Advisory Details

February 8th, 2019

OMRON CX-Supervisor SCS File Parsing Out-Of-Bounds Read Information Disclosure Vulnerability

ZDI-19-173
ZDI-CAN-7464

CVE ID CVE-2018-19020
CVSS SCORE 3.3, AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N
AFFECTED VENDORS Omron
AFFECTED PRODUCTS CX-Supervisor
VULNERABILITY DETAILS

This vulnerability allows remote attackers to disclose sensitive information on vulnerable installations of OMRON CX-Supervisor. 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 SCS files. The issue results from the lack of proper validation of user-supplied data, which can result in a read past the end of an allocated buffer. An attacker can leverage this in conjunction with other vulnerabilities to execute arbitrary 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-19-017-01
DISCLOSURE TIMELINE
  • 2018-11-08 - Vulnerability reported to vendor
  • 2019-02-08 - Coordinated public release of advisory
CREDIT Michael DePlante of Trend Micro Zero Day Initiative
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