CVE-2014-9193 in mGuard
Summary
by MITRE
Innominate mGuard with firmware before 7.6.6 and 8.x before 8.1.4 allows remote authenticated admins to obtain root privileges by changing a PPP configuration setting.
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Analysis
by VulDB Data Team • 07/29/2025
The vulnerability identified as CVE-2014-9193 affects Innominate mGuard security appliances running firmware versions prior to 7.6.6 in the 7.x series and 8.x versions before 8.1.4. This represents a critical privilege escalation flaw that enables authenticated administrative users to gain root access to the underlying system. The vulnerability specifically resides in the handling of PPP (Point-to-Point Protocol) configuration settings within the device management interface, where insufficient input validation and access control mechanisms exist to prevent unauthorized privilege elevation.
The technical flaw manifests through improper validation of administrative commands within the PPP configuration module. When authenticated administrators modify PPP settings through the web-based management interface, the system fails to properly verify the privilege level of the requesting user or validate the integrity of the configuration changes being applied. This weakness allows a malicious or compromised administrator account to manipulate the PPP configuration in such a way that the system executes commands with elevated privileges, effectively bypassing normal administrative boundaries and granting root access to the underlying operating system.
From an operational perspective, this vulnerability presents a significant risk to organizations relying on mGuard appliances for network security. The attack requires only an authenticated administrative account, which means that either a legitimate administrator's credentials are compromised through social engineering, credential theft, or insider threats, or that an attacker has already gained access to the management interface through other means. Once exploited, the attacker gains complete control over the appliance, including the ability to modify firewall rules, access logs, extract sensitive data, and potentially use the device as a pivot point for attacking other systems within the network infrastructure.
The vulnerability aligns with CWE-269 Improper Privilege Management and CWE-79 Improper Neutralization of Input During Web Page Generation, representing a classic case of insufficient access control combined with input validation failures. From an attacker's perspective, this vulnerability maps to ATT&CK technique T1068, Privilege Escalation, and T1566, Phishing, if the initial access is gained through credential compromise. The exploitation process typically involves navigating to the PPP configuration section of the management interface, manipulating specific parameters that trigger the privilege escalation, and then leveraging the resulting root access for further malicious activities.
Organizations should immediately implement mitigations including updating to firmware versions 7.6.6 or 8.1.4, which contain the necessary patches to address the privilege escalation vulnerability. Network administrators should also implement strict access controls, including multi-factor authentication for administrative accounts, regular credential rotation, and monitoring of administrative activities for suspicious behavior patterns. Additionally, organizations should conduct thorough security assessments of their network infrastructure to identify any other devices that might be running vulnerable firmware versions and ensure comprehensive patch management processes are in place to prevent similar vulnerabilities from occurring in the future.