Advisory Details

February 10th, 2021

Omron CX-One NCI File Parsing Untrusted Pointer Dereference Remote Code Execution Vulnerability

ZDI-21-182
ZDI-CAN-11807

CVE ID CVE-2020-27259
CVSS SCORE 7.8, AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
AFFECTED VENDORS Omron
AFFECTED PRODUCTS CX-One
VULNERABILITY DETAILS

This vulnerability allows remote attackers to execute arbitrary code on affected installations of Omron CX-One. 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 NCI files by the CX-Position application. The issue results from the lack of proper validation of a user-supplied value prior to dereferencing it as a pointer. An attacker can leverage this vulnerability to execute code in the context of the current process.

ADDITIONAL DETAILS Omron has issued an update to correct this vulnerability. More details can be found at:
https://us-cert.cisa.gov/ics/advisories/icsa-21-007-02
DISCLOSURE TIMELINE
  • 2020-09-04 - Vulnerability reported to vendor
  • 2021-02-10 - Coordinated public release of advisory
CREDIT rgod
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