CVE-2025-3744 in Nomad Enterprise
Summary
by MITRE • 05/13/2025
Nomad Enterprise (“Nomad”) jobs using the policy override option are bypassing the mandatory sentinel policies. This vulnerability, identified as CVE-2025-3744, is fixed in Nomad Enterprise 1.10.1, 1.9.9, and 1.8.13.
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Analysis
by VulDB Data Team • 05/14/2025
The vulnerability described in CVE-2025-3744 represents a critical authorization bypass issue within Nomad Enterprise's policy enforcement mechanisms. This flaw specifically affects enterprise deployments where administrators configure jobs with the policy override option, creating a scenario where mandatory sentinel policies can be circumvented entirely. The issue stems from an improper validation mechanism that fails to properly enforce security controls when job policies are explicitly overridden, allowing potentially malicious or unauthorized operations to proceed without the required policy checks that should be mandatory for all job executions.
Nomad Enterprise systems implement sentinel policies as a core security control mechanism to enforce organizational governance and compliance requirements across job deployments. These policies serve as mandatory checkpoints that validate job configurations against predefined security rules and organizational standards. When the policy override option is enabled, administrators can explicitly bypass these checks, but the vulnerability demonstrates that this override functionality has been improperly implemented, allowing attackers to exploit the mechanism to completely bypass mandatory policies regardless of whether they have explicit override permissions. This represents a fundamental failure in the principle of least privilege and mandatory access controls.
The operational impact of CVE-2025-3744 extends beyond simple policy bypass to potentially enable unauthorized system access and privilege escalation within enterprise environments. Attackers who can manipulate job configurations to exploit this vulnerability could execute jobs that would normally be blocked by sentinel policies, potentially allowing for the deployment of malicious code, unauthorized resource consumption, or violation of compliance requirements. The vulnerability particularly affects organizations that rely on Nomad Enterprise for containerized workloads and orchestration, where the bypass could lead to unauthorized access to sensitive data, privilege escalation, or system compromise. This issue directly impacts the integrity and security posture of enterprise deployments that depend on Nomad's policy enforcement capabilities.
Security controls for this vulnerability align with several established frameworks including CWE-693 which addresses protection mechanism failures, and ATT&CK techniques related to privilege escalation and defense evasion. Organizations should implement immediate mitigations including upgrading to the fixed versions of Nomad Enterprise 1.10.1, 1.9.9, or 1.8.13 as specified in the advisory. Additional defensive measures include reviewing all job configurations that utilize the policy override option to ensure they are properly audited and validated, implementing network segmentation to limit access to Nomad Enterprise systems, and establishing comprehensive monitoring for unauthorized policy bypass attempts. The vulnerability highlights the importance of proper access control implementation and demonstrates how seemingly legitimate override mechanisms can become security risks when not properly validated against mandatory security requirements. Organizations should also consider implementing additional layers of security monitoring to detect anomalous job execution patterns that might indicate exploitation attempts.