CVE-2009-4106 in Agoko CMS
Summary
by MITRE
Unrestricted file upload vulnerability in admintools/editpage-2.php in Agoko CMS 0.4 and earlier allows remote attackers to inject and execute arbitrary PHP code via the filename and text parameters.
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Analysis
by VulDB Data Team • 12/11/2024
The vulnerability identified as CVE-2009-4106 represents a critical unrestricted file upload flaw within the Agoko Content Management System version 0.4 and earlier. This vulnerability exists in the admintools/editpage-2.php component, which processes file upload operations without adequate validation mechanisms. The flaw specifically affects the handling of filename and text parameters, creating an avenue for remote attackers to bypass security controls and execute malicious code on the affected system. Such vulnerabilities fall under the category of CWE-434 Unrestricted Upload of File with Dangerous Type, which is classified as a high-risk security weakness in software applications.
The technical implementation of this vulnerability stems from insufficient input validation and sanitization within the file upload functionality. Attackers can manipulate the filename parameter to include malicious PHP code within the uploaded file, while the text parameter may be used to embed executable code directly into the uploaded content. The absence of proper file type checking, extension validation, and content verification allows arbitrary files to be uploaded and subsequently executed on the web server. This type of vulnerability enables attackers to gain unauthorized access to the system and potentially establish persistent backdoors for continued exploitation.
Operationally, this vulnerability poses severe risks to organizations using Agoko CMS versions 0.4 or earlier, as it provides remote code execution capabilities without requiring authentication. Attackers can leverage this flaw to upload web shells, malware, or other malicious payloads that can compromise the entire web infrastructure. The impact extends beyond immediate system compromise to include potential data breaches, service disruption, and lateral movement within network environments. This vulnerability aligns with ATT&CK technique T1190 Exploit Public-Facing Application, which targets applications accessible from external networks to establish initial access and execute malicious code.
Mitigation strategies for CVE-2009-4106 should prioritize immediate patching of the Agoko CMS to version 0.5 or later, which contains the necessary security fixes for this vulnerability. Organizations should implement comprehensive file upload validation mechanisms including strict file type filtering, extension whitelisting, and content scanning for malicious code patterns. Additionally, proper input sanitization should be enforced through parameterized queries and secure coding practices. The implementation of web application firewalls and intrusion detection systems can provide additional layers of protection against exploitation attempts. Security monitoring should include regular vulnerability assessments and penetration testing to identify similar weaknesses in other components of the web infrastructure. Organizations should also consider implementing principle of least privilege access controls and regular security audits to minimize the impact of potential exploitation.