Advantech iView UserServlet performDeleteUser Missing Authentication for Critical Function Information Disclosure Vulnerability

July 16th, 2020
ZDI-20-859 ZDI-CAN-10699

CVE ID

CVE-2020-14501

CVSS Score

8.2 AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:L

Affected Vendors

Advantech

Affected Products

iView

Vulnerability Details

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

The specific flaw exists within the UserServlet class. The issue results from the lack of authentication prior to allowing alterations to the system configuration. 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://us-cert.cisa.gov/ics/advisories/icsa-20-196-33

Disclosure Timeline

  • 2020-04-03 - Vulnerability reported to vendor
  • 2020-07-16 - Coordinated public release of advisory

Credit

rgod

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