CVE-2006-1070 in DVguestbook
Summary
by MITRE
Cross-site scripting (XSS) vulnerability in dv_gbook.php in DVguestbook 1.0 allows remote attackers to inject arbitrary web script or HTML via the f parameter.
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Analysis
by VulDB Data Team • 10/10/2025
The vulnerability identified as CVE-2006-1070 represents a classic cross-site scripting flaw within the DVguestbook 1.0 web application, specifically affecting the dv_gbook.php component. This type of vulnerability falls under the Common Weakness Enumeration category CWE-79 which defines improper neutralization of input during web page generation as a security weakness. The vulnerability occurs when user-supplied input is not properly sanitized before being rendered in web pages, creating an opportunity for malicious actors to inject arbitrary scripts that execute in the context of other users' browsers.
The technical implementation of this XSS vulnerability is particularly concerning as it operates through the f parameter within the dv_gbook.php script. When an attacker submits malicious content through this parameter, the application fails to validate or escape the input before displaying it in the guestbook interface. This allows attackers to craft payloads that can execute within the victim's browser context, potentially leading to session hijacking, credential theft, or redirection to malicious sites. The vulnerability is classified as a reflected XSS attack since the malicious script is reflected back to the user through the application's response rather than being stored on the server.
The operational impact of this vulnerability extends beyond simple script injection, as it can enable attackers to compromise user sessions and perform actions on behalf of victims. According to the MITRE ATT&CK framework, this vulnerability maps to technique T1531 which involves the use of unauthorized commands to gain access to a system. The flaw allows attackers to manipulate the guestbook functionality to execute malicious scripts, potentially leading to complete compromise of user accounts if the application handles authentication or session management. The vulnerability is particularly dangerous in environments where multiple users interact with the guestbook, as a single malicious entry can affect all visitors to the page.
Mitigation strategies for CVE-2006-1070 should focus on implementing proper input validation and output encoding techniques. The recommended approach involves sanitizing all user input through proper escaping mechanisms before rendering content in web pages, specifically targeting the f parameter in this case. Organizations should implement Content Security Policy headers to limit script execution and prevent unauthorized code injection. Additionally, the application should be updated to a newer version of DVguestbook that addresses this vulnerability, as the original 1.0 version likely lacks proper security measures. The vulnerability also highlights the importance of regular security assessments and input validation practices, as similar flaws have been documented in numerous web applications throughout the years, making this a prime example of why proper web application security practices are essential in preventing such attacks.