Advisory Details

April 15th, 2019

OMRON CX-One CX-Programmer CXP File Parsing Use-After-Free Remote Code Execution Vulnerability

ZDI-19-344
ZDI-CAN-6609

CVE ID CVE-2019-6556
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 vulnerable installations of OMRON CX-One CX-Programmer. 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 CXP files. The issue results from the lack of validating the existence of an object prior to performing operations on the object. 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://ics-cert.us-cert.gov/advisories/ICSA-19-094-01
DISCLOSURE TIMELINE
  • 2018-07-05 - Vulnerability reported to vendor
  • 2019-04-15 - Coordinated public release of advisory
CREDIT Esteban Ruiz (mr_me) of Source Incite
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