CVE-2018-7741 in Eramba
Summary
by MITRE
Eramba e1.0.6.033 has Reflected XSS in the Date Filter via the created parameter to the /crons URI.
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Analysis
by VulDB Data Team • 01/11/2020
The vulnerability identified as CVE-2018-7741 affects the Eramba security management platform version 1.0.6.033, specifically targeting the date filtering functionality within the cron job management interface. This issue represents a classic reflected cross-site scripting vulnerability that allows attackers to inject malicious scripts into the application's response through a crafted parameter. The vulnerability manifests when the application processes the created parameter in requests directed to the /crons URI endpoint without adequate input validation or output encoding mechanisms.
The technical flaw stems from the application's failure to properly sanitize user-supplied input before incorporating it into dynamic web content. When a user submits a request containing a malicious payload in the created parameter, the application reflects this input back to the user's browser without appropriate HTML escaping or encoding. This creates an opportunity for attackers to execute arbitrary JavaScript code within the context of a victim's browser session, potentially leading to session hijacking, credential theft, or unauthorized actions performed on behalf of the user. The vulnerability is classified as a reflected XSS according to CWE-79, which specifically addresses improper neutralization of input during web page generation that can lead to cross-site scripting attacks.
The operational impact of this vulnerability extends beyond simple script execution as it can enable attackers to bypass security controls and escalate privileges within the application environment. An attacker could craft a malicious URL containing the XSS payload and deliver it through phishing campaigns, social engineering, or by compromising legitimate user sessions. The reflected nature of the vulnerability means that the malicious script is executed immediately when a user clicks on the crafted link, making it particularly dangerous for web applications that require authentication and have privileged access controls. This vulnerability directly aligns with ATT&CK technique T1566.001, which describes the use of spearphishing with links to deliver malware or exploit other vulnerabilities.
Mitigation strategies for CVE-2018-7741 should focus on implementing robust input validation and output encoding mechanisms throughout the application's data flow. The primary defense involves sanitizing all user-supplied input through proper encoding before incorporating it into web responses, particularly for parameters that are reflected back to users. Implementing a Content Security Policy (CSP) can provide additional protection by restricting the sources from which scripts can be executed within the application context. Regular security testing including automated scanning and manual penetration testing should be conducted to identify similar vulnerabilities in other application components. Organizations should also consider implementing web application firewalls to detect and block suspicious traffic patterns associated with XSS attacks, while maintaining up-to-date security patches for all application components to prevent exploitation of known vulnerabilities.