CVE-2007-3934 in E-Market
Summary
by MITRE
PHP remote file inclusion vulnerability in postscript/postscript.php in BBS E-Market allows remote attackers to execute arbitrary PHP code via a URL in the p_mode parameter.
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Analysis
by VulDB Data Team • 09/26/2024
The vulnerability identified as CVE-2007-3934 represents a critical remote file inclusion flaw within the BBS E-Market software's postscript module. This security weakness exists in the postscript/postscript.php script where the application fails to properly validate or sanitize user-supplied input parameters. The vulnerability specifically affects the p_mode parameter which is used to determine the mode of operation for postscript processing. When an attacker supplies a malicious URL as the value for this parameter, the application blindly includes and executes the remote code, creating an avenue for arbitrary code execution on the target system.
This vulnerability falls under the CWE-88 category of Command Injection and aligns with the ATT&CK technique T1190 - Exploit Public-Facing Application, as it represents a direct exploitation opportunity through a publicly accessible web interface. The flaw demonstrates poor input validation practices and improper parameter handling within the PHP application, making it susceptible to malicious input manipulation. The vulnerability operates at the application layer and can be exploited without requiring authentication, making it particularly dangerous for publicly accessible web applications. The remote file inclusion nature of this vulnerability allows attackers to execute code on the target server, potentially leading to complete system compromise.
The operational impact of this vulnerability extends beyond simple code execution, as it provides attackers with the capability to gain persistent access to the affected system. Once exploited, an attacker can upload additional malicious files, establish backdoors, or escalate privileges within the system. The vulnerability affects the integrity and confidentiality of the application and can lead to data breaches, system compromise, and potential lateral movement within the network. Organizations running BBS E-Market software are at risk of unauthorized access, data exfiltration, and service disruption. The vulnerability's exploitation does not require specialized tools or advanced knowledge, making it a particularly attractive target for automated attack scripts and less sophisticated threat actors.
Mitigation strategies for this vulnerability include immediate patching of the BBS E-Market software to the latest available version that addresses this specific flaw. Organizations should implement proper input validation and sanitization techniques to prevent user-supplied parameters from being used in file inclusion operations. The use of allow_url_include and allow_url_fopen PHP directives should be disabled to prevent remote file inclusion attacks. Additionally, implementing web application firewalls and input filtering mechanisms can provide additional layers of protection. Regular security audits and vulnerability assessments should be conducted to identify similar issues in other applications. The principle of least privilege should be applied to web application accounts, limiting the potential impact of successful exploitation. System monitoring and logging should be enhanced to detect suspicious file inclusion patterns and unauthorized code execution attempts. Organizations should also consider implementing secure coding practices and regular security training for developers to prevent similar vulnerabilities in future application development cycles.