Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
Directory traversal vulnerability in Kaseya Virtual System Administrator (VSA) 22.214.171.124 before 126.96.36.199, 8..0.0.0 before 188.8.131.52, 184.108.40.206 before 220.127.116.11, and 18.104.22.168 before 22.214.171.124 allows remote authenticated users to write to and execute arbitrary files due to insufficient restrictions in file paths to json.ashx.
CWE-22 - Path Traversal
Path traversal (or directory traversal), is a vulnerability that allows malicious users to traverse the server's root directory, gaining access to arbitrary files and folders such as application code & data, back-end credentials, and sensitive operating system files. In the worst-case scenario, an attacker could potentially execute arbitrary files on the server, resulting in a denial of service attack. Such an exploit may severely impact the integrity, confidentiality, and availability of an application.