#VU22419 Access of Uninitialized Pointer in Phoenix Contact GmbH products - CVE-2019-12870

Vulnerability identifier: #VU22419

Vulnerability risk: High

CVSSv4.0: 5.7 [CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber]

CVE-ID: CVE-2019-12870

CWE-ID: CWE-824

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 execute arbitrary code on the target system.

The vulnerability exists due to access of uninitialized pointer 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.

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

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External links
https://cert.vde.com/en-us/advisories/vde-2019-014
https://www.zerodayinitiative.com/advisories/ZDI-19-575/

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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.