CVE-2017-12694 in SCADA Web Server
Summary
by MITRE
A Directory Traversal issue was discovered in SpiderControl SCADA Web Server. An attacker may be able to use a simple GET request to perform a directory traversal into system files.
If you want to get the best quality for vulnerability data then you always have to consider VulDB.
Analysis
by VulDB Data Team • 11/10/2019
The vulnerability identified as CVE-2017-12694 represents a critical directory traversal flaw within the SpiderControl SCADA Web Server implementation. This weakness allows unauthorized attackers to manipulate HTTP GET requests and gain access to sensitive system files that should remain protected from external inspection. The vulnerability stems from insufficient input validation and improper handling of file path references within the web server's request processing logic. When a malicious user submits a crafted request containing directory traversal sequences such as ../ or ..\, the server fails to properly sanitize these inputs, enabling access to files outside the intended web root directory. This issue specifically affects industrial control systems that rely on SpiderControl for web-based management interfaces, creating potential exposure points in critical infrastructure environments where SCADA systems operate. The flaw exists at the application layer and can be exploited through standard web protocols without requiring special privileges or authentication credentials, making it particularly dangerous in operational technology environments where system integrity is paramount.
The technical exploitation of this vulnerability demonstrates a classic path traversal attack pattern that aligns with CWE-22, which specifically addresses improper limitation of a pathname to a restricted directory. The vulnerability occurs because the web server application does not adequately validate or sanitize user-supplied input before using it to construct file paths. Attackers can leverage this weakness by crafting HTTP requests that include directory traversal sequences in the requested resource path, allowing them to navigate the filesystem hierarchy and potentially access configuration files, log files, executable binaries, or other sensitive system components. The impact extends beyond simple information disclosure, as access to system files may enable attackers to gather intelligence about the target environment, potentially leading to further exploitation opportunities or system compromise. This vulnerability is particularly concerning in SCADA environments where the integrity and confidentiality of system files are critical for operational security and safety protocols.
The operational impact of CVE-2017-12694 in industrial control systems poses significant risks to both cybersecurity and operational technology environments. In SCADA deployments, this vulnerability could enable attackers to access sensitive operational data, system configurations, or even manipulate critical system parameters through the exposure of underlying system files. The attack surface is particularly wide in environments where multiple systems are managed through the SpiderControl web interface, as a successful traversal attack could potentially reveal network topology information, authentication credentials stored in configuration files, or other sensitive operational data. From an attacker perspective, this vulnerability aligns with techniques described in the MITRE ATT&CK framework under the T1083 - File and Directory Discovery tactic, as it enables reconnaissance activities that can reveal system structure and sensitive file locations. The vulnerability's exploitation requires minimal technical skill, making it attractive to threat actors who may seek to gain initial access or escalate privileges within industrial control environments.
Mitigation strategies for this vulnerability should focus on immediate patching of affected SpiderControl SCADA Web Server installations, as vendors typically provide security updates to address such directory traversal issues. Network segmentation and firewall rules should be implemented to restrict access to the affected web server, limiting exposure to only trusted administrative networks. Input validation should be strengthened at the application level to properly sanitize all user-supplied data, particularly URL parameters and file path references. Implementing proper access controls and authentication mechanisms can further reduce the risk of exploitation, ensuring that only authorized personnel can access the web management interface. Regular security audits and penetration testing of industrial control systems should be conducted to identify similar vulnerabilities in other components of the operational technology infrastructure. Additionally, implementing web application firewalls and intrusion detection systems can help monitor for and block suspicious directory traversal attempts, providing an additional layer of protection for critical infrastructure environments where SCADA systems operate. Organizations should also consider implementing network monitoring solutions that can detect anomalous access patterns to web server resources, as this vulnerability may be used as a reconnaissance tool before more sophisticated attacks are launched.