Advantech WebAccess Dashboard Viewer removeFolder Directory Traversal Denial of Service VulnerabilityZDI-16-124: February 5th, 2016
TippingPoint™ IPS Customer ProtectionTippingPoint IPS customers are protected against this vulnerability by Digital Vaccine protection filter ID 20809. For further product information on the TippingPoint IPS:
This vulnerability allows remote attackers to deny service to all users on vulnerable installations of Advantech WebAccess. Authentication is not required to exploit this vulnerability.
The specific flaw exists within the WebAccess Dashboard Viewer. Insufficient validation within the removeFolder script allows unauthenticated callers to remove key system directories so that access to the functionality of WebAccess is completely blocked to all users.
Vendor ResponseAdvantech has issued an update to correct this vulnerability. More details can be found at:
2015-09-15 - Vulnerability reported to vendor
2016-02-05 - Coordinated public release of advisory
CreditThis vulnerability was discovered by: