CVE-2006-7113 in P-News
Summary
by MITRE
Unrestricted file upload vulnerability in P-News 2.0 allows remote attackers to upload and execute arbitrary files via an avatar file. NOTE: the provenance of this information is unknown; the details are obtained solely from third party information.
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Analysis
by VulDB Data Team • 08/26/2018
The vulnerability identified as CVE-2006-7113 represents a critical security flaw in P-News 2.0 software that enables remote attackers to perform unrestricted file uploads. This vulnerability specifically targets the avatar file upload functionality within the application, creating a pathway for malicious actors to bypass normal security controls and execute arbitrary code on the affected system. The issue stems from inadequate input validation and sanitization mechanisms that fail to properly restrict file types and content during the upload process, allowing attackers to submit potentially harmful files without proper authorization.
This technical flaw aligns with CWE-434, which describes the weakness of unrestricted upload of file with dangerous type, where applications fail to validate or restrict the types of files that can be uploaded by users. The vulnerability creates a significant attack surface that can be exploited through various vectors including web interfaces, API endpoints, or any user-facing upload mechanisms within the application. The absence of proper file type checking, content validation, and execution restrictions allows attackers to upload files with extensions such as .php, .asp, .jsp, or other executable formats that can be executed within the web server context. The vulnerability's classification places it within the broader category of insecure file upload vulnerabilities that have been consistently identified as high-risk threats in cybersecurity assessments.
The operational impact of this vulnerability extends far beyond simple unauthorized file uploads, as it provides attackers with potential full system compromise capabilities. Once an attacker successfully uploads a malicious file, they can execute arbitrary code on the target system, potentially gaining administrative privileges, accessing sensitive data, or using the compromised system as a launching point for further attacks within the network infrastructure. This vulnerability can lead to complete system takeover, data breaches, and persistent backdoor access that may remain undetected for extended periods. The risk is particularly elevated in environments where the web application runs with elevated privileges or has access to sensitive databases and system resources, as demonstrated by ATT&CK technique T1190 which covers the exploitation of vulnerabilities in web applications to gain initial access.
Mitigation strategies for CVE-2006-7113 must address both immediate remediation and long-term security improvements. Organizations should implement strict file type validation by maintaining allowlists of approved extensions and rejecting all others, while also performing content inspection to ensure uploaded files do not contain malicious code. The application should store uploaded files outside the web root directory and ensure proper file permissions are enforced to prevent execution of uploaded content. Network-based protections such as web application firewalls can help detect and block suspicious upload attempts, while regular security audits and penetration testing should be conducted to identify similar vulnerabilities in other components. Additionally, implementing proper input validation, output encoding, and secure coding practices can prevent similar issues from occurring in future development cycles, as outlined in industry standards such as OWASP Top Ten and NIST cybersecurity frameworks that emphasize the importance of secure file handling mechanisms.