CVE-2018-14828 in WebAccess
Summary
by MITRE
Advantech WebAccess 8.3.1 and earlier has an improper privilege management vulnerability, which may allow an attacker to access those files and perform actions at a system administrator level.
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Analysis
by VulDB Data Team • 05/30/2023
The vulnerability identified as CVE-2018-14828 resides within Advantech WebAccess version 8.3.1 and earlier implementations, representing a critical improper privilege management flaw that fundamentally undermines the security posture of industrial automation and monitoring systems. This weakness specifically affects the authentication and authorization mechanisms that govern user access controls, creating a pathway for unauthorized individuals to escalate their privileges and assume administrative roles within the system. The vulnerability stems from inadequate validation of user permissions and insufficient enforcement of access control policies that should normally restrict file access and system operations to authorized personnel only.
The technical implementation of this privilege management flaw allows an attacker to bypass normal authentication procedures and gain elevated system privileges through various attack vectors including but not limited to session manipulation, credential theft, or exploitation of misconfigured access control lists. When an attacker successfully exploits this vulnerability, they can execute arbitrary commands with full administrative privileges, effectively granting them complete control over the WebAccess system and potentially the entire industrial network infrastructure it manages. This represents a severe deviation from the principle of least privilege and demonstrates a fundamental failure in the application's security architecture.
The operational impact of CVE-2018-14828 extends far beyond simple unauthorized access, as it enables attackers to perform critical system administration functions including but not limited to modifying configuration files, creating or modifying user accounts, accessing sensitive operational data, and potentially disrupting industrial processes. This vulnerability particularly affects industrial control systems where WebAccess serves as a supervisory control and data acquisition platform, making it a prime target for adversaries seeking to compromise critical infrastructure operations. The implications are especially grave in environments where operational technology and information technology converge, as this vulnerability could enable attackers to move laterally within network environments and potentially cause significant operational disruptions.
From a cybersecurity framework perspective, this vulnerability aligns with CWE-285, which addresses improper authorization issues, and maps to ATT&CK techniques including privilege escalation and credential access. The attack surface is particularly concerning given that Advantech WebAccess is commonly deployed in manufacturing, energy, and other critical infrastructure sectors where maintaining operational integrity and security is paramount. Organizations should implement immediate mitigations including applying the latest vendor patches, enforcing strict access control policies, monitoring for unauthorized privilege escalation attempts, and conducting comprehensive security assessments of their industrial control system environments. Additionally, network segmentation and multi-factor authentication mechanisms should be deployed to reduce the attack surface and limit the potential impact of such privilege escalation vulnerabilities.