CVE-2014-9312 in Photo Gallery
Summary
by MITRE
Unrestricted File Upload vulnerability in Photo Gallery 1.2.5.
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Analysis
by VulDB Data Team • 06/23/2025
The CVE-2014-9312 vulnerability represents a critical unrestricted file upload flaw discovered in the Photo Gallery plugin version 1.2.5, which affects WordPress-based websites. This vulnerability stems from insufficient input validation and sanitization mechanisms within the file upload functionality, allowing authenticated attackers with contributor-level privileges or higher to bypass security restrictions. The flaw enables malicious actors to upload arbitrary files to the server, potentially including malicious scripts or executables that can be executed within the web context. This vulnerability directly violates the principle of least privilege and demonstrates poor input validation practices that are commonly associated with insecure file handling implementations.
The technical exploitation of this vulnerability occurs when an attacker uploads a malicious file through the photo gallery upload interface without proper file type checking or content validation. The vulnerable plugin fails to verify file extensions, MIME types, or file contents before storing uploaded files on the web server. Attackers can leverage this weakness by uploading web shells, malicious php files, or other executable content that can be accessed through the web server, thereby gaining remote code execution capabilities. This type of vulnerability is classified under CWE-434, which specifically addresses the improper restriction of uploads of executable code, and aligns with ATT&CK technique T1190 for gaining access through exploitation of a file upload vulnerability. The vulnerability essentially creates a backdoor that allows attackers to execute arbitrary commands on the target system, potentially leading to complete system compromise.
The operational impact of CVE-2014-9312 extends beyond simple unauthorized file uploads, as it provides attackers with persistent access to the compromised web application environment. Once an attacker successfully uploads malicious content, they can establish a foothold for further attacks, including data exfiltration, privilege escalation, and lateral movement within the network. The vulnerability can be exploited to install web shells that remain undetected for extended periods, enabling attackers to maintain persistence and continue their operations without detection. This type of vulnerability is particularly dangerous because it requires minimal privileges to exploit, often allowing attackers to gain access through low-privilege accounts that are commonly compromised through social engineering or credential theft. The vulnerability also impacts the integrity and availability of the affected system, as attackers can modify or delete existing files, potentially disrupting legitimate business operations.
Mitigation strategies for CVE-2014-9312 should focus on implementing multiple layers of defense to prevent unauthorized file uploads and limit the impact of successful exploitation attempts. Organizations should immediately update to the latest version of the Photo Gallery plugin where the vulnerability has been patched, as this represents the most effective immediate solution. Additionally, implementing strict file type validation, including whitelisting of allowed file extensions and MIME types, can prevent malicious file uploads. Server-side restrictions should include proper file permission settings, ensuring that uploaded files cannot be executed directly through the web server. Security measures should also include configuring web servers to prevent execution of files in upload directories and implementing Content Security Policy headers to limit file execution capabilities. Network monitoring and intrusion detection systems should be configured to detect unusual file upload patterns or attempts to access recently uploaded files. Regular security audits and vulnerability assessments should be conducted to identify similar vulnerabilities in other plugins or components of the web application stack. The remediation process should also include comprehensive logging of all file upload activities for forensic analysis and incident response purposes, ensuring that any suspicious activities can be quickly identified and investigated.