Vulnerability identifier: #VU12754

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-2018-7499

CWE-ID: CWE-121

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Advantech WebAccess
Server applications / SCADA systems
WebAccess Dashboard
Server applications / SCADA systems
WebAccess Scada Node
Server applications / SCADA systems
WebAccess/NMS
Server applications / Remote management servers, RDP, SSH

Vendor: Advantech Co., Ltd

Description

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

The weakness exists due to stack-based buffer overflow. A remote attacker can trigger memory corruption and execute arbitrary code.

Successful exploitation of the vulnerability may result in system compromise.

Mitigation
Update WebAccess Scada Note to version 8.3.1.

Vulnerable software versions

Advantech WebAccess: 8.2_20170817 - 8.3

WebAccess Dashboard: 2.0.15

WebAccess Scada Node: 8.3.0

WebAccess/NMS: 2.0.3

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External links
http://ics-cert.us-cert.gov/advisories/ICSA-18-135-01

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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.