CVE-2017-5154 in WebAccess
Summary
by MITRE
An issue was discovered in Advantech WebAccess Version 8.1. To be able to exploit the SQL injection vulnerability, an attacker must supply malformed input to the WebAccess software. Successful attack could result in administrative access to the application and its data files.
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Analysis
by VulDB Data Team • 08/14/2020
The CVE-2017-5154 vulnerability represents a critical SQL injection flaw in Advantech WebAccess version 8.1, a widely deployed industrial automation and SCADA software platform. This vulnerability resides in the web-based interface component of the software, which serves as the primary entry point for system administration and monitoring functions. The flaw allows malicious actors to inject arbitrary SQL commands through improperly validated input parameters, potentially compromising the entire industrial control system infrastructure. The vulnerability is particularly concerning given Advantech WebAccess's prevalence in critical infrastructure sectors including manufacturing, energy, and water treatment facilities where operational technology systems require robust security controls.
The technical implementation of this SQL injection vulnerability stems from inadequate input validation mechanisms within the WebAccess web application. When users submit data through web forms or API endpoints, the software fails to properly sanitize or escape user-supplied input before incorporating it into database queries. This allows attackers to craft malicious input strings that manipulate the underlying SQL execution flow, potentially bypassing authentication mechanisms and gaining unauthorized access to the database layer. The vulnerability specifically affects the authentication and authorization processes, enabling attackers to escalate privileges from regular user accounts to administrative levels without proper credentials. This weakness aligns with CWE-89, which categorizes SQL injection vulnerabilities as a fundamental flaw in input validation and database interaction protocols.
The operational impact of this vulnerability extends far beyond simple data theft, as successful exploitation provides attackers with complete administrative control over the WebAccess application and its associated data repositories. An attacker who successfully exploits this vulnerability can access sensitive operational data, modify critical system configurations, manipulate industrial processes, and potentially cause physical damage to industrial equipment. The attack surface is particularly dangerous because WebAccess systems often serve as central management points for entire industrial facilities, making this vulnerability a potential gateway for broader system compromise. The implications align with ATT&CK technique T1190, which describes the exploitation of remote services to gain access to systems, and T1078, which covers legitimate credentials use for persistence and privilege escalation.
Organizations affected by CVE-2017-5154 should implement immediate mitigation strategies including applying the vendor-provided security patches, implementing network segmentation to isolate WebAccess systems, and deploying web application firewalls to monitor and filter suspicious SQL injection attempts. Additional protective measures include disabling unnecessary web interfaces, implementing strict access controls, and conducting comprehensive security assessments of all industrial control system components. The vulnerability highlights the critical importance of secure coding practices in industrial software development and demonstrates the need for regular security testing of operational technology systems. Organizations should also consider implementing intrusion detection systems specifically designed to identify SQL injection attacks and establish incident response procedures for dealing with potential exploitation attempts. This vulnerability serves as a reminder of the ongoing security challenges in industrial environments where legacy systems often contain unpatched security flaws that can be exploited by sophisticated attackers.