CVE-2006-1702 in spip
Summary
by MITRE
PHP remote file inclusion vulnerability in spip_login.php3 in SPIP 1.8.3 allows remote attackers to execute arbitrary PHP code via a URL in the url parameter.
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Analysis
by VulDB Data Team • 07/24/2018
The vulnerability described in CVE-2006-1702 represents a critical remote file inclusion flaw in the SPIP content management system version 1.8.3. This vulnerability exists within the spip_login.php3 script where user input is directly incorporated into file inclusion operations without proper validation or sanitization. The issue stems from the application's failure to properly validate the url parameter, allowing attackers to inject malicious URLs that get processed by the include or require functions. This type of vulnerability falls under the category of insecure direct object references and represents a classic path traversal attack vector that has been documented in various security frameworks including CWE-98 and CWE-22.
The technical exploitation of this vulnerability occurs when an attacker crafts a malicious URL parameter that points to a remote server hosting malicious PHP code. When the vulnerable SPIP application processes this parameter, it attempts to include the remote file, effectively executing the attacker's code within the context of the web server. This remote code execution capability enables attackers to perform various malicious activities including data exfiltration, privilege escalation, and system compromise. The vulnerability demonstrates poor input validation practices and highlights the importance of proper sanitization of user-supplied data before it is used in dynamic code execution contexts.
From an operational perspective, this vulnerability poses severe risks to organizations using SPIP 1.8.3 as it provides attackers with unrestricted remote code execution capabilities. The impact extends beyond simple data theft to include complete system compromise and potential lateral movement within network environments. Attackers can leverage this vulnerability to establish persistent backdoors, install additional malware, or use the compromised system as a launch point for attacks against other network resources. The vulnerability's exploitability is enhanced by the fact that it requires no authentication and can be triggered through simple web requests, making it particularly dangerous in public-facing applications.
The mitigation strategies for this vulnerability involve immediate patching of the SPIP application to version 1.8.4 or later, which contains the necessary fixes for the remote file inclusion issue. Organizations should also implement proper input validation and sanitization measures to prevent similar vulnerabilities from occurring in other applications. The principle of least privilege should be enforced by restricting file inclusion operations to local resources only and implementing proper access controls. Additionally, network segmentation and intrusion detection systems can help detect and prevent exploitation attempts. This vulnerability aligns with ATT&CK technique T1190 for exploiting vulnerabilities and demonstrates the importance of secure coding practices as outlined in OWASP Top 10 and other industry security standards.