Privilege escalation in Advantech WebAccess/SCADA



Published: 2021-04-14
Risk Medium
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2021-22669
CWE-ID CWE-732
Exploitation vector Network
Public exploit N/A
Vulnerable software
Subscribe
WebAccess/SCADA
Server applications / SCADA systems

Vendor Advantech Co., Ltd

Security Bulletin

This security bulletin contains one medium risk vulnerability.

1) Incorrect permission assignment for critical resource

EUVDB-ID: #VU52201

Risk: Medium

CVSSv3.1: 7.7 [CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2021-22669

CWE-ID: CWE-732 - Incorrect Permission Assignment for Critical Resource

Exploit availability: No

Description

The vulnerability allows a remote attacker to compromise the target system.

The vulnerability exists due to incorrect permission assignment on the "Project Management" page. A remote authenticated attacker can update an administrator’s password and gain elevated privileges on the system.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

WebAccess/SCADA: 9.0.1

External links

http://ics-cert.us-cert.gov/advisories/icsa-21-103-02


Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote authenticated user via the Internet.

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.

Is there known malware, which exploits this vulnerability?

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



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