Advisory Details

May 8th, 2020

Advantech WebAccess/SCADA BwWebSvc IOCTL 0x00013c71 SQL Injection Information Disclosure Vulnerability

ZDI-20-613
ZDI-CAN-9882

CVE ID CVE-2020-12014
CVSS SCORE 7.5, (AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N)
AFFECTED VENDORS Advantech
AFFECTED PRODUCTS WebAccess/SCADA
VULNERABILITY DETAILS

This vulnerability allows remote attackers to disclose sensitive information on affected installations of Advantech WebAccess/SCADA. Authentication is not required to exploit this vulnerability.

The specific flaw exists within the implementation of IOCTL 0x00013c71 in BwWebSvc.dll. 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 disclose stored credentials, leading to further compromise.

ADDITIONAL DETAILS Advantech has issued an update to correct this vulnerability. More details can be found at:
https://www.us-cert.gov/ics/advisories/icsa-20-128-36
DISCLOSURE TIMELINE
  • 2020-01-21 - Vulnerability reported to vendor
  • 2020-05-08 - Coordinated public release of advisory
CREDIT Z0mb1E
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