CVE-2019-10983

Advantech WebAccess Node viewsrv 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

In WebAccess/SCADA Versions 8.3.5 and prior, an out-of-bounds read vulnerability is caused by a lack of proper validation of user-supplied data. Exploitation of this vulnerability may allow disclosure of information.

En WebAccess/SCADA versiones 8.3.5 y anteriores, una vulnerabilidad de lectura fuera de límites se debe por la falta de una validación correcta de la longitud de los datos proporcionados. La explotación de esta vulnerabilidad puede permitir la divulgación de información.

This vulnerability allows remote attackers to disclose sensitive information on affected installations of Advantech WebAccess Node. Authentication is not required to exploit this vulnerability.
The specific flaw exists within viewsrv.dll, which is accessed through the 0x2722 IOCTL in the webvrpcs process. . 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 the Administrator.

*Credits: Mat Powell of Trend Micro Zero Day Initiative

CVSS Scores

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

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

Low

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

2019-04-08 CVE Reserved
2019-06-28 CVE Published
2024-08-04 CVE Updated
2024-11-18 EPSS 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-19-178-05	Third Party Advisory
https://www.zerodayinitiative.com/advisories/ZDI-19-621	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"				<= 8.3.5 Search vendor "Advantech" for product "Webaccess" and version " <= 8.3.5"		-		Affected