TippingPoint Zero Day Initiative
 

Advantech WebAccess Dashboard Viewer FileUploadHandler Unrestricted File Upload Remote Code Execution Vulnerability

ZDI-16-127: February 5th, 2016

CVE ID

CVSS Score

Affected Vendors

Affected Products

TippingPoint™ IPS Customer Protection

TippingPoint IPS customers are protected against this vulnerability by Digital Vaccine protection filter ID 20737. For further product information on the TippingPoint IPS:

Vulnerability Details


This vulnerability allows remote attackers to execute arbitrary code 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 FileUpload script allows unauthenticated callers to upload arbitrary code to directories in the server where the code can be automatically executed under the high-privilege context of the IIS AppPool. An attacker can leverage this vulnerability to execute arbitrary code under the context of SYSTEM.

Vendor Response

Advantech has issued an update to correct this vulnerability. More details can be found at:

Disclosure Timeline

    2015-09-15 - Vulnerability reported to vendor
    2016-02-05 - Coordinated public release of advisory

Credit

This vulnerability was discovered by:
    rgod