TippingPoint Zero Day Initiative
 

Advantech WebAccess DelIcon Directory Traversal File Deletion Vulnerability

ZDI-18-056: January 5th, 2018

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 29684. For further product information on the TippingPoint IPS:

Vulnerability Details


This vulnerability allows remote attackers to delete arbitrary files on vulnerable installations of Advantech WebAccess. Authentication is not required to exploit this vulnerability.

The specific flaw exists within the DelIcon method in gmicons.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 delete files accessible to the web service.

Vendor Response

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

Disclosure Timeline

    2017-08-07 - Vulnerability reported to vendor
    2018-01-05 - Coordinated public release of advisory

Credit

This vulnerability was discovered by:
    Zhou Yu