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



Published: 2019-06-06
Risk Medium
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2019-10997
CWE-ID CWE-300
Exploitation vector Network
Public exploit N/A
Vulnerable software
Subscribe 		PLCNext AXC F 2152
Server applications / SCADA systems

Vendor Phoenix Contact GmbH

Security Bulletin

This security bulletin contains one medium risk vulnerability.

1) Man-in-the-Middle (MitM) attack

EUVDB-ID: #VU18694

Risk: Medium

CVSSv3.1: 6.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2019-10997

CWE-ID: CWE-300 - Channel Accessible by Non-Endpoint ('Man-in-the-Middle')

Exploit availability: No

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

http://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.

How the attacker can exploit this vulnerability?

The attacker would have to send a specially crafted request to the affected application in order to exploit this vulnerability.

Is there known malware, which exploits this vulnerability?

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



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