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National Vulnerability Database

National Vulnerability Database

NVD

National Vulnerability Database
  1. Vulnerabilities

CVE-2021-33542 Detail

Description

Phoenix Contact Classic Automation Worx Software Suite in Version 1.87 and below is affected by a remote code execution vulnerability. Manipulated PC Worx or Config+ projects could lead to a remote code execution when unallocated memory is freed because of incompletely initialized data. The attacker needs to get access to an original bus configuration file (*.bcp) to be able to manipulate data inside. After manipulation the attacker needs to exchange the original file by the manipulated one on the application programming workstation. Availability, integrity, or confidentiality of an application programming workstation might be compromised by attacks using these vulnerabilities. Automated systems in operation which were programmed with one of the above-mentioned products are not affected.


Metrics

 
NVD enrichment efforts reference publicly available information to associate vector strings. CVSS information contributed by other sources is also displayed.
CVSS 3.x Severity and Vector Strings:

NIST CVSS score
NIST: NVD
Base Score:  7.0 HIGH
Vector:  CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H

Nist CVSS score does not match with CNA score
CNA:  CERT VDE
Base Score:  7.8 HIGH
Vector:  CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

References to Advisories, Solutions, and Tools

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Hyperlink Resource
https://cert.vde.com/en-us/advisories/vde-2021-020 Third Party Advisory 
https://cert.vde.com/en-us/advisories/vde-2021-020 Third Party Advisory 
https://www.zerodayinitiative.com/advisories/ZDI-21-782/ Third Party Advisory  VDB Entry 
https://www.zerodayinitiative.com/advisories/ZDI-21-782/ Third Party Advisory  VDB Entry 

Weakness Enumeration

CWE-ID CWE Name Source
CWE-824 Access of Uninitialized Pointer cwe source acceptance level NIST   CERT VDE  

Known Affected Software Configurations Switch to CPE 2.2

Configuration 1 ( hide )
 cpe:2.3:a:phoenixcontact:config\+:*:*:*:*:*:*:*:*
   Show Matching CPE(s) 		Up to (including)
1.87
 cpe:2.3:a:phoenixcontact:pc_worx:*:*:*:*:*:*:*:*
   Show Matching CPE(s) 		Up to (including)
1.87
 cpe:2.3:a:phoenixcontact:pc_worx_express:*:*:*:*:*:*:*:*
   Show Matching CPE(s) 		Up to (including)
1.87

Denotes Vulnerable Software
Are we missing a CPE here? Please let us know.

Change History

5 change records found show changes

Quick Info

CVE Dictionary Entry:
CVE-2021-33542
NVD Published Date:
06/25/2021
NVD Last Modified:
11/21/2024
Source:
CERT VDE