CVE-2018-17322 in YUNUCMS
Summary
by MITRE
Cross-site scripting (XSS) vulnerability in index.php/index/category/index in YUNUCMS 1.1.4 allows remote attackers to inject arbitrary web script or HTML via the area parameter.
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Analysis
by VulDB Data Team • 03/26/2020
The vulnerability identified as CVE-2018-17322 represents a critical cross-site scripting flaw within the YUNUCMS content management system version 1.1.4. This vulnerability exists in the specific file index.php/index/category/index where user input is not properly sanitized before being rendered in web pages. The attack vector specifically targets the area parameter which serves as an entry point for malicious code injection. This type of vulnerability falls under CWE-79 which defines improper neutralization of input during web page generation, making it a classic example of client-side code injection that can compromise user sessions and data integrity.
The technical implementation of this vulnerability allows remote attackers to execute arbitrary web scripts or HTML code within the context of other users' browsers. When the area parameter is submitted to the vulnerable endpoint, the application fails to validate or escape the input before incorporating it into dynamic web content. This omission creates a persistent XSS attack surface where malicious actors can craft payloads that will execute whenever legitimate users view the affected pages. The vulnerability's impact extends beyond simple script execution as it can be leveraged to steal session cookies, redirect users to malicious sites, or perform actions on behalf of authenticated users.
From an operational perspective, this vulnerability poses significant risks to organizations using YUNUCMS 1.1.4 as their web content management platform. The remote nature of the attack means that threat actors can exploit this weakness without requiring physical access to the system or prior authentication. The potential for session hijacking and credential theft makes this vulnerability particularly dangerous in environments where users have administrative privileges or access to sensitive information. The vulnerability can be exploited through various attack vectors including social engineering campaigns where users are tricked into clicking malicious links, or through automated scanning tools that systematically test for common XSS patterns. According to ATT&CK framework category T1566, this vulnerability represents a technique for Initial Access through malicious web content.
The mitigation strategies for CVE-2018-17322 should focus on immediate input validation and output encoding practices. Organizations must implement proper parameter sanitization for all user-supplied data, particularly in areas where dynamic content is generated. The recommended approach involves applying strict input validation rules that reject or sanitize any potentially malicious content before it reaches the application's rendering layer. Additionally, implementing Content Security Policy headers can provide an additional layer of protection by restricting the sources from which scripts can be loaded. The solution should also include updating to the latest version of YUNUCMS where this vulnerability has been patched, as the vendor has likely addressed the improper input handling in newer releases. Organizations should also consider implementing web application firewalls to detect and block suspicious input patterns targeting this specific vulnerability. Regular security assessments and code reviews should be conducted to identify similar input validation weaknesses across the entire application stack, as this vulnerability demonstrates the importance of consistent security practices throughout the software development lifecycle.