CVE-2024-0314 is a Cross-site Scripting (XSS) vulnerability identified in FireEye Central Management version 9.1.1.956704. This vulnerability arises from improper neutralization of input during web page generation, classified under CWE-79. Specifically, the flaw allows an attacker to inject malicious scripts into special HTML elements within the application interface. When a victim user interacts with the affected web page, the malicious script executes in their browser context, potentially enabling session hijacking. The vulnerability is reflected XSS, meaning the malicious payload is part of the request and reflected back in the response without proper sanitization or encoding. The CVSS 3.1 base score is 5.4 (medium severity), with an attack vector of network (remote exploitation), low attack complexity, no privileges required, but requiring user interaction (clicking a crafted link or similar). The impact primarily affects confidentiality and integrity by enabling theft of session tokens or manipulation of user interface elements, but does not affect availability. No known exploits are reported in the wild yet, and no official patches have been linked at the time of publication. FireEye Central Management is a critical security orchestration and management platform used by organizations to monitor and manage FireEye security appliances and services, making it a high-value target for attackers aiming to compromise security infrastructure.

For European organizations, the impact of this vulnerability can be significant given the critical role FireEye Central Management plays in security operations. Successful exploitation could allow attackers to hijack sessions of security administrators, potentially gaining unauthorized access to sensitive security configurations, logs, and alerts. This could lead to stealthy manipulation or disabling of security controls, undermining incident detection and response capabilities. Confidentiality breaches could expose sensitive threat intelligence and organizational security posture data. The reflected XSS nature means phishing or social engineering could be used to trick administrators into triggering the exploit. Given the reliance on FireEye products in sectors such as finance, government, and critical infrastructure across Europe, exploitation could have cascading effects on organizational security and compliance with regulations like GDPR. Although the vulnerability does not directly impact system availability, the indirect consequences on security monitoring and incident response could increase risk exposure.

Organizations should immediately assess their deployment of FireEye Central Management to identify if version 9.1.1.956704 is in use. In the absence of an official patch, temporary mitigations include: 1) Implementing strict Content Security Policy (CSP) headers to restrict script execution and mitigate XSS impact. 2) Employing web application firewalls (WAFs) with custom rules to detect and block suspicious input patterns targeting the vulnerable parameters. 3) Educating administrators on phishing risks and avoiding clicking on untrusted links that could trigger reflected XSS. 4) Restricting access to the FireEye Central Management interface to trusted networks and VPNs to reduce exposure. 5) Monitoring logs for unusual access patterns or signs of session hijacking. Once FireEye releases a patch, organizations should prioritize prompt deployment. Additionally, reviewing and hardening session management controls (e.g., setting secure, HttpOnly cookies) can reduce the impact of session theft.