Multiple vulnerabilities in NEC Corporation Aterm SA3500G



Published: 2020-12-14
Risk Medium
Patch available YES
Number of vulnerabilities 3
CVE-ID CVE-2020-5635
CVE-2020-5636
CVE-2020-5637
CWE-ID CWE-78
CWE-354
Exploitation vector Local network
Public exploit N/A
Vulnerable software
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Aterm SA3500G
Hardware solutions / Routers & switches, VoIP, GSM, etc

Vendor NEC Corporation

Security Bulletin

This security bulletin contains information about 3 vulnerabilities.

1) OS Command Injection

EUVDB-ID: #VU48958

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-2020-5635

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 unauthenticated attacker on the local network can send a specially crafted request 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 SA3500G: before 3.5.9

External links

http://jvn.jp/en/jp/JVN55917325/index.html
http://jvn.jp/jp/JVN55917325/index.html
http://www.necplatforms.co.jp/product/security_ap/info_20201211.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.

2) OS Command Injection

EUVDB-ID: #VU48959

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-2020-5636

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 send a specially crafted request 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 SA3500G: before 3.5.9

External links

http://jvn.jp/en/jp/JVN55917325/index.html
http://jvn.jp/jp/JVN55917325/index.html
http://www.necplatforms.co.jp/product/security_ap/info_20201211.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) Improper validation of integrity check value

EUVDB-ID: #VU48960

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-2020-5637

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 the software of the affected products does not check the integrity. A remote administrator on the local network can access the management screen of the device and execute a malicious program.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Aterm SA3500G: before 3.5.9

External links

http://jvn.jp/en/jp/JVN55917325/index.html
http://jvn.jp/jp/JVN55917325/index.html
http://www.necplatforms.co.jp/product/security_ap/info_20201211.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.



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