Vulnerability identifier: #VU52011

Vulnerability 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

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
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

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.

Is there known malware, which exploits this vulnerability?

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