Advisory Details

February 26th, 2021

Fatek Automation FvDesigner FPJ File Parsing Uninitialized Pointer Remote Code Execution Vulnerability

ZDI-21-259
ZDI-CAN-11998

CVE ID CVE-2021-22670
CVSS SCORE 7.8, AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
AFFECTED VENDORS Fatek Automation
AFFECTED PRODUCTS FvDesigner
VULNERABILITY DETAILS

This vulnerability allows remote attackers to execute arbitrary code on affected installations of Fatek Automation FvDesigner. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file.

The specific flaw exists within the parsing of FPJ files. The issue results from the lack of proper initialization of a pointer prior to accessing it. An attacker can leverage this vulnerability to execute code in the context of the current process.

ADDITIONAL DETAILS Fatek Automation has issued an update to correct this vulnerability. More details can be found at:
https://us-cert.cisa.gov/ics/advisories/icsa-21-056-02
DISCLOSURE TIMELINE
  • 2020-11-05 - Vulnerability reported to vendor
  • 2021-02-26 - Coordinated public release of advisory
CREDIT Francis Provencher {PRL}
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