TippingPoint Zero Day Initiative

Advantech WebAccess odbcPg4 Absolute Path Traversal File Denial of Service Vulnerability

ZDI-17-322: May 4th, 2017


CVSS Score

Affected Vendors

Affected Products

TippingPoint™ IPS Customer Protection

TippingPoint IPS customers are protected against this vulnerability by Digital Vaccine protection filter ID 25380. For further product information on the TippingPoint IPS:

Vulnerability Details

This vulnerability allows remote attackers to cause a denial of service condition on vulnerable installations of Advantech WebAccess. Authentication is required to exploit this vulnerability.

The specific flaw exists within odbcPg4.asp. The issue results from the lack of proper validation of a user-supplied path prior to using it in file operations. An attacker can leverage this vulnerability to overwrite key web files which will disable functionality on the target machine.

Vendor Response

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

Disclosure Timeline

    2016-10-17 - Vulnerability reported to vendor
    2017-05-04 - Coordinated public release of advisory


This vulnerability was discovered by:
    Zhou Yu