Advantech iView LinksTable exportLinks Directory Traversal Remote Code Execution Vulnerability

July 16th, 2020
ZDI-20-847 ZDI-CAN-10630

CVE ID

CVE-2020-14507

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 exportLinks method of the LinksTable class. The issue results from the lack of proper validation of a user-supplied path prior to using it in file operations. An attacker can leverage this in conjunction with other vulnerabilities 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-20-196-33

Disclosure Timeline

  • 2020-04-24 - Vulnerability reported to vendor
  • 2020-07-16 - Coordinated public release of advisory

Credit

rgod

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