Advisory Details

April 11th, 2018

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

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 Version 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

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