CVE-2007-3887 in ASP Ziyaretci Defteri
Summary
by MITRE
Multiple cross-site scripting (XSS) vulnerabilities in mesaj_formu.asp in ASP Ziyaretci Defteri 1.1 allow remote attackers to inject arbitrary web script or HTML via the (1) Isim, (2) Mesajiniz, and (3) E-posta fields. NOTE: these probably correspond to the isim, mesaj, and posta parameters to save.php.
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Analysis
by VulDB Data Team • 10/28/2017
The vulnerability identified as CVE-2007-3887 represents a critical cross-site scripting weakness in ASP Ziyaretci Defteri version 1.1, specifically within the mesaj_formu.asp component. This flaw exposes the application to malicious injection attacks that can compromise user sessions and potentially lead to broader system compromise. The vulnerability affects three primary input fields including Isim (Name), Mesajiniz (Your Message), and E-posta (Email) which correspond to the isim, mesaj, and posta parameters in the underlying save.php script. The vulnerability classifies under CWE-79 which specifically addresses cross-site scripting flaws where untrusted data is improperly incorporated into web pages without adequate validation or sanitization.
The technical exploitation of this vulnerability occurs when remote attackers submit malicious scripts through the vulnerable form fields, which are then stored and subsequently executed in the browsers of other users who access the visitor book entries. This type of attack leverages the application's failure to properly sanitize user input before rendering it within web pages, creating an environment where attacker-controlled code can execute in the context of legitimate user sessions. The vulnerability demonstrates a classic input validation failure where the application trusts user-supplied data without proper encoding or filtering mechanisms.
Operationally, this vulnerability poses significant risks to both user privacy and application integrity. When exploited, attackers can steal session cookies, redirect users to malicious sites, deface the visitor book entries, or perform actions on behalf of authenticated users. The impact extends beyond simple data corruption as it can facilitate more sophisticated attacks such as credential theft, session hijacking, or the delivery of malware through drive-by downloads. The vulnerability affects any user who interacts with the visitor book functionality, making it particularly dangerous in environments where the application serves multiple users or is publicly accessible. The attack vector is straightforward requiring only that a victim view a malicious entry, which aligns with ATT&CK technique T1566.001 for initial access through spearphishing attachments or links.
Mitigation strategies for this vulnerability should focus on implementing robust input validation and output encoding mechanisms. The primary defense involves sanitizing all user inputs through proper validation techniques such as allowing only expected character sets and implementing strict length limitations for form fields. Additionally, the application should employ proper HTML encoding when displaying user-supplied content to prevent script execution in browser contexts. Security measures should include input validation at multiple layers, including client-side and server-side validation, and the implementation of Content Security Policy headers to limit script execution. Regular security assessments and code reviews should be conducted to identify similar vulnerabilities in other application components. The remediation process should also involve updating the application to a newer version that addresses these security flaws, as the original version 1.1 appears to lack proper security controls for handling user input. Organizations should also implement web application firewalls to detect and block malicious input patterns while maintaining audit logs to track potential exploitation attempts.