CVE-2007-0881 in OPENi-CMS
Summary
by MITRE
PHP remote file inclusion vulnerability in the Seitenschutz plugin for OPENi-CMS 1.0 allows remote attackers to execute arbitrary PHP code via a URL in the (1) config[oi_dir] and possibly (2) config[openi_dir] parameters to open-admin/plugins/site_protection/index.php. NOTE: vector 2 might be the same as CVE-2006-4750.
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Analysis
by VulDB Data Team • 08/22/2024
The CVE-2007-0881 vulnerability represents a critical remote file inclusion flaw within the Seitenschutz plugin for OPENi-CMS 1.0, exposing systems to arbitrary code execution attacks. This vulnerability specifically targets the plugin's handling of user-supplied input parameters, creating an exploitable condition that allows malicious actors to inject and execute arbitrary PHP code on the target server. The flaw exists in the open-admin/plugins/site_protection/index.php file where the application fails to properly validate or sanitize input passed through the config[oi_dir] and config[openi_dir] parameters, making it susceptible to remote code execution through carefully crafted malicious URLs.
The technical implementation of this vulnerability aligns with common remote file inclusion patterns documented in CWE-88 and CWE-94, where insufficient input validation leads to code injection opportunities. The vulnerability operates by allowing attackers to manipulate the oi_dir and openi_dir configuration parameters to reference external malicious URLs, which then get included and executed by the PHP interpreter. This creates a direct pathway for attackers to execute arbitrary commands on the affected system, potentially leading to complete compromise of the web server and underlying infrastructure. The attack vector specifically targets the plugin's configuration handling mechanism, where user input directly influences the file inclusion process without adequate sanitization or validation.
The operational impact of this vulnerability extends beyond simple code execution, as it provides attackers with persistent access to the compromised system and enables further reconnaissance activities. Once exploited, attackers can establish backdoors, escalate privileges, and potentially move laterally within the network infrastructure. The vulnerability's classification as a remote code execution flaw means that no authentication is required for exploitation, making it particularly dangerous in environments where the CMS is publicly accessible. The potential for data exfiltration, system compromise, and service disruption makes this vulnerability a significant threat to web application security and aligns with ATT&CK technique T1190 for exploitation of remote services.
Mitigation strategies for this vulnerability should include immediate patching of the OPENi-CMS 1.0 installation and the Seitenschutz plugin to address the input validation deficiencies. Administrators should implement proper input sanitization measures, including the use of allowlists for parameter values and strict validation of all user-supplied input. Network-level defenses such as web application firewalls and intrusion prevention systems can help detect and block malicious requests attempting to exploit this vulnerability. Additionally, disabling unnecessary plugin functionality and implementing proper access controls can reduce the attack surface. The vulnerability's similarity to CVE-2006-4750 suggests that organizations should conduct comprehensive audits of their plugin installations and ensure all third-party components are regularly updated to address known security flaws. System administrators should also implement monitoring solutions to detect unusual file inclusion patterns and unauthorized access attempts to plugin configuration files.