Multiple vulnerabilities in NEC Corporation Aterm WF1200CR, WG1200CR, WG2600HS and WX3000HP



Published: 2021-04-09
Risk Medium
Patch available YES
Number of vulnerabilities 5
CVE-ID CVE-2021-20708
CVE-2021-20709
CVE-2021-20710
CVE-2021-20711
CVE-2021-20712
CWE-ID CWE-78
CWE-354
CWE-79
CWE-284
Exploitation vector Network
Public exploit N/A
Vulnerable software
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Aterm WF1200CR
Hardware solutions / Routers & switches, VoIP, GSM, etc

Aterm WG1200CR
Hardware solutions / Routers & switches, VoIP, GSM, etc

Aterm WG2600HS
Hardware solutions / Routers & switches, VoIP, GSM, etc

Aterm WX3000HP
Hardware solutions / Routers & switches, VoIP, GSM, etc

Vendor NEC Corporation

Security Bulletin

This security bulletin contains information about 5 vulnerabilities.

1) OS Command Injection

EUVDB-ID: #VU52005

Risk: Low

CVSSv3.1: 5.9 [CVSS:3.1/AV:A/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2021-20708

CWE-ID: CWE-78 - Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')

Exploit availability: No

Description

The vulnerability allows a remote user to execute arbitrary shell commands on the target system.

The vulnerability exists due to improper input validation. A remote administrator on the local network can pass specially crafted data to the application and execute arbitrary OS commands on the target system.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Aterm WF1200CR: 1.3.2

Aterm WG1200CR: 1.3.3

Aterm WG2600HS: 1.5.1

External links

http://jvn.jp/en/jp/JVN29739718/index.html
http://jpn.nec.com/security-info/secinfo/nv21-010.html


Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote authenticated privileged user via the local network (LAN).

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.

2) Improper validation of integrity check value

EUVDB-ID: #VU52006

Risk: Low

CVSSv3.1: 5.9 [CVSS:3.1/AV:A/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2021-20709

CWE-ID: CWE-354 - Improper Validation of Integrity Check Value

Exploit availability: No

Description

The vulnerability allows a remote user to compromise the target system.

The vulnerability exists due to improper integrity check. A remote administrator on the local network can send a specially crafted request and execute arbitrary commands on the system.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Aterm WF1200CR: 1.3.2

Aterm WG1200CR: 1.3.3

Aterm WG2600HS: 1.5.1

External links

http://jvn.jp/en/jp/JVN29739718/index.html
http://jpn.nec.com/security-info/secinfo/nv21-010.html


Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote authenticated privileged user via the local network (LAN).

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.

3) Cross-site scripting

EUVDB-ID: #VU52007

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-2021-20710

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 WG2600HS: 1.5.1

External links

http://jvn.jp/en/jp/JVN29739718/index.html
http://jpn.nec.com/security-info/secinfo/nv21-010.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.

4) OS Command Injection

EUVDB-ID: #VU52008

Risk: Medium

CVSSv3.1: 7.7 [CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2021-20711

CWE-ID: CWE-78 - Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')

Exploit availability: No

Description

The vulnerability allows a remote attacker to execute arbitrary shell commands on the target system.

The vulnerability exists due to improper input validation. A remote attacker on the local network can pass specially crafted data to the application and execute arbitrary OS commands on the target system.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Aterm WG2600HS: 1.5.1

External links

http://jvn.jp/en/jp/JVN29739718/index.html
http://jpn.nec.com/security-info/secinfo/nv21-010.html


Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the local network (LAN).

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.

5) Improper access control

EUVDB-ID: #VU52009

Risk: Medium

CVSSv3.1: 4.6 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2021-20712

CWE-ID: CWE-284 - Improper Access Control

Exploit availability: No

Description

The vulnerability allows a remote attacker to gain unauthorized access to otherwise restricted functionality.

The vulnerability exists due to improper access restrictions in the IPv6 firewall function. A remote attacker can access devices connected to the LAN side from the WAN side.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Aterm WG2600HS: 1.5.1

Aterm WX3000HP: 1.1.2

External links

http://jvn.jp/en/jp/JVN29739718/index.html
http://jpn.nec.com/security-info/secinfo/nv21-010.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.



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