CVE-2007-6367 in SineCMS
Summary
by MITRE
Multiple cross-site scripting (XSS) vulnerabilities in the guestbook in SineCMS 2.3.4 and earlier allow remote attackers to inject arbitrary web script or HTML via the (1) username (user) or (2) comment (commento) field, different vectors than CVE-2007-2357.
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Analysis
by VulDB Data Team • 10/12/2024
The vulnerability identified as CVE-2007-6367 represents a critical cross-site scripting flaw within the guestbook component of SineCMS version 2.3.4 and earlier systems. This vulnerability specifically targets the user input validation mechanisms that process guestbook submissions, creating a pathway for malicious actors to execute arbitrary web scripts or HTML code within the context of other users' browsers. The flaw manifests in two distinct input vectors, making it particularly dangerous as it provides multiple attack surfaces for exploitation.
The technical implementation of this vulnerability stems from inadequate sanitization of user-supplied data within the guestbook functionality. When users submit entries containing usernames or comments, the application fails to properly validate or escape special characters that could be interpreted as HTML or JavaScript code. This lack of input sanitization creates an environment where attackers can embed malicious payloads directly into the username field or comment field, which are then rendered on the guestbook page without proper encoding or filtering. The vulnerability operates at the application layer and specifically targets the web application's data handling mechanisms, aligning with CWE-79 which defines improper neutralization of input during web page generation.
The operational impact of this vulnerability extends beyond simple data corruption or display issues. Attackers can leverage this weakness to steal session cookies, redirect users to malicious websites, deface the guestbook content, or even perform actions on behalf of authenticated users if session management is compromised. The guestbook component typically serves as a public-facing element of the website, making it an attractive target for attackers seeking to compromise user sessions or spread malicious content across the entire website. This vulnerability can be exploited by remote attackers without requiring any special privileges or authentication, making it particularly dangerous in publicly accessible web applications.
The security implications of CVE-2007-6367 align with several ATT&CK framework techniques including T1059.007 for command and scripting interpreter and T1566 for credential access through social engineering. The vulnerability creates an attack surface that can be leveraged for persistent threats, as malicious scripts can remain active in the guestbook until manually removed. Organizations utilizing SineCMS versions 2.3.4 or earlier should implement immediate mitigations including input validation, output encoding, and the implementation of Content Security Policies to prevent unauthorized script execution. The recommended remediation approach involves upgrading to a patched version of SineCMS, implementing proper HTML entity encoding for all user inputs, and establishing comprehensive input validation routines that prevent the injection of potentially dangerous characters and script tags. Additionally, regular security audits and penetration testing should be conducted to identify similar vulnerabilities in other components of the web application stack.