CyberRota Analysis
AI-GeneratedThe Apereo CAS Client is vulnerable to man-in-the-middle (MITM) attacks due to its acceptance of any CA-trusted certificate for allowed hostnames, enabling attackers to intercept communications and capture sensitive authentication tokens. This vulnerability primarily impacts users of Exchange and Java applications utilizing the affected CAS Client versions, particularly 4.1.0 and 3.6.4. Organizations relying on these systems should prioritize remediation to safeguard against potential credential theft and unauthorized access.
Original NVD Description
Apereo CAS Client accepts any CA-trusted certificate for any hostname, provided the URL the client is calling matches the configured allowlist or regex. An attacker with a MITM position (DNS poisoning, rogue Wi-Fi, malicious proxy, etc.) can provide any CA-signed certificate for a hostname that matches the configured allowlist or regex. This can lead to intercepting the CAS exchange, capturing the Ticket-Granting Ticket (TGT), and subsequently obtaining Service Tickets on behalf of the victim. Because maintainers contact attempts were unsuccessful, vulnerabilities have only been confirmed in version 4.1.0 (Java Apereo CAS Client) and 3.6.4 (Jasig CAS Client) but may also affect other versions.