CVE-2007-3405 in Lebisoft zdefter
Summary
by MITRE
Multiple cross-site scripting (XSS) vulnerabilities in defter_yaz.asp in Lebisoft zdefter 4.0 allow remote attackers to inject arbitrary web script or HTML via the (1) ad and (2) konu parameters. NOTE: the provenance of this information is unknown; the details are obtained solely from third party information.
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Analysis
by VulDB Data Team • 09/02/2017
The vulnerability identified as CVE-2007-3405 represents a critical cross-site scripting weakness in Lebisoft zdefter 4.0's defter_yaz.asp component. This flaw resides in the application's handling of user input parameters, specifically the ad and konu parameters that are processed without adequate sanitization or validation. The vulnerability falls under the CWE-79 category of Cross-Site Scripting, which is a fundamental web application security issue that allows attackers to inject malicious scripts into web pages viewed by other users. The affected application fails to properly encode or escape user-supplied data before incorporating it into dynamic web content, creating an environment where malicious code can execute in the context of other users' browsers.
The technical exploitation of this vulnerability occurs when remote attackers submit malicious payloads through the ad and konu parameters in the defter_yaz.asp script. These parameters are directly incorporated into the web page output without proper input validation or output encoding, enabling attackers to inject arbitrary HTML or JavaScript code. When legitimate users view the affected web page, their browsers execute the injected malicious scripts, potentially leading to session hijacking, credential theft, or redirection to malicious websites. The vulnerability demonstrates a classic improper input validation flaw where the application trusts user input without adequate sanitization, allowing attackers to manipulate the application's behavior and compromise user security.
The operational impact of this vulnerability extends beyond simple script injection, as it can enable sophisticated attack vectors that compromise user sessions and data integrity. Attackers can leverage this vulnerability to steal session cookies, redirect users to phishing sites, or modify page content to deceive users into revealing sensitive information. The vulnerability affects all users of the affected zdefter 4.0 application who interact with pages containing the vulnerable parameters, creating a persistent security risk that can be exploited by anyone with access to the web application. From an attacker perspective, this vulnerability provides a straightforward path to user compromise, making it particularly dangerous in environments where users may not be security-aware or where the application handles sensitive information.
Mitigation strategies for this vulnerability should focus on implementing proper input validation and output encoding mechanisms. The application should validate all user input against a strict whitelist of acceptable characters and lengths, while also implementing proper HTML encoding for all dynamic content before rendering. The recommended approach aligns with the OWASP Secure Coding Practices and follows the principle of least privilege in input handling. Organizations should also consider implementing Content Security Policy headers to limit the execution of unauthorized scripts, and regular security testing should be conducted to identify similar vulnerabilities in other application components. Additionally, upgrading to a newer version of the application or implementing web application firewalls can provide additional layers of protection against exploitation attempts. This vulnerability highlights the importance of secure coding practices and the need for regular security assessments to identify and remediate similar issues in web applications.