CVE Vulnerability

CVE-2021-33542

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.

5.1 /10

CVSS v2.0 :

V3 Legend

Vector :

Exploitability : 4.9 / Impact : 6.4

Attack Vector

Attack Complexity

Privileges Required

User Interaction

Confidentiality Impact PARTIAL

Integrity Impact PARTIAL

Availability Impact PARTIAL

Scope

7 /10

CVSS v3.0 : HIGH

V3 Legend

Vector :

Exploitability : 1 / Impact : 5.9

Attack Vector LOCAL

Attack Complexity HIGH

Privileges Required NONE

User Interaction REQUIRED

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References
Link Resource
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
Configurations

Configuration 1

cpe:2.3:a:phoenixcontact:pc_worx_express:*:*:*:*:*:*:*:*
cpe:2.3:a:phoenixcontact:config+:*:*:*:*:*:*:*:*
cpe:2.3:a:phoenixcontact:pc_worx:*:*:*:*:*:*:*:*
Information

Published : 2021-06-25 07:15

Updated : 2021-09-20 06:51

NVD link : CVE-2021-33542

Mitre link : CVE-2021-33542

Products Affected
No products.
CWE
CWE-824

Access of Uninitialized Pointer