to allowing RPC command execution, directly countering the insufficient client verification.

SI-2 Flaw Remediation good match

prevent

Mandates timely remediation of flaws like this authentication bypass through software updates, as addressed in MAAS patches.

MITRE ATT&CK Enterprise TechniquesAI

T1210 Exploitation of Remote Services Lateral Movement

Adversaries may exploit remote services to gain unauthorized access to internal systems once inside of a network.

attack.mitre.org →

Why these techniques?

Authentication bypass (CWE-287) directly enables exploitation of the MAAS region RPC service by an unauthenticated adjacent-network attacker to execute arbitrary commands.

Confidence: HIGH · MITRE ATT&CK Enterprise v18.1

NVD Description

Due to insufficient verification, an attacker could use a malicious client to bypass authentication checks and run RPC commands in a region. This has been addressed in MAAS and updated in the corresponding snaps.

Deeper analysisAI

CVE-2024-6107 is a critical authentication bypass vulnerability (CWE-287) in MAAS (Metal-as-a-Service), stemming from insufficient verification of clients. It allows a malicious client to evade authentication checks and execute RPC commands within a region. The issue carries a CVSS v3.1 base score of 9.6 (AV:A/AC:L/PR:N/UI:N/S:C/C:H/I:L/A:H), indicating high severity due to its potential for significant confidentiality and availability impacts alongside a scope change.

An adjacent network attacker (AV:A) with no privileges (PR:N) can exploit this vulnerability with low complexity (AC:L) and no user interaction (UI:N). Successful exploitation enables the attacker to run arbitrary RPC commands in a MAAS region, potentially leading to high confidentiality loss (C:H), high availability disruption (A:H), and low integrity compromise (I:L).

The vulnerability has been addressed in updated versions of MAAS and the corresponding snaps. Additional details are available in the Launchpad bug report at https://bugs.launchpad.net/maas/+bug/2069094.