ASPECT is an award-winning scalable building energy management and control solution designed to allow users seamless access to their building data through standard building protocols including smart devices.
The ABB BMS/BAS system has a vulnerability in caldavInstall.php, caldavInstallAgendav.php, and caldavUpload.php files, where the presence of an EXPERTMODE parameter activates a badassMode feature. This mode allows an unauthenticated attacker to bypass MD5 checksum validation during file uploads. By enabling badassMode and setting the skipChecksum parameter, the system skips integrity verification, allowing attackers to upload or install altered CalDAV zip files without authentication. This vulnerability permits unauthorized file modifications, potentially exposing the system to tampering or malicious uploads.