Advisory Details

June 30th, 2022

Advantech iView MenuServlet getUserPrefMenuFragment page Directory Traversal Information Disclosure Vulnerability

ZDI-22-933
ZDI-CAN-16783

CVE ID CVE-2022-2139
CVSS SCORE 6.5, (AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N)
AFFECTED VENDORS Advantech
AFFECTED PRODUCTS iView
VULNERABILITY DETAILS

This vulnerability allows remote attackers to disclose sensitive information on affected installations of Advantech iView. Although authentication is required to exploit this vulnerability, the existing authentication mechanism can be bypassed.

The specific flaw exists within the MenuServlet endpoint, which listens on TCP port 8080 by default. When parsing the page element of the getUserPrefMenuFragment action, the process does not properly validate a user-supplied path prior to using it in file operations. An attacker can leverage this vulnerability to disclose information in the context of SYSTEM.

ADDITIONAL DETAILS Advantech has issued an update to correct this vulnerability. More details can be found at:
https://www.cisa.gov/uscert/ics/advisories/icsa-22-179-03
DISCLOSURE TIMELINE
  • 2022-03-23 - Vulnerability reported to vendor
  • 2022-06-30 - Coordinated public release of advisory
CREDIT rgod
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