CVE-2020-12018

Advantech WebAccess/SCADA DrawSrv IOCTL 0x00002722 Out-Of-Bounds Read Information Disclosure Vulnerability

Severity Score

7.5

*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 out-of-bounds vulnerability exists that may allow access to unauthorized data.

Advantech WebAccess Node, versiones 8.4.4 y anteriores, versión 9.0.0. Se presenta una vulnerabilidad de lectura fuera de límites que puede permitir el acceso a datos no autorizados.

This vulnerability allows remote attackers to disclose sensitive information on affected installations of Advantech WebAccess/SCADA. Authentication is not required to exploit this vulnerability.
The specific flaw exists within the implementation of IOCTL 0x00002722 in DrawSrv.dll. The issue results from the lack of proper validation of user-supplied data, which can result in a read past the end of an allocated buffer. An attacker can leverage this in conjunction with other vulnerabilities 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

None

Availability

None

Attack Vector

Network

Attack Complexity

Low

Authentication

None

Confidentiality

Partial

Integrity

None

Availability

None

* 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
2024-05-15 EPSS Updated
2024-08-04 CVE Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-125: Out-of-bounds Read

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-20-628	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