#VU18694 Man-in-the-Middle (MitM) attack in PLCNext AXC F 2152 - CVE-2019-10997


Vulnerability identifier: #VU18694

Vulnerability risk: Medium

CVSSv4.0: 6.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2019-10997

CWE-ID: CWE-300

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
PLCNext AXC F 2152
Server applications / SCADA systems

Vendor: Phoenix Contact GmbH

Description

The vulnerability allows a remote attacker to conduct man-in-the-middle attack.

The vulnerability exists due to a denial of service condition when PLC service is crashed. An attacker trying to connect to the device using a man-in-the-middle setup may crash the PLC service, so the device must then be rebooted, or the PLC service must be restarted manually via Linux shell. 

Vulnerability affects following PLCNext AXC F 2152 products:
  • AXC F 2152: article number 2404267
  • AXC F 2152: article number 1046568 (Starterkit)

Mitigation
Install updates from vendor's website.

Vulnerable software versions

PLCNext AXC F 2152: 1.0.0 - 1.20

External links
https://ics-cert.us-cert.gov/advisories/ICSA-19-155-01

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.


Latest bulletins with this vulnerability


Man-in-the-Middle (MitM) attack in PLCNext AXC F 2152