CVE-2007-4262 in Ez Photo Sales
Summary
by MITRE
Unrestricted file upload vulnerability in EZPhotoSales 1.9.3 and earlier allows remote authenticated administrators to upload and execute arbitrary PHP code under OnlineViewing/galleries/.
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Analysis
by VulDB Data Team • 07/21/2021
The vulnerability identified as CVE-2007-4262 represents a critical unrestricted file upload flaw in EZPhotoSales version 1.9.3 and earlier systems. This vulnerability specifically affects the OnlineViewing/galleries/ directory structure within the application, creating a pathway for remote authenticated administrators to bypass security controls and execute arbitrary PHP code on the target system. The flaw stems from insufficient input validation and sanitization mechanisms that fail to properly restrict file types allowed for upload operations.
The technical implementation of this vulnerability exploits the lack of proper file extension validation and content type checking within the file upload functionality. When authenticated administrators attempt to upload files through the OnlineViewing/galleries/ endpoint, the system does not adequately verify the file extensions or MIME types, allowing malicious actors to upload PHP shell scripts or other executable code. This weakness directly maps to CWE-434, which addresses the improper restriction of file uploads, and represents a classic example of insecure file handling practices that have been consistently documented in security literature for over a decade.
From an operational perspective, this vulnerability presents a severe risk to system integrity and data security. An authenticated administrator with access to the application can leverage this flaw to upload malicious PHP files that execute arbitrary commands on the server. The implications extend beyond simple code execution, as these uploaded files can be used to establish persistent backdoors, exfiltrate sensitive data, or further compromise the underlying infrastructure. The vulnerability affects not only the immediate application but also potentially the entire hosting environment, as the uploaded PHP code executes with the privileges of the web server process.
The attack vector requires an authenticated administrative account, which means that while the vulnerability is more accessible than those requiring anonymous access, it still represents a significant risk to organizations where administrative credentials might be compromised through social engineering, credential theft, or other attack vectors. This vulnerability aligns with ATT&CK technique T1190, which describes the exploitation of vulnerabilities in remote services, and T1059, which covers the execution of commands through various scripting languages. The impact assessment reveals that organizations using vulnerable versions of EZPhotoSales face potential data breaches, system compromise, and unauthorized access to sensitive user information stored within the photo gallery system.
Organizations should implement immediate mitigations including upgrading to patched versions of EZPhotoSales, implementing strict file type validation, and restricting file upload capabilities to only allow safe file extensions. Additional protective measures include implementing web application firewalls, conducting regular security assessments, and ensuring proper access controls and privilege management. The vulnerability demonstrates the critical importance of proper input validation and the principle of least privilege in web application security, as well as the necessity of following secure coding practices that prevent file upload vulnerabilities. Organizations should also consider implementing automated monitoring systems to detect unauthorized file uploads and establish incident response procedures to address potential exploitation attempts.