// For flags

CVE-2019-10987

Advantech WebAccess Node webvrpcs viewsrv Out-Of-Bounds Write Remote Code Execution Vulnerability

Severity Score

8.8
*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

0
*Multiple Sources

Exploited in Wild

-
*KEV

Decision

-
*SSVC
Descriptions

In WebAccess/SCADA Versions 8.3.5 and prior, multiple out-of-bounds write vulnerabilities are caused by a lack of proper validation of the length of user-supplied data. Exploitation of these vulnerabilities may allow remote code execution.

En WebAccess/SCADA versiones 8.3.5 y anteriores, múltiples vulnerabilidades de escritura fuera de límites son provocadas por la falta de una validación correcta de la longitud de los datos proporcionados. La explotación de estas vulnerabilidades podría provocar la ejecución remota de código.

This vulnerability allows remote attackers to execute arbitrary code on affected installations of Advantech WebAccess Node. Authentication is not required to exploit this vulnerability.
The specific flaw exists within the implementation of the 0x2723 IOCTL in the webvrpcs process. The issue results from the lack of proper validation of user-supplied data, which can result in a write past the end of an allocated buffer. An attacker can leverage this vulnerability to execute code in the context of Administrator.

*Credits: Natnael Samson(@NattiSamson)
CVSS Scores
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
Required
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High
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
Medium
Authentication
None
Confidentiality
Partial
Integrity
Partial
Availability
Partial
* 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-787: Out-of-bounds Write
CAPEC
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