Cross-site scripting in multiple Aterm products

Published: 2021-04-09

Risk	Low
Patch available	YES
Number of vulnerabilities	1
CVE-ID	CVE-2021-20680
CWE-ID	CWE-79
Exploitation vector	Network
Public exploit	N/A
Vulnerable software Subscribe	Aterm WG1900HP2 Hardware solutions / Routers & switches, VoIP, GSM, etc Aterm WG1900HP Hardware solutions / Routers & switches, VoIP, GSM, etc Aterm WG1800HP4 Hardware solutions / Routers & switches, VoIP, GSM, etc Aterm WG1800HP3 Hardware solutions / Routers & switches, VoIP, GSM, etc Aterm WG1200HS3 Hardware solutions / Routers & switches, VoIP, GSM, etc Aterm WG1200HS2 Hardware solutions / Routers & switches, VoIP, GSM, etc Aterm WG1200HP3 Hardware solutions / Routers & switches, VoIP, GSM, etc Aterm WG1200HP2 Hardware solutions / Routers & switches, VoIP, GSM, etc Aterm W1200EX Hardware solutions / Routers & switches, VoIP, GSM, etc Aterm W1200EX-MS Hardware solutions / Routers & switches, VoIP, GSM, etc Aterm WG1200HS Hardware solutions / Routers & switches, VoIP, GSM, etc Aterm WG1200HP Hardware solutions / Routers & switches, VoIP, GSM, etc Aterm WF300HP2 Hardware solutions / Routers & switches, VoIP, GSM, etc Aterm WR8165N Hardware solutions / Routers & switches, VoIP, GSM, etc Aterm W500P Hardware solutions / Routers & switches, VoIP, GSM, etc Aterm W300P Hardware solutions / Routers & switches, VoIP, GSM, etc Aterm WF800HP Hardware solutions / Other hardware appliances
Vendor	NEC Corporation

Security Bulletin

This security bulletin contains one low risk vulnerability.

1) Cross-site scripting

EUVDB-ID: #VU52011

Risk: Low

CVSSv3.1: 5.3 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2021-20680

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. 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.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Aterm WG1900HP2: 1.3.1

Aterm WG1900HP: 2.5.1

Aterm WG1800HP4: 1.3.1

Aterm WG1800HP3: 1.5.1

Aterm WG1200HS3: 1.1.2

Aterm WG1200HS2: 2.5.0

Aterm WG1200HP3: 1.3.1

Aterm WG1200HP2: 2.5.0

Aterm W1200EX: 1.3.1

Aterm W1200EX-MS: 1.3.1

Aterm WG1200HS: All versions

Aterm WG1200HP: All versions

Aterm WF800HP: All versions

Aterm WF300HP2: All versions

Aterm WR8165N: All versions

Aterm W500P: All versions

Aterm W300P: All versions

External links

http://jvn.jp/en/jp/JVN67456944/index.html
http://jpn.nec.com/security-info/secinfo/nv21-008.html
http://www.aterm.jp/support/tech/2020/0708.html

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 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.