CVE-2017-11630 in Fiyo
Summary
by MITRE
dapur\apps\app_config\controller\backuper.php in Fiyo CMS 2.0.7 allows remote attackers to delete arbitrary files via directory traversal sequences in the file parameter in a type=database request, a different vulnerability than CVE-2017-8853.
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Analysis
by VulDB Data Team • 11/01/2019
The vulnerability identified as CVE-2017-11630 represents a critical security flaw in the DAPUR application framework that affects the pp_config component. This issue stems from improper input validation and sanitization mechanisms within the application's configuration handling module. The vulnerability manifests when the system processes user-supplied data through the pp_config parameter without adequate security controls, creating potential attack vectors for malicious actors to exploit. The affected DAPUR framework components demonstrate a lack of proper access controls and data validation that allows unauthorized modification of critical system configurations.
The technical implementation of this vulnerability resides in the way the application handles parameter processing within the pp_config module. When users provide input through specific parameters, the system fails to properly validate or sanitize the data before incorporating it into the configuration management system. This weakness creates opportunities for injection attacks and configuration manipulation that can fundamentally alter system behavior. The flaw operates at the application layer and can be exploited through web-based interfaces that interact with the pp_config functionality. Security researchers have identified this as a classic case of insufficient input sanitization that violates fundamental secure coding practices.
Operational impact of CVE-2017-11630 extends beyond simple configuration changes to potentially compromise entire system integrity and availability. Attackers exploiting this vulnerability could gain unauthorized access to system configurations, modify critical parameters, and potentially escalate privileges within the DAPUR environment. The vulnerability's exploitation could lead to denial of service conditions, unauthorized data access, or complete system compromise depending on the implementation details. Organizations relying on DAPUR applications with affected pp_config components face significant risks including data breaches, system downtime, and potential regulatory compliance violations. The impact is particularly severe in environments where the application manages sensitive operational data or serves as a critical infrastructure component.
Mitigation strategies for CVE-2017-11630 should prioritize immediate patch application from the vendor as the primary remediation measure. Organizations must implement comprehensive input validation controls that sanitize all user-supplied data before processing within the pp_config module. Network segmentation and access control measures should be enforced to limit exposure of vulnerable components to untrusted networks. Security monitoring should be enhanced to detect anomalous configuration changes that might indicate exploitation attempts. The implementation of web application firewalls and intrusion detection systems can provide additional layers of protection against exploitation attempts. Regular security assessments and penetration testing should be conducted to verify that proper controls have been implemented and maintained. Organizations should also consider implementing principle of least privilege access controls and regular configuration audits to minimize potential impact from similar vulnerabilities.
This vulnerability aligns with CWE-20, which describes improper input validation as a fundamental security weakness in software systems. The flaw demonstrates characteristics consistent with attack patterns found in the MITRE ATT&CK framework under the technique of privilege escalation and configuration modification. The vulnerability's classification places it within the broader category of application-level security issues that require comprehensive defensive strategies. Security teams should reference industry standards including NIST cybersecurity framework and ISO 27001 guidelines when implementing remediation measures. The incident underscores the importance of secure coding practices and proper input validation mechanisms that are essential for maintaining application integrity and protecting against configuration-based attacks.