Vulnerability identifier: #VU5824

Vulnerability risk: High

CVSSv3.1: 8.3 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2017-5175

CWE-ID: CWE-427

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Advantech WebAccess
Server applications / SCADA systems

Vendor: Advantech Co., Ltd

Description

The vulnerability allows a remote attacker to compromise vulnerable system.

The vulnerability exists due to insecure inclusion of dynamic libraries (.dll), used by Advantech WebAccess. A remote attacker can place a specially crafted .dll file on a public SMB or WebDav share, trick the victim into opening file with  Advantech WebAccess and execute arbitrary code on the target system with privileges of the current user.

Successful exploitation of the vulnerability may allow an attacker to compromise vulnerable system.

Mitigation
Update to version 8.2.

Vulnerable software versions

Advantech WebAccess: 8.1_20151230 - 8.1_20160519

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External links
http://ics-cert.us-cert.gov/advisories/ICSA-17-045-01

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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.