Advisory Details

June 7th, 2021

Advantech iView runProViewUpgrade Missing Authentication Remote Code Execution Vulnerability

ZDI-21-648
ZDI-CAN-11832

CVE ID CVE-2021-32930
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 runProViewUpgrade action of NetworkServlet, which listens on TCP port 8080 by default. The issue results from the lack of authentication prior to allowing access to functionality. An attacker can leverage this vulnerability to execute code in the context of the service acccount.
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-21-154-01
DISCLOSURE TIMELINE
  • 2021-01-29 - Vulnerability reported to vendor
  • 2021-06-07 - Coordinated public release of advisory
CREDIT Selim Enes Karaduman (@Enesdex)
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