Vulnerability identifier: #VU24031

Vulnerability risk: Low

CVSSv3.1: 5.8 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N/E:P/RL:U/RC:C]

CVE-ID: CVE-2019-18842

CWE-ID: CWE-79

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
USR-WIFI232-S
Hardware solutions / Firmware
USR-WIFI232-T
Hardware solutions / Firmware
USR-WIFI232-G2
Hardware solutions / Firmware
USR-WIFI232-H
Hardware solutions / Firmware

Vendor: Jinan USR IOT

Description

The disclosed vulnerability allows a remote attacker to perform cross-site scripting (XSS) attacks.

The vulnerability exists due to insufficient sanitization of user-supplied data in the configuration web interface. A remote attacker can trick the victim to follow a specially crafted link and execute arbitrary HTML and script code in user's browser in context of vulnerable website.

Successful exploitation of this vulnerability may allow a remote attacker to steal potentially sensitive information, change appearance of the web page, perform phishing and drive-by-download attacks, leak credentials of the Wi-Fi access point the module is logged into and the web interface login credentials by opening a Wi-Fi access point nearby with a malicious SSID.

Mitigation
Cybersecurity Help is currently unaware of any official solution to address this vulnerability.

Vulnerable software versions

USR-WIFI232-S: 1.2.2

USR-WIFI232-T: 1.2.2

USR-WIFI232-G2: 1.2.2

USR-WIFI232-H: 1.2.2

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External links
http://www.tildeho.me/theres-javascript-in-my-power-plug/

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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. However, proof of concept for this vulnerability is available.