Vulnerability identifier: #VU11777

Vulnerability risk: High

CVSSv3.1: 8.7 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2018-8834

CWE-ID: CWE-122

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
CX-One
Server applications / Frameworks for developing and running applications
CX-FLnet
Server applications / Application servers
CX-Protocol
Server applications / Application servers
CX-Programmer
Server applications / Application servers
Network Configurator
Server applications / Application servers
CX-Server
Web applications / Other software
Switch Box Utility
Web applications / Other software

Vendor: Omron

Description
The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The weakness exists due to heap-based buffer overflow. A remote attacker can parse specially crafted project files and execute arbitrary code.

Successful exploitation of the vulnerability may result in system compromise.

Mitigation
Update CX-FLnet to 1.10, CX-Protocol to 1.993, CX-Programmer to 9.66, Common Module including CX-Server to 5.0.23, Network Configurator to 3.64 and Switch Box Utility to 1.69.

Vulnerable software versions

CX-One: 4.42

CX-FLnet: 1.00

CX-Protocol: 1.992

CX-Programmer: 9.65

CX-Server: 5.0.22

Network Configurator: 3.63

Switch Box Utility: 1.68

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External links
http://ics-cert.us-cert.gov/advisories/ICSA-18-100-02

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.