Advisory Details

April 11th, 2018

OMRON CX-One CX-FLnet Node Name Heap-based Buffer Overflow Remote Code Execution Vulnerability

ZDI-18-290
ZDI-CAN-5462

CVE ID CVE-2018-8834
CVSS SCORE 6.8, (AV:N/AC:M/Au:N/C:P/I:P/A:P)
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. 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 processing of FLN files. When parsing the Node Name field, the process does not properly validate the length of user-supplied data prior to copying it to a heap-based buffer. An attacker can leverage this vulnerability to execute code under 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-18-100-02
DISCLOSURE TIMELINE
  • 2017-12-08 - Vulnerability reported to vendor
  • 2018-04-11 - Coordinated public release of advisory
  • 2018-04-11 - Advisory Updated
CREDIT rgod
BACK TO ADVISORIES