CVE-2008-2044 in Dwins
Summary
by MITRE
includes/library.php in netOffice Dwins 1.3 p2 compares the demoSession variable to the true string literal instead of the true boolean literal, which allows remote attackers to bypass authentication and execute arbitrary code by setting this variable to 1, as demonstrated by uploading a PHP script via an add action to projects_site/uploadfile.php.
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Analysis
by VulDB Data Team • 08/12/2025
The vulnerability identified as CVE-2008-2044 resides within the netOffice Dwins 1.3 p2 web application, specifically in the includes/library.php file where a critical logic flaw exists in the authentication mechanism. This flaw represents a classic case of improper boolean comparison that directly undermines the application's security controls and creates a pathway for unauthorized access. The vulnerability stems from the application's demonstration session variable named demoSession being compared against the string literal "true" rather than the boolean literal true, creating a condition where attackers can manipulate the application's behavior through simple parameter injection.
The technical exploitation of this vulnerability occurs through a straightforward parameter manipulation attack where remote adversaries can set the demoSession variable to the numeric value 1, which in PHP's loose typing system evaluates as equivalent to true when compared against the string literal. This misconfiguration allows attackers to bypass the intended authentication checks and gain access to restricted functionality within the application. The vulnerability is particularly dangerous because it enables full administrative access to the system, allowing attackers to execute arbitrary code and perform actions that should be restricted to authorized users only.
The operational impact of this vulnerability extends far beyond simple authentication bypass, as it provides attackers with complete control over the affected web application and its underlying system resources. Once authenticated, attackers can upload malicious PHP scripts through the projects_site/uploadfile.php endpoint, creating a persistent backdoor within the system. This capability aligns with the attack pattern described in the MITRE ATT&CK framework under the technique of "T1505.003 - Server Software Component: Web Shell" and represents a direct violation of the principle of least privilege. The vulnerability also demonstrates poor input validation practices that are commonly associated with CWE-254, which addresses security weaknesses in the implementation of security controls.
The exploitation chain begins with an attacker identifying the vulnerable parameter in the authentication flow, followed by setting the demoSession variable to 1, which triggers the flawed comparison logic. This manipulation allows the application to incorrectly evaluate the session state, granting access to the file upload functionality. The uploaded PHP scripts can then be executed within the application context, potentially leading to complete system compromise, data exfiltration, or further network infiltration. Organizations running this vulnerable version of netOffice face significant risk of unauthorized access and potential data breaches, as the vulnerability does not require any special privileges or complex attack vectors to exploit.
Mitigation strategies for this vulnerability should focus on immediate code-level fixes, including correcting the boolean comparison logic to properly evaluate the demoSession variable against the correct boolean literal. Additionally, implementing proper input validation and sanitization measures would prevent attackers from manipulating session variables through external input. Organizations should also consider implementing web application firewalls, restricting file upload capabilities to authenticated users only, and conducting regular security audits to identify similar logic flaws in other application components. The vulnerability highlights the importance of following secure coding practices and adhering to the OWASP Top Ten security principles, particularly those related to authentication and input validation.