CVE-2003-1086 in Pmachine
Summary
by MITRE
PHP remote file inclusion vulnerability in pm/lib.inc.php in pMachine Free and pMachine Pro 2.2 and 2.2.1 allows remote attackers to execute arbitrary PHP code by modifying the pm_path parameter to reference a URL on a remote web server that contains the code.
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Analysis
by VulDB Data Team • 07/20/2025
The vulnerability described in CVE-2003-1086 represents a critical remote file inclusion flaw that affected pMachine Free and pMachine Pro versions 2.2 and 2.2.1. This security weakness resides within the pm/lib.inc.php file and demonstrates a classic path traversal attack vector that allows malicious actors to inject and execute arbitrary PHP code on vulnerable systems. The flaw specifically exploits how the application processes the pm_path parameter, which is used to include library files during application execution. When attackers manipulate this parameter to point to external web servers hosting malicious code, they can effectively extend the attack surface beyond the intended application boundaries.
The technical implementation of this vulnerability aligns with CWE-88, which categorizes it as a command injection flaw where untrusted data is used to construct file paths without proper validation or sanitization. This weakness operates under the principle that the application fails to properly validate user input before using it in file inclusion operations. The vulnerability is particularly dangerous because it allows attackers to execute code in the context of the web server process, potentially leading to complete system compromise. The attack requires no authentication and can be executed through simple HTTP requests, making it highly exploitable in automated scanning campaigns.
The operational impact of CVE-2003-1086 extends far beyond simple code execution, as it provides attackers with persistent access to affected systems and enables them to establish backdoors, exfiltrate data, or use the compromised server as a launch point for further attacks. This vulnerability directly maps to several ATT&CK techniques including T1190 for exploitation of remote services and T1059 for command and scripting interpreter usage. Organizations running vulnerable versions of pMachine were at significant risk of data breaches, service disruption, and potential lateral movement within their network infrastructure. The vulnerability's impact was amplified by the widespread use of pMachine platforms in web publishing environments where attackers could leverage the compromised systems for hosting malicious content or conducting phishing operations.
Mitigation strategies for this vulnerability should focus on immediate patching of affected applications, implementing proper input validation, and restricting file inclusion operations to local paths only. The recommended approach includes disabling remote file inclusion functionality in PHP configurations, using allow_url_include = Off in php.ini settings, and implementing strict parameter validation for all user-supplied inputs. Additionally, organizations should employ web application firewalls to detect and block suspicious file inclusion patterns, while implementing proper network segmentation to limit the potential impact of successful exploitation. Security monitoring should include detection of unusual file access patterns and attempts to include external URLs in application parameters, as these activities often precede successful exploitation of similar vulnerabilities.