CVE-2022-39809 in Enterprise Integrator
Summary
by MITRE • 09/09/2022
An issue was discovered in WSO2 Enterprise Integrator 6.4.0. A Reflected Cross-Site Scripting (XSS) vulnerability has been identified in the Management Console under /carbon/mediation_secure_vault/properties/ajaxprocessor.jsp via the name parameter. Session hijacking or similar attacks would not be possible.
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Analysis
by VulDB Data Team • 10/15/2022
The vulnerability identified in WSO2 Enterprise Integrator 6.4.0 represents a critical security flaw that exposes the system to reflected cross-site scripting attacks through its management console interface. This specific weakness exists within the /carbon/mediation_secure_vault/properties/ajaxprocessor.jsp component where user input is not properly sanitized before being rendered back to the browser. The vulnerability is triggered when the name parameter is manipulated, allowing malicious actors to inject arbitrary javascript code that executes in the context of authenticated users' browsers. This particular implementation flaw demonstrates poor input validation practices and inadequate output encoding mechanisms that are fundamental requirements for preventing XSS attacks according to established security frameworks.
The technical nature of this vulnerability places it squarely within CWE-79 which specifically addresses cross-site scripting flaws where untrusted data is improperly incorporated into web pages without proper sanitization or encoding. The attack vector operates through reflected payloads where malicious input is immediately reflected back to the user without any server-side processing or validation. This creates an immediate execution environment for malicious scripts, potentially allowing attackers to steal session cookies, redirect users to malicious sites, or perform actions on behalf of authenticated users. The vulnerability specifically affects the management console interface which typically requires administrative privileges, making the potential impact significantly more severe than typical user-facing XSS flaws.
The operational implications of this vulnerability extend beyond simple script execution as it provides attackers with a foothold to escalate privileges within the system. While the description indicates that session hijacking attacks are not possible through this specific vector, the ability to inject malicious scripts into the management console creates numerous attack possibilities including credential theft, data exfiltration, and privilege escalation. Attackers could potentially use this vulnerability to establish persistent access to the system by injecting scripts that maintain persistence across sessions or to perform reconnaissance activities that gather information about other system components. The fact that this affects the management console interface means that successful exploitation could provide attackers with administrative capabilities over the entire integration platform, making it a high-value target for threat actors.
Security mitigations for this vulnerability should focus on implementing comprehensive input validation and output encoding mechanisms throughout the application. The primary fix involves ensuring that all user-supplied parameters including the name parameter in this case are properly sanitized and encoded before being processed or rendered back to the browser. This approach aligns with the defensive programming principles outlined in the OWASP Top Ten and follows the principle of least privilege for input handling. Organizations should also implement proper web application firewalls and content security policies that can detect and block suspicious script injections. Additionally, regular security testing including dynamic application security testing and manual penetration testing should be conducted to identify similar vulnerabilities across the application stack. The remediation process should include thorough code reviews focusing on input handling practices and implementation of automated security scanning tools that can identify similar XSS vulnerabilities in the codebase.