CVE-2023-5372: nas326 Command Injection — Fix

Description

The post-authentication command injection vulnerability in Zyxel NAS326 firmware versions through V5.21(AAZF.15)C0 and NAS542 firmware versions through V5.21(ABAG.12)C0 could allow an authenticated attacker with administrator privileges to execute some operating system (OS) commands by sending a crafted query parameter attached to the URL of an affected device’s web management interface.

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CVSS v3.1 Score

7.2

HIGH

CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

Weakness Type (CWE)

CWE-78 OS Command Injection

Affected Products

Vendor	Product	Versions
zyxel	nas326_firmware	< 5.21\(aazf.16\)c0
zyxel	nas326	All
zyxel	nas542_firmware	< 5.21\(abag.13\)c0
zyxel	nas542	All

References

Advisories & Patches

https://www.zyxel.com/global/en/support/security-advisories/zyxel-security-advisory-for-post-authentication-command-injection-vulnerability-in-nas-products-01-30-2024 https://www.zyxel.com/global/en/support/security-advisories/zyxel-security-advisory-for-post-authentication-command-injection-vulnerability-in-nas-products-01-30-2024

Frequently Asked Questions

What is CVE-2023-5372? +

The post-authentication command injection vulnerability in Zyxel NAS326 firmware versions through V5.21(AAZF.15)C0 and NAS542 firmware versions through V5.21(ABAG.12)C0 could allow an authenticated attacker with administrator privileges to execute some operating system (OS) commands by sending a crafted query parameter attached to the URL of an affected device’s web management interface. It has a CVSS v3.1 base score of 7.2 (HIGH).

How severe is CVE-2023-5372? +

CVE-2023-5372 has a CVSS v3.1 score of 7.2 out of 10, rated HIGH. This is a high-severity vulnerability that should be prioritized for patching.

What products are affected by CVE-2023-5372? +

CVE-2023-5372 affects products from zyxel, specifically: nas326, nas326_firmware, nas542, nas542_firmware. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2023-5372? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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