Vulnerability identifier: #VU27648

Vulnerability risk: Low

CVSSv3.1: 3.8 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2020-12018

CWE-ID: CWE-125

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 gain access to potentially sensitive information.

The vulnerability exists due to a boundary condition within the implementation of IOCTL 0x00002722 in DrawSrv.dll. A remote attacker can create a specially crafted web page, trick the victim into opening it, trigger out-of-bounds read error and read contents of memory on the system.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Advantech WebAccess: 6.0-2007.06.05 - 9.0.0

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External links
http://www.zerodayinitiative.com/advisories/ZDI-20-630/

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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.