CVE-2024-6107 in MAAS
Summary
by MITRE • 07/21/2025
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.
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Analysis
by VulDB Data Team • 08/27/2025
The vulnerability identified as CVE-2024-6107 represents a critical authentication bypass flaw within the MAAS (Metal as a Service) infrastructure management platform. This issue stems from inadequate input validation and verification mechanisms that fail to properly authenticate client requests before processing remote procedure calls. The flaw specifically affects the RPC command execution functionality, allowing malicious actors to exploit weak authentication controls and gain unauthorized access to system resources within designated regions. The vulnerability exists in the communication layer between client applications and the MAAS server, where insufficient verification procedures enable attackers to craft malicious requests that circumvent standard authentication protocols.
The technical implementation of this vulnerability leverages weaknesses in the authentication flow where client credentials and request integrity are not adequately validated before RPC command processing begins. Attackers can construct specially crafted client requests that appear legitimate to the system but contain malicious payloads designed to bypass authentication checks. This allows unauthorized execution of RPC commands within the target region, potentially enabling full system compromise. The flaw demonstrates characteristics consistent with CWE-287 Improper Authentication, where the system fails to properly verify the identity of requesting entities before granting access to privileged operations. The vulnerability affects the core RPC infrastructure of MAAS, making it particularly dangerous as it can be exploited to execute arbitrary commands with elevated privileges.
The operational impact of CVE-2024-6107 extends beyond simple unauthorized access, as it creates a persistent threat vector that can be exploited to compromise entire regional infrastructure deployments. Attackers can leverage this vulnerability to execute commands on behalf of authenticated users, potentially leading to data exfiltration, system modification, or complete infrastructure takeover. The vulnerability's presence in the snap package updates indicates that it affects deployed systems where MAAS is installed via snap packaging, which is common in modern Linux distributions. This creates a widespread risk across various deployment scenarios where MAAS serves as the primary infrastructure management solution for bare metal environments.
Security professionals should implement immediate mitigations including applying the patched snap updates provided by Canonical, which address the authentication verification gaps in the RPC handling components. Network segmentation and monitoring should be enhanced to detect anomalous RPC command patterns that may indicate exploitation attempts. The vulnerability aligns with ATT&CK technique T1078 Valid Accounts, where attackers leverage legitimate credentials to gain access to systems, though in this case the authentication bypass creates a more direct path to command execution. Organizations should also consider implementing additional authentication layers and monitoring for unauthorized RPC command execution, particularly in regions where MAAS is deployed. The fix included in the updated snaps addresses the root cause by strengthening the verification process and ensuring that all RPC commands are properly authenticated before execution, thereby preventing the bypass condition that previously allowed malicious clients to operate within the system.