CVE-2014-9000 in Mule Enterprise Management Console
Summary
by MITRE
Mule Enterprise Management Console (MMC) does not properly restrict access to handler/securityService.rpc, which allows remote authenticated users to gain administrator privileges and execute arbitrary code via a crafted request that adds a new user. NOTE: this issue was originally reported for ESB Runtime 3.5.1, but it originates in MMC.
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Analysis
by VulDB Data Team • 10/18/2024
The vulnerability identified as CVE-2014-9000 affects the Mule Enterprise Management Console (MMC) and represents a critical access control flaw that undermines the security posture of Mule ESB environments. This issue stems from improper access restrictions within the MMC's security service endpoint, specifically the handler/securityService.rpc interface. The vulnerability exists in the ESB Runtime version 3.5.1 but originates from the MMC component, making it a systemic concern for organizations utilizing Mule's management capabilities. The flaw allows authenticated attackers to escalate their privileges from standard user level to administrative privileges, creating a severe privilege escalation vector that can compromise entire Mule deployments.
The technical mechanism behind this vulnerability involves a flaw in the authorization checks implemented within the security service RPC handler. When an authenticated user sends a specially crafted request to the handler/securityService.rpc endpoint, the system fails to properly validate whether the requesting user possesses the necessary administrative permissions to add new users. This validation gap enables attackers to manipulate the system's user management functionality and create new administrative accounts. The vulnerability is particularly dangerous because it operates at the RPC layer where administrative operations are typically protected by strict access controls, yet the MMC fails to enforce these protections correctly.
The operational impact of CVE-2014-9000 extends far beyond simple privilege escalation, as it provides attackers with complete administrative control over the Mule environment. Once an attacker gains administrative privileges through this vulnerability, they can execute arbitrary code, modify system configurations, access sensitive data, and potentially compromise the entire Mule infrastructure. This vulnerability directly maps to CWE-285 (Improper Authorization) and CWE-798 (Use of Hard-coded Credentials) categories, representing a fundamental failure in access control implementation. The attack surface is particularly concerning for organizations running Mule ESB in production environments where the MMC is exposed to network traffic, as it allows attackers to establish persistent administrative access without requiring additional credentials or complex exploitation techniques.
Organizations affected by this vulnerability should immediately implement mitigations focusing on network segmentation and access control enforcement. The most effective immediate measure involves restricting network access to the MMC interface to trusted administrative networks only, implementing strict firewall rules, and ensuring that the MMC is not exposed to untrusted networks. Additionally, organizations should consider disabling the MMC interface entirely if it is not actively required for management operations, as this eliminates the attack surface entirely. The vulnerability also highlights the importance of regular security assessments and proper input validation in RPC services, aligning with ATT&CK techniques that emphasize privilege escalation and persistence mechanisms. Organizations should also consider implementing network monitoring to detect anomalous RPC traffic patterns that might indicate exploitation attempts, as the vulnerability can be exploited through simple authenticated requests that do not require complex payloads or multi-stage attacks.