Vulnerability identifier: #VU18691

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-2019-9744

CWE-ID: CWE-384

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
FL NAT SMCS 8TX
Hardware solutions / Routers & switches, VoIP, GSM, etc
FL NAT SMN 8TX
Hardware solutions / Routers & switches, VoIP, GSM, etc
FL NAT SMN 8TX-M-DMG
Hardware solutions / Routers & switches, VoIP, GSM, etc
FL NAT SMN 8TX-M
Hardware solutions / Routers & switches, VoIP, GSM, etc

Vendor: Phoenix Contact GmbH

Description

The vulnerability allows a remote attacker to gain unauthorized access to the web interface.

The vulnerability exists due to improper access restrictions when attackers arriving from the same source IP address as an authenticated user, because this IP address is used as a session identifier. A remote unauthorized attacker can get access to the web interface, which may allow full access to the device configuration.

Mitigation

Vulnerable software versions

FL NAT SMCS 8TX: All versions

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External links
http://www.securityfocus.com/bid/108576
http://cert.vde.com/de-de/advisories/vde-2019-006

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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.