Advisory Details

August 27th, 2020

Advantech iView NetworkServlet findSummaryUpdateDeviceListExport Directory Traversal Remote Code Execution Vulnerability

ZDI-20-1089
ZDI-CAN-10992

CVE ID CVE-2020-16245
CVSS SCORE 9.8, (AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H)
AFFECTED VENDORS Advantech
AFFECTED PRODUCTS iView
VULNERABILITY DETAILS

This vulnerability allows remote attackers to execute arbitrary code on affected installations of Advantech iView. Authentication is not required to exploit this vulnerability.

The specific flaw exists within the processing of calls to the findSummaryUpdateDeviceListExport method of the NetworkServlet class. When parsing the filename parameter, the process does not properly validate a user-supplied path prior to using it in file operations. An attacker can leverage this vulnerability to execute code in the context of SYSTEM.

ADDITIONAL DETAILS Advantech has issued an update to correct this vulnerability. More details can be found at:
https://us-cert.cisa.gov/ics/advisories/icsa-20-238-01
DISCLOSURE TIMELINE
  • 2020-07-07 - Vulnerability reported to vendor
  • 2020-08-27 - Coordinated public release of advisory
CREDIT KPC
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