CVE-2013-3590 in SearchBlox
Summary
by MITRE
Unrestricted file upload vulnerability in admin/uploadImage.html in SearchBlox before 7.5 build 1 allows remote attackers to execute arbitrary code by uploading an executable file with the image/jpeg content type, and then accessing this file via unspecified vectors, as demonstrated by access to a JSP file.
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Analysis
by VulDB Data Team • 08/15/2024
The CVE-2013-3590 vulnerability represents a critical unrestricted file upload flaw in SearchBlox software versions prior to 7.5 build 1. This vulnerability exists within the administrative upload functionality at admin/uploadImage.html, where the application fails to properly validate file types and content, creating an avenue for remote code execution. The flaw specifically allows attackers to bypass normal file validation mechanisms by uploading executable files disguised with legitimate image/jpeg content types, exploiting the application's trust in MIME type headers without proper file content verification.
The technical implementation of this vulnerability stems from inadequate input validation and sanitization within the file upload process. When attackers upload files through the admin interface, the system relies heavily on the Content-Type header sent by the client rather than performing thorough file content analysis. This approach creates a fundamental security gap where malicious files can be uploaded with misleading MIME types, enabling attackers to execute arbitrary code on the target system. The vulnerability operates under CWE-434 which specifically addresses unrestricted upload of files with dangerous types, making it a direct implementation of this well-known security weakness.
The operational impact of this vulnerability is severe and multifaceted, as it provides attackers with remote code execution capabilities on the affected SearchBlox server. Once an attacker successfully uploads a malicious file, they can access the uploaded file through unspecified vectors, potentially leading to complete system compromise. The demonstration of this vulnerability using JSP files highlights the risk of server-side script execution, which could allow attackers to gain persistent access, escalate privileges, or deploy additional malicious payloads. This vulnerability directly maps to attack techniques in the MITRE ATT&CK framework under T1190 for Exploit Public-Facing Application and T1059 for Command and Scripting Interpreter, representing a significant threat to enterprise search infrastructure security.
Mitigation strategies for CVE-2013-3590 must address both the immediate vulnerability and broader security practices. Organizations should immediately upgrade to SearchBlox version 7.5 build 1 or later, which includes proper file validation mechanisms. Additionally, implementing robust file type validation that checks both MIME headers and actual file content through magic number detection is essential. The system should enforce strict file extension filtering, reject executable file types, and implement proper file naming conventions to prevent directory traversal attacks. Security measures should also include restricting upload directories to non-executable locations, implementing proper access controls for uploaded files, and monitoring file upload activities for suspicious patterns. Network-level protections such as web application firewalls can provide additional layers of defense, while regular security audits of upload functionalities help identify similar vulnerabilities in other applications.