Advisory Details

January 5th, 2018

Advantech WebAccess mSignin SQL Injection Remote Code Execution Vulnerability

ZDI-18-028
ZDI-CAN-4996

CVE ID CVE-2017-16716
CVSS SCORE 6.8, (AV:N/AC:M/Au:N/C:P/I:P/A:P)
AFFECTED VENDORS Advantech
AFFECTED PRODUCTS WebAccess
TREND MICRO CUSTOMER PROTECTION Trend Micro TippingPoint IPS customers are protected against this vulnerability by Digital Vaccine protection filter ID 29543. For further product information on the TippingPoint IPS: http://www.tippingpoint.com
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 mSignin.asp. The issue results from the lack of proper validation of a user-supplied string before using it to construct SQL queries. An attacker can leverage this vulnerability to execute code under the context of the web service.

ADDITIONAL DETAILS Advantech has issued an update to correct this vulnerability. More details can be found at:
https://ics-cert.us-cert.gov/advisories/ICSA-18-004-02
DISCLOSURE TIMELINE
  • 2017-08-04 - Vulnerability reported to vendor
  • 2018-01-05 - Coordinated public release of advisory
CREDIT Steven Seeley (mr_me) of Offensive Security
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