CVE-2005-1869 in MWChat
Summary
by MITRE
PHP remote file inclusion vulnerability in start_lobby.php in MWChat 6.x allows remote attackers to execute arbitrary PHP code via the CONFIG[MWCHAT_Libs] parameter.
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Analysis
by VulDB Data Team • 07/09/2018
The vulnerability identified as CVE-2005-1869 represents a critical remote file inclusion flaw in MWChat 6.x software, specifically within the start_lobby.php script. This vulnerability stems from improper input validation and sanitization mechanisms that fail to adequately restrict user-supplied data from being directly incorporated into file inclusion operations. The affected parameter CONFIG[MWCHAT_Libs] serves as the attack vector where malicious actors can inject arbitrary file paths or URLs, enabling them to execute unauthorized PHP code on the target system. The flaw resides in the application's failure to properly validate or sanitize user input before using it in dynamic file inclusion contexts, creating a direct pathway for remote code execution attacks.
From a technical perspective, this vulnerability operates under the common category of remote file inclusion (RFI) attacks, which are classified under CWE-88 and CWE-94 within the CWE database. The vulnerability allows attackers to manipulate the CONFIG[MWCHAT_Libs] parameter to reference external malicious files, potentially leading to complete system compromise. The attack typically involves crafting a malicious URL that points to a remote server hosting attacker-controlled PHP code, which gets executed when the vulnerable application attempts to include the specified library path. This type of vulnerability is particularly dangerous because it can be exploited without authentication and can lead to full system control, data exfiltration, or server compromise. The vulnerability also aligns with ATT&CK technique T1190, which describes the use of remote file inclusion to establish persistent access to target systems.
The operational impact of this vulnerability extends beyond simple code execution, as it can enable attackers to perform a wide range of malicious activities including data theft, system reconnaissance, privilege escalation, and establishment of persistent backdoors. Once exploited, attackers can gain access to sensitive information stored within the chat application, potentially compromising user communications and personal data. The vulnerability affects the integrity and confidentiality of the system, as it allows unauthorized parties to inject malicious code that can operate with the privileges of the web application. This type of vulnerability can also serve as a stepping stone for further attacks within a network infrastructure, as compromised systems often provide access to other connected systems and resources.
Mitigation strategies for CVE-2005-1869 must address both immediate remediation and long-term security hardening measures. The primary solution involves implementing proper input validation and sanitization for all user-supplied parameters, particularly those used in dynamic file inclusion operations. Organizations should disable remote file inclusion capabilities in PHP configurations and enforce strict validation of all input data to prevent malicious payloads from being processed. Additionally, implementing proper access controls, regular security updates, and code review processes can help prevent similar vulnerabilities from being introduced into applications. Security measures should include disabling the allow_url_include directive in PHP configurations, implementing web application firewalls, and conducting regular vulnerability assessments to identify and remediate similar issues. The vulnerability also underscores the importance of following secure coding practices and adhering to security standards such as those outlined in the OWASP Top Ten to prevent injection flaws and other common web application vulnerabilities.