Description
Advantech WebAccess/VPN versions prior to 1.1.5 contain an absolute path traversal via AjaxStandaloneVpnClientsController.ajaxDownloadRoadWarriorConfigFileAction() that allows an authenticated network administrator to cause the application to read and return the contents of arbitrary files the web user (www-data) can access.
Problem types
CWE-22 Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
Product status
Any version before 1.1.5
Credits
Alex Williams from Pellera Technologies
References
icr.advantech.com/...11/sa-2025-01-vpn-portal-2025-11-06.pdf
www.vulncheck.com/...-via-ajaxstandalonevpnclientscontroller
icr.advantech.com/download/software