Privilege escalation in Advantech WebAccess Node



Published: 2020-09-21
Risk Low
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2020-16202
CWE-ID CWE-264
Exploitation vector Local
Public exploit N/A
Vulnerable software
Subscribe
WebAccess Scada Node
Server applications / SCADA systems

Vendor Advantech Co., Ltd

Security Bulletin

This security bulletin contains one low risk vulnerability.

1) Permissions, Privileges, and Access Controls

EUVDB-ID: #VU46825

Risk: Low

CVSSv3.1: 6.8 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2020-16202

CWE-ID: CWE-264 - Permissions, Privileges, and Access Controls

Exploit availability: No

Description

The vulnerability allows a local user to escalate privileges on the system.

The vulnerability exists due to the affected product has incorrect permissions set for resources used by specific services, which leads to code execution with system privileges.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

WebAccess Scada Node: before 9.0.1

External links

http://ics-cert.us-cert.gov/advisories/icsa-20-261-01


Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

How the attacker can exploit this vulnerability?

The attacker would have to send a specially crafted request to the affected application in order to exploit this vulnerability.

The attacker would have to login to the system and perform certain actions in order to exploit this vulnerability.

Is there known malware, which exploits this vulnerability?

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



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