CVE-2020-12022

Advantech WebAccess/SCADA DATACORE IOCTL 0x0000521e Improper Validation of Array Index Remote Code Execution Vulnerability

Severity Score

9.8

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

Advantech WebAccess Node, Version 8.4.4 and prior, Version 9.0.0. An improper validation vulnerability exists that could allow an attacker to inject specially crafted input into memory where it can be executed.

Advantech WebAccess Node, versiones 8.4.4 y anteriores, versión 9.0.0. Se presenta una vulnerabilidad de comprobación inapropiada que podría permitir a un atacante inyectar información especialmente diseñada dentro de la memoria donde pueda ser ejecutada.

This vulnerability allows remote attackers to execute arbitrary code on affected installations of Advantech WebAccess/SCADA. Authentication is not required to exploit this vulnerability.
The specific flaw exists within the implementation of IOCTL 0x0000521e in DATACORE.exe. The issue results from the lack of proper validation of user-supplied data, which can result in a memory access past the end of an allocated buffer. An attacker can leverage this vulnerability to execute code in the context of Administrator.

*Credits: Z0mb1E

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Attack Vector

Network

Attack Complexity

Low

Authentication

None

Confidentiality

Partial

Integrity

Partial

Availability

Partial

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2020-04-21 CVE Reserved
2020-05-08 CVE Published
2024-05-01 EPSS Updated
2024-08-04 CVE Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-129: Improper Validation of Array Index

CAPEC

References (2)

URL	Tag	Source
https://www.us-cert.gov/ics/advisories/icsa-20-128-01	Third Party Advisory
https://www.zerodayinitiative.com/advisories/ZDI-20-598	Third Party Advisory

URL	Date	SRC

URL	Date	SRC

URL	Date	SRC

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Advantech Search vendor "Advantech"		Webaccess Search vendor "Advantech" for product "Webaccess"				<= 8.4.4 Search vendor "Advantech" for product "Webaccess" and version " <= 8.4.4"		-		Affected
Advantech Search vendor "Advantech"		Webaccess Search vendor "Advantech" for product "Webaccess"				9.0.0 Search vendor "Advantech" for product "Webaccess" and version "9.0.0"		-		Affected