CVE-2009-4542 in Support Center
Summary
by MITRE
Cross-site scripting (XSS) vulnerability in newticket.php in IsolSoft Support Center 2.5 allows remote attackers to inject arbitrary web script or HTML via the lang parameter.
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Analysis
by VulDB Data Team • 12/08/2024
The CVE-2009-4542 vulnerability represents a classic cross-site scripting flaw within the IsolSoft Support Center 2.5 web application, specifically targeting the newticket.php script. This vulnerability arises from insufficient input validation and sanitization mechanisms that fail to properly handle user-supplied data. The affected parameter, lang, serves as an entry point for malicious actors to inject arbitrary web scripts or HTML content into the application's response, creating a persistent security risk that can affect all users interacting with the support ticket system.
The technical exploitation of this vulnerability occurs when an attacker manipulates the lang parameter in the newticket.php URL to include malicious script code. When the vulnerable application processes this parameter without proper sanitization, it incorporates the injected content directly into the HTML response sent to the victim's browser. This allows attackers to execute scripts in the context of the victim's session, potentially enabling session hijacking, credential theft, or redirection to malicious sites. The vulnerability is classified as a reflected XSS attack pattern, where the malicious payload is reflected back to the user through the application's response, making it particularly dangerous for web applications that do not properly validate or escape user input.
The operational impact of this vulnerability extends beyond simple script execution, as it can facilitate more sophisticated attacks within the context of the support center environment. An attacker could potentially steal administrative credentials, modify ticket contents, or gain unauthorized access to sensitive customer information. The vulnerability affects the integrity and confidentiality of the support system, potentially compromising the trust relationship between the organization and its customers. Given that support ticket systems often contain sensitive business and personal information, the exploitation of this XSS vulnerability could lead to data breaches, regulatory compliance violations, and significant reputational damage. The attack requires minimal technical expertise, making it particularly dangerous as it can be exploited by threat actors of varying skill levels.
Organizations should implement comprehensive input validation and output encoding mechanisms to address this vulnerability, following security best practices outlined in the CWE-79 category for cross-site scripting. The mitigation strategy should include immediate patching of the IsolSoft Support Center application to version 2.6 or later, which contains the necessary fixes for the XSS vulnerability. Additionally, implementing proper parameter validation, using secure coding practices such as input sanitization, and deploying web application firewalls can provide additional layers of protection. Organizations should also consider implementing content security policies to prevent execution of unauthorized scripts and conduct regular security assessments to identify similar vulnerabilities in other components of their web infrastructure. The ATT&CK framework categorizes this vulnerability under the T1059.007 technique for script injection, emphasizing the importance of proper input validation and output encoding as primary defensive measures against such attacks.