CVE-2007-2068 in StoreFront
Summary
by MITRE
Multiple PHP remote file inclusion vulnerabilities in the StoreFront mods for Gallery allow remote attackers to execute arbitrary PHP code via a URL in the GALLERY_BASEDIR parameter to (1) mods/business_functions.php or (2) mods/ui_functions.php.
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Analysis
by VulDB Data Team • 09/06/2024
The vulnerability identified as CVE-2007-2068 represents a critical remote file inclusion flaw within the StoreFront mods for Gallery software ecosystem. This vulnerability specifically affects two key files within the application's modular architecture namely mods/business_functions.php and mods/ui_functions.php. The flaw stems from insufficient input validation and sanitization mechanisms that fail to properly restrict user-supplied data from being directly incorporated into file inclusion operations. Attackers can exploit this weakness by manipulating the GALLERY_BASEDIR parameter to inject malicious URLs that point to remote servers hosting arbitrary PHP code.
The technical nature of this vulnerability aligns with CWE-88, which describes improper neutralization of special elements used in an expression, specifically in the context of remote file inclusion attacks. The flaw operates at the application level where user-controllable input directly influences the file inclusion process without adequate sanitization or validation. When the application processes the GALLERY_BASEDIR parameter, it accepts the provided URL value and attempts to include the specified file, creating a pathway for remote code execution. This vulnerability falls under the ATT&CK technique T1190 - Exploit Public-Facing Application, as it targets publicly accessible web applications that process user input through file inclusion mechanisms.
The operational impact of this vulnerability is severe and far-reaching within the affected environment. Successful exploitation allows remote attackers to execute arbitrary PHP code on the vulnerable server with the privileges of the web application process. This capability enables attackers to gain full control over the affected system, potentially leading to data breaches, system compromise, and further lateral movement within the network. The vulnerability affects installations where the StoreFront mods for Gallery are deployed, particularly those that do not properly validate or sanitize user input before processing file inclusion requests. The remote nature of the attack means that exploitation can occur from anywhere on the internet without requiring physical access or prior authentication to the target system.
Mitigation strategies for this vulnerability must address both immediate remediation and long-term security hardening measures. The primary fix involves implementing proper input validation and sanitization for all user-supplied parameters that influence file inclusion operations. This includes validating the GALLERY_BASEDIR parameter to ensure it contains only expected values and rejecting any input that appears to reference external URLs or includes suspicious characters. Organizations should also implement the principle of least privilege by restricting the web application's ability to include files from external sources. Additionally, disabling remote file inclusion capabilities entirely through php.ini configuration settings and implementing proper access controls around the affected files can significantly reduce the attack surface. Regular security assessments and code reviews should be conducted to identify similar patterns in other parts of the application that might present analogous vulnerabilities. The remediation process should also include updating to patched versions of the StoreFront mods for Gallery software where available, and implementing web application firewalls to detect and block malicious requests attempting to exploit this vulnerability.