CVE-2007-2073 in Ivan Gallery Script
Summary
by MITRE
PHP remote file inclusion vulnerability in index.php in Ivan Gallery Script 0.3 allows remote attackers to execute arbitrary PHP code via a URL in the gallery parameter in a new session.
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Analysis
by VulDB Data Team • 10/19/2017
The vulnerability identified as CVE-2007-2073 represents a critical remote file inclusion flaw in the Ivan Gallery Script version 0.3, specifically affecting the index.php file. This vulnerability operates within the broader context of web application security where improper input validation creates pathways for malicious actors to execute arbitrary code on vulnerable systems. The flaw stems from the application's failure to properly sanitize user-supplied input parameters, particularly the gallery parameter that is processed during new session creation. This issue falls under the category of insecure direct object references and improper input validation, which are fundamental weaknesses that have persisted across numerous web applications over the years.
The technical implementation of this vulnerability occurs when the application accepts user input through the gallery parameter without adequate sanitization or validation before incorporating it into file inclusion operations. When an attacker crafts a malicious URL and passes it through the gallery parameter, the script processes this input directly without proper verification, allowing the attacker to specify external URLs that contain malicious PHP code. The vulnerability leverages the PHP include or require functions that accept dynamic file paths, creating an opportunity for attackers to inject remote code execution payloads. This pattern aligns with CWE-98, which specifically addresses improper file inclusion vulnerabilities, and demonstrates how parameter manipulation can lead to complete system compromise.
The operational impact of CVE-2007-2073 is severe and far-reaching, as successful exploitation grants attackers complete control over the vulnerable web server. An attacker can execute arbitrary PHP code with the privileges of the web server process, potentially leading to data breaches, system compromise, and further lateral movement within the network infrastructure. The vulnerability affects not just the specific gallery functionality but can serve as a foothold for more extensive attacks, making it particularly dangerous in environments where the web server has elevated privileges. This type of vulnerability also enables attackers to establish persistent backdoors, exfiltrate sensitive data, or deploy additional malicious payloads, creating cascading security risks throughout the affected system landscape.
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 techniques, ensuring that all user-supplied parameters are thoroughly validated before being used in file inclusion operations. Developers should employ allowlists of acceptable values rather than denylists, and implement proper parameter encoding to prevent injection attacks. Additionally, the application should be configured to disable remote file inclusion features in PHP settings, using functions like open_basedir restrictions and disabling remote URL inclusion in php.ini. Organizations should also implement proper web application firewalls and intrusion detection systems to monitor for suspicious parameter patterns. This vulnerability highlights the importance of following secure coding practices and adheres to ATT&CK technique T1190 for exploitation of remote services, emphasizing the need for comprehensive security controls across all system layers.