CVE-2009-0699 in Business Manager
Summary
by MITRE
Cross-site scripting (XSS) vulnerability in pagesUTF8/auftrag_allgemeinauftrag.jsp in Plunet BusinessManager 4.1 and earlier allows remote authenticated users to inject arbitrary web script or HTML via the (1) QUB and (2) Bez74 parameters.
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Analysis
by VulDB Data Team • 11/28/2024
The CVE-2009-0699 vulnerability represents a critical cross-site scripting flaw discovered in the Plunet BusinessManager 4.1 software suite, specifically within the pagesUTF8/auftrag_allgemeinauftrag.jsp component. This vulnerability affects organizations utilizing the Plunet BusinessManager platform for enterprise content management and business process automation. The flaw exists in the application's handling of user-supplied input parameters, creating a persistent security risk that can be exploited by authenticated attackers who possess valid credentials within the system. The vulnerability's impact extends beyond simple data theft, as it enables attackers to execute malicious scripts within the context of other users' browsers, potentially leading to complete session hijacking and unauthorized access to sensitive business data.
The technical implementation of this vulnerability stems from insufficient input validation and output encoding within the application's parameter processing mechanism. Attackers can exploit this weakness by injecting malicious script code through two specific parameters: QUB and Bez74, which are processed by the vulnerable jsp page. When these parameters contain unescaped or improperly sanitized user input, the application fails to properly encode the data before rendering it in the web response. This allows attackers to inject malicious HTML and JavaScript code that executes in the browser context of authenticated users who view the affected page. The vulnerability operates at the application layer and specifically targets the web interface's data rendering capabilities, making it particularly dangerous in enterprise environments where users maintain elevated privileges.
The operational impact of this vulnerability extends significantly beyond typical XSS attacks, as it affects authenticated users within a business management system that likely contains sensitive corporate data, financial information, and confidential business processes. An attacker who successfully exploits this vulnerability can potentially access other users' sessions, modify business records, extract confidential information, or even escalate privileges within the application. The attack vector requires only authentication to the system, making it particularly dangerous in environments where insider threats exist or where credentials are compromised through social engineering or other means. This vulnerability directly violates the principle of least privilege and can lead to complete system compromise if attackers can leverage it to gain unauthorized access to administrative functions.
Organizations should implement comprehensive input validation and output encoding mechanisms to prevent this class of vulnerability from occurring in their applications. The mitigation strategy should include immediate patching of the Plunet BusinessManager software to version 4.2 or later, which contains the necessary security fixes. Additionally, implementing proper parameter sanitization, HTML encoding of all user-supplied data before rendering, and regular security code reviews can prevent similar vulnerabilities. Organizations should also consider implementing web application firewalls and content security policies to provide additional layers of protection. This vulnerability aligns with CWE-79 which defines cross-site scripting as a weakness in input validation and output encoding. From an ATT&CK framework perspective, this vulnerability maps to T1566 (Phishing) and T1059 (Command and Scripting Interpreter) as attackers can use it to execute malicious code and establish persistent access to the target environment. The vulnerability also demonstrates the importance of secure coding practices and proper input validation as outlined in the OWASP Top Ten security risks.