// For flags

CVE-2020-16217

Advantech WebAccess/HMI Designer PM3 File Parsing Double Free Remote Code Execution Vulnerability

Severity Score

7.8
*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

0
*Multiple Sources

Exploited in Wild

-
*KEV

Decision

-
*SSVC
Descriptions

Advantech WebAccess HMI Designer, Versions 2.1.9.31 and prior. A double free vulnerability caused by processing specially crafted project files may allow remote code execution, disclosure/modification of information, or cause the application to crash.

Advantech WebAccess HMI Designer, versiones 2.1.9.31 y anteriores. Una vulnerabilidad de doble liberación causada por el procesamiento de archivos de proyecto especialmente diseñados puede permitir una ejecución de código remota, divulgación y modificación de información o causar que la aplicación se bloquee

This vulnerability allows remote attackers to execute arbitrary code on affected installations of Advantech WebAccess/HMI Designer. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file.
The specific flaw exists within the parsing of PM3 files. The issue results from the lack of validating the existence of an object prior to performing further free operations on the object. An attacker can leverage this vulnerability to execute code in the context of the current process.

*Credits: kimiya
CVSS Scores
Attack Vector
Local
Attack Complexity
Low
Privileges Required
None
User Interaction
Required
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
  • 2020-07-31 CVE Reserved
  • 2020-08-06 CVE Published
  • 2024-07-30 EPSS Updated
  • 2024-08-04 CVE Updated
  • ---------- Exploited in Wild
  • ---------- KEV Due Date
  • ---------- First Exploit
CWE
  • CWE-415: Double Free
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\/hmi Designer
Search vendor "Advantech" for product "Webaccess\/hmi Designer"
 <= 2.1.9.31
Search vendor "Advantech" for product "Webaccess\/hmi Designer" and version " <= 2.1.9.31"
-
Affected