#VU80552 XML Entity Expansion in Phoenix Contact GmbH products - CVE-2023-3569

Vulnerability identifier: #VU80552

Vulnerability risk: Low

CVSSv4.0: 4.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2023-3569

CWE-ID: CWE-776

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
TC ROUTER 3002T-4G
Hardware solutions / Routers & switches, VoIP, GSM, etc
TC ROUTER 3002T-4G ATT
Hardware solutions / Routers & switches, VoIP, GSM, etc
TC ROUTER 3002T-4G VZW
Hardware solutions / Routers & switches, VoIP, GSM, etc
TC CLOUD CLIENT 1002-4G
Hardware solutions / Routers & switches, VoIP, GSM, etc
TC CLOUD CLIENT 1002-4G ATT
Hardware solutions / Routers & switches, VoIP, GSM, etc
TC CLOUD CLIENT 1002-4G VZW
Hardware solutions / Routers & switches, VoIP, GSM, etc
CLOUD CLIENT 1101T-TX/TX
Hardware solutions / Routers & switches, VoIP, GSM, etc

Vendor: Phoenix Contact GmbH

Description

The vulnerability allows a remote user to perform a denial o service (DoS) attack.

The vulnerability exists due to improper restrictions on XML entities. A remote administrator can upload a specially crafted XML file and cause a denial of service condition on the target system.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

TC ROUTER 3002T-4G: before 2.07.2

TC ROUTER 3002T-4G ATT: before 2.07.2

TC ROUTER 3002T-4G VZW: before 2.07.2

TC CLOUD CLIENT 1002-4G: before 2.07.2

TC CLOUD CLIENT 1002-4G ATT: before 2.07.2

TC CLOUD CLIENT 1002-4G VZW: before 2.07.2

CLOUD CLIENT 1101T-TX/TX: before 2.06.10

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External links
https://cert.vde.com/en/advisories/VDE-2023-017
https://seclists.org/fulldisclosure/2023/Aug/12
https://packetstormsecurity.com/files/174152/Phoenix-Contact-TC-Cloud-TC-Router-2.x-XSS-Memory-Consumption.html

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote authenticated privileged user via the Internet.

Is there known malware, which exploits this vulnerability?

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