Stored cross-site scripting in A1 WLAN Box ADB VV2220v2 modem

1) Stored cross-site scripting

EUVDB-ID: #VU24775

Risk: Low

CVSSv3.1: 5.1 [CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:L/I:L/A:N/E:U/RL:U/RC:C]

CVE-ID: CVE-2020-8090

CWE-ID: CWE-79 - Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

Exploit availability: No

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 Username field in the Storage Service settings. A remote administrator can permanently inject 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.

Mitigation

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

Vulnerable software versions

WLAN Box ADB VV2220v2: All versions

External links

http://sku11army.blogspot.com/2020/01/a1-modem-wlan-box-adb-vv2220.html

Q & A

Can this vulnerability be exploited remotely?

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

How the attacker can exploit this vulnerability?

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

Is there known malware, which exploits this vulnerability?

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