CVE-2023-43341 in Evolution
Summary
by MITRE • 10/25/2023
Cross-site scripting (XSS) vulnerability in evolution evo v.3.2.3 allows a local attacker to execute arbitrary code via a crafted payload injected uid parameter.
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Analysis
by VulDB Data Team • 09/30/2025
This cross-site scripting vulnerability exists within the evolution evo v.3.2.3 web application framework where improper input validation allows malicious payloads to be injected through the uid parameter. The flaw represents a classic case of insufficient sanitization of user-supplied data, enabling attackers to manipulate the application's behavior by injecting malicious scripts that execute in the context of other users' browsers. The vulnerability specifically targets the uid parameter which is likely used for user identification or session management within the application's authentication or authorization mechanisms.
The technical implementation of this XSS vulnerability stems from the application's failure to properly escape or validate input received through the uid parameter before processing or rendering it within web responses. When a maliciously crafted uid value containing script code is submitted to the application, the system fails to sanitize this input adequately, allowing the injected payload to persist and execute when other users interact with the affected application. This type of vulnerability falls under CWE-79 which specifically addresses Cross-Site Scripting flaws in web applications. The vulnerability can be exploited by local attackers who have access to the application's input mechanisms, potentially including authenticated users with sufficient privileges to manipulate parameters.
The operational impact of this vulnerability extends beyond simple script execution, as it can enable attackers to perform session hijacking, steal sensitive user data, manipulate application functionality, or redirect users to malicious sites. An attacker could craft a payload that, when executed in a victim's browser, could capture session cookies, redirect to phishing pages, or even inject additional malicious code to escalate privileges. The local nature of the attack vector suggests that the vulnerability may be exploitable through various means including but not limited to direct parameter manipulation, file upload vulnerabilities, or through other application components that accept user input. This vulnerability directly maps to several ATT&CK techniques including T1566 for social engineering and T1059 for command and scripting interpreter, as attackers can leverage the XSS to execute arbitrary code and maintain persistence.
Mitigation strategies for this vulnerability should include comprehensive input validation and output encoding mechanisms to prevent script injection attacks. The application should implement strict validation of the uid parameter to ensure it conforms to expected formats and reject any input containing potentially dangerous characters or patterns. Additionally, proper context-aware output encoding should be implemented for all user-supplied data rendered in web responses. Security headers including Content Security Policy should be configured to limit script execution and prevent unauthorized code from running within the application context. Regular security testing including dynamic application security testing and manual penetration testing should be conducted to identify and remediate similar vulnerabilities. The implementation of secure coding practices and regular security training for developers can significantly reduce the likelihood of such vulnerabilities being introduced into the application codebase. Organizations should also consider implementing web application firewalls to provide additional layers of protection against XSS attacks and regularly update their application frameworks to ensure they are running the latest security patches.