CVE-2014-3892 in Meridian
Summary
by MITRE
Cross-site scripting (XSS) vulnerability in Nexa Meridian before 2014 allows remote attackers to inject arbitrary web script or HTML via unspecified vectors.
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Analysis
by VulDB Data Team • 02/26/2018
The CVE-2014-3892 vulnerability represents a critical cross-site scripting flaw discovered in the Nexa Meridian platform prior to 2014, constituting a fundamental web application security weakness that enabled remote attackers to execute malicious scripts within the context of victim sessions. This vulnerability falls under the common weakness enumeration CWE-79 which specifically addresses cross-site scripting attacks, where applications fail to properly validate or escape user-supplied input before rendering it in web pages. The affected Nexa Meridian system did not adequately sanitize data inputs, creating an exploitable entry point that could be leveraged by malicious actors to inject arbitrary HTML or JavaScript code into web interfaces.
The technical nature of this vulnerability stems from insufficient input validation mechanisms within the application's data handling processes, allowing attackers to craft malicious payloads that would be executed in the browsers of unsuspecting users who interacted with the vulnerable system. Attackers could potentially inject scripts through various input fields or parameters within the web application, exploiting the lack of proper output encoding or sanitization routines that should normally prevent malicious code execution. This type of vulnerability is particularly dangerous because it operates at the user-facing interface level, where the injected scripts could perform actions such as stealing session cookies, redirecting users to malicious sites, or modifying web page content to deceive users.
The operational impact of this vulnerability extends beyond simple data theft, as it could enable attackers to completely compromise user sessions and potentially gain unauthorized access to sensitive information within the Nexa Meridian system. Users who interacted with the vulnerable application could have their browser sessions hijacked, leading to unauthorized access to personal or business data. The remote nature of the attack means that exploitation could occur from anywhere on the internet without requiring physical access to the target system, making it particularly attractive to cybercriminals seeking scalable attack vectors. This vulnerability also posed risks to the integrity of the application's data and user trust in the platform, potentially leading to reputational damage and regulatory compliance issues.
Mitigation strategies for this vulnerability should have included immediate implementation of proper input validation and output encoding mechanisms to prevent malicious code injection. The remediation process would have required developers to sanitize all user inputs before processing them and to escape special characters in output rendering to prevent script execution. Organizations should have implemented content security policies to restrict script execution within the application environment and deployed web application firewalls to detect and block malicious payloads. Additionally, regular security testing including automated scanning and manual penetration testing would have helped identify similar vulnerabilities before they could be exploited. The vulnerability also highlighted the importance of following secure coding practices and adhering to established security frameworks such as those outlined in the OWASP Top Ten project, which specifically addresses XSS vulnerabilities as one of the most prevalent web application security risks. Organizations should have established comprehensive security awareness training programs to ensure developers understood the importance of input validation and output encoding in preventing such attacks, while also implementing proper security patch management processes to quickly address known vulnerabilities.