OS Command Injection in Zyxel NAS products



Published: 2023-05-30
Risk Low
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2023-27988
CWE-ID CWE-78
Exploitation vector Network
Public exploit N/A
Vulnerable software
Subscribe 		NAS326
Hardware solutions / Routers for home users

NAS540
Hardware solutions / Routers for home users

NAS542
Hardware solutions / Routers for home users

Vendor ZyXEL Communications Corp.

Security Bulletin

This security bulletin contains one low risk vulnerability.

1) OS Command Injection

EUVDB-ID: #VU76619

Risk: Low

CVSSv3.1:

CVE-ID: CVE-2023-27988

CWE-ID:

Exploit availability:

Description

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

The vulnerability exists due to improper input validation in the web management interface. A remote administrator 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

NAS326: 5.21(AAZF.12)C0

NAS540: 5.21(AATB.9)C0

NAS542: 5.21(ABAG.9)C0

Fixed software versions

CPE2.3 External links

http://www.zyxel.com/global/en/support/security-advisories/zyxel-security-advisory-for-post-authentication-command-injection-vulnerability-in-nas-products


Q & A

Can this vulnerability be exploited remotely?

How the attacker can exploit this vulnerability?

Is there known malware, which exploits this vulnerability?



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