TippingPoint Zero Day Initiative

Advantech WebAccess DBVisitor.dll SQL Injection Remote Code Execution Vulnerability

ZDI-14-077: April 10th, 2014


CVSS Score

Affected Vendors

Affected Products

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 DBVisitor.dll component. Multiple SOAP requests implemented by the component are vulnerable to SQL Injection. These flaws allow an attacker to execute arbitrary SQL statements in the context of the web service and to exfiltrate data (including the account names and password hashes) from the vulnerable product.

Vendor Response

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

Disclosure Timeline

    2014-01-05 - Vulnerability reported to vendor
    2014-04-10 - Coordinated public release of advisory


This vulnerability was discovered by:
    Andrea Micalizzi aka rgod