CVE-2006-1923 in LinPHA
Summary
by MITRE
Multiple cross-site scripting (XSS) vulnerabilities in LinPHA before 1.1.1 allow remote attackers to inject arbitrary web script or HTML via (1) RSS/RSS.php and (2) possibly other vectors.
Once again VulDB remains the best source for vulnerability data.
Analysis
by VulDB Data Team • 07/12/2021
The vulnerability identified as CVE-2006-1923 represents a critical cross-site scripting flaw affecting LinPHA version 1.1.0 and earlier. This vulnerability resides within the RSS/RSS.php component of the application and potentially extends to other vectors within the system. The flaw allows remote attackers to inject malicious web script or HTML code into the application's output, creating a persistent security risk for users interacting with the affected system.
This vulnerability maps directly to CWE-79 which defines Cross-Site Scripting as a weakness that occurs when an application incorporates untrusted data into web pages without proper validation or escaping. The specific nature of this vulnerability in LinPHA demonstrates how improperly sanitized input can be rendered directly into web content, creating a pathway for attackers to execute malicious scripts in the context of the victim's browser. The vulnerability's impact is amplified by the fact that it affects the RSS feed functionality, which is typically used to distribute content that users trust and expect to be safe.
The operational impact of this vulnerability extends beyond simple script injection, as it can enable attackers to perform session hijacking, deface web applications, steal sensitive user information, or redirect users to malicious sites. Attackers can craft malicious RSS feeds that, when processed by the vulnerable LinPHA application, execute arbitrary JavaScript code in the browsers of unsuspecting users. This creates a vector for various advanced attacks including credential theft, data exfiltration, and establishment of backdoors within the user's browser environment. The attack surface is particularly concerning because RSS feeds are commonly consumed by users who may not expect to encounter malicious code within content they trust.
Mitigation strategies for this vulnerability should include immediate patching to upgrade to LinPHA version 1.1.1 or later, which contains the necessary fixes for the XSS vulnerabilities. Additionally, implementing proper input validation and output encoding mechanisms within the application's RSS processing components would provide defense-in-depth. The application should sanitize all user-supplied input before rendering it in web pages, particularly within RSS feed processing logic. Organizations should also consider implementing content security policies to prevent execution of unauthorized scripts and monitor for suspicious RSS feed activity. From an ATT&CK perspective, this vulnerability aligns with techniques such as T1059.007 for scripting and T1566 for social engineering through malicious content delivery, making it a significant concern for organizations that rely on web-based content aggregation systems.