CVE-2020-12498

Phoenix Contact Automation Worx <= 1.87: out-of-bounds read remote code execution

Severity Score

7.8

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

mwe file parsing in Phoenix Contact PC Worx and PC Worx Express version 1.87 and earlier is vulnerable to out-of-bounds read remote code execution. Manipulated PC Worx projects could lead to a remote code execution due to insufficient input data validation.

El análisis de archivos mwe en Phoenix Contact PC Worx y PC Worx Express versiones 1.87 y anteriores, es vulnerable a una ejecución de código remota de lectura fuera de límites. Los proyectos manipulados de PC Worx podría conllevar a una ejecución de código remota debido a una comprobación de datos de entrada insuficiente

This vulnerability allows remote attackers to execute arbitrary code on affected installations of Phoenix Contact Automationworx. 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 MWE files by the PC WORX and PC WORX Express executables. 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 vulnerability to execute code in the context of the current process.

*Credits: reported by mdm working with Trend Micro Zero Day Initiative, Phoenix Contact reported to CERT@VDE

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

2020-04-30 CVE Reserved
2020-07-01 CVE Published
2024-04-20 EPSS Updated
2024-08-04 CVE Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-121: Stack-based Buffer Overflow
CWE-125: Out-of-bounds Read

CAPEC

References (2)

URL	Tag	Source
https://www.zerodayinitiative.com/advisories/ZDI-20-826	Third Party Advisory

URL	Date	SRC

URL	Date	SRC

URL	Date	SRC
https://cert.vde.com/de-de/advisories/vde-2020-023	2020-07-10

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Phoenixcontact Search vendor "Phoenixcontact"		Pc Worx Search vendor "Phoenixcontact" for product "Pc Worx"				< 1.87 Search vendor "Phoenixcontact" for product "Pc Worx" and version " < 1.87"		-		Affected
Phoenixcontact Search vendor "Phoenixcontact"		Pc Worx Express Search vendor "Phoenixcontact" for product "Pc Worx Express"				<= 1.87 Search vendor "Phoenixcontact" for product "Pc Worx Express" and version " <= 1.87"		-		Affected