Advisory Details

April 8th, 2020

Advantech WebAccess/NMS DBUtil SQL Injection Information Disclosure Vulnerability

ZDI-20-419
ZDI-CAN-9793

CVE ID CVE-2020-10617
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/NMS
VULNERABILITY DETAILS

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

The specific flaw exists within the processing of calls to the getDeviceOidStrT method of the DBUtil class. When parsing the deviceModel element of the jsonString parameter of the TpVtSets endpoint, the process does not properly validate a user-supplied string before using it to construct SQL queries. An attacker can leverage this vulnerability to disclose file contents in the context of SYSTEM.

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-20-098-01
DISCLOSURE TIMELINE
  • 2019-12-03 - Vulnerability reported to vendor
  • 2020-04-08 - Coordinated public release of advisory
CREDIT rgod of 9sg
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