Vulnerability identifier: #VU22420

Vulnerability risk: High

CVSSv3.1: 8.1 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:U/RC:C]

CVE-ID: CVE-2019-12871

CWE-ID: CWE-416

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Config+
Client/Desktop applications / Other client software
PC Worx Express
Client/Desktop applications / Other client software
PC Worx
Client/Desktop applications / Other client software

Vendor: Phoenix Contact GmbH

Description

The vulnerability allows a remote attacker to compromise vulnerable system.

The vulnerability exists due to a use-after-free error when parsing the BCP files. A remote attacker can exchange the original PC Worx or Config+ project file with the manipulated one on the application programming workstation and execute arbitrary code on the target system.

Successful exploitation of the vulnerability may allow an attacker to compromise vulnerable system.

Mitigation
Cybersecurity Help is currently unaware of any official solution to address this vulnerability.

Vulnerable software versions

Config+: 1.86

PC Worx Express: 1.86

PC Worx: 1.86

---

External links
http://cert.vde.com/en-us/advisories/vde-2019-014
http://www.zerodayinitiative.com/advisories/ZDI-19-578/

---

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.