Remote code execution in Phoenix Contact Automationworx

1) Access of Uninitialized Pointer

EUVDB-ID: #VU54630

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-2021-33542

CWE-ID: CWE-824 - Access of Uninitialized Pointer

Exploit availability: No

Description

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The vulnerability exists due to an uninitialized pointer issue when processing BCP files. A remote attacker can trick a victim to open a specially crafted BCP file 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

Automationworx: 1.87

External links

http://cert.vde.com/en-us/advisories/vde-2021-020
http://www.zerodayinitiative.com/advisories/ZDI-21-782/

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.