CVE-2024-8527 is an open redirect vulnerability classified under CWE-601 found in Automated Logic WebCTRL and Carrier i-Vu building management systems versions 6.0, 6.5, 7.0, 8.0, 8.5, and 9.0. The vulnerability arises from insufficient validation of URL parameters that control redirection destinations. An attacker can craft a malicious URL that appears to originate from a trusted WebCTRL domain but redirects the user to an attacker-controlled site. This can be exploited to conduct phishing attacks, steal session cookies, or bypass security controls that rely on domain trust. The CVSS 4.0 vector indicates the attack requires local access (AV:L), low attack complexity (AC:L), no authentication (PR:N), and no user interaction (UI:N), with high impact on confidentiality, integrity, and availability. The scope is limited to the affected WebCTRL instances but can have severe consequences in environments where these systems control critical building infrastructure. No public exploits are known yet, but the vulnerability is publicly disclosed and rated high severity, necessitating immediate mitigation efforts.

For European organizations, especially those managing critical infrastructure such as commercial buildings, hospitals, and government facilities using Automated Logic WebCTRL or Carrier i-Vu systems, this vulnerability poses a significant risk. Attackers exploiting the open redirect can trick users into visiting malicious sites, potentially leading to credential theft, session hijacking, or malware deployment. This can compromise the integrity and availability of building automation systems, impacting HVAC, security, and energy management. The indirect effects include reputational damage, regulatory non-compliance (e.g., GDPR if personal data is compromised), and operational disruptions. Since these systems often integrate with broader IT and OT networks, exploitation could serve as a foothold for further lateral movement or attacks on critical infrastructure.

1. Monitor Automated Logic and Carrier vendor communications closely and apply security patches immediately once available. 2. Implement strict input validation and sanitization on URL parameters to prevent open redirects. 3. Use web application firewalls (WAFs) to detect and block suspicious redirect attempts. 4. Educate users and administrators about the risks of clicking on unexpected or suspicious links, especially those appearing to originate from trusted domains. 5. Employ network segmentation to isolate building management systems from general IT networks, limiting exposure. 6. Conduct regular security assessments and penetration tests focused on web interfaces of building automation systems. 7. Review and harden session management controls to reduce the impact of potential session hijacking. 8. Implement logging and monitoring to detect unusual redirect patterns or access attempts.