#VU12759 Improper privilege management in Advantech Co., Ltd products - CVE-2018-8841

Vulnerability identifier: #VU12759

Vulnerability risk: Low

CVSSv4.0: 1.3 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2018-8841

CWE-ID: CWE-269

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 authenticated attacker to write arbitrary files on the target system.

The weakness exists due to improper privilege management. A remote attacker can modify files when read access should only be given to the user.

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
https://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 authenticated user via the Internet.

Is there known malware, which exploits this vulnerability?

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