Zyxel NAS326/NAS542 up to 5.21 HTTP POST Request os command injection

Summaryinfo

A vulnerability was found in Zyxel NAS326 and NAS542 up to 5.21. It has been declared as critical. This vulnerability affects unknown code of the component HTTP POST Request Handler. Such manipulation leads to os command injection. This vulnerability only affects products that are no longer supported by the maintainer. This vulnerability is traded as CVE-2024-6342. The attack may be launched remotely. There is no exploit available.

Detailsinfo

A vulnerability was found in Zyxel NAS326 and NAS542 up to 5.21. It has been rated as very critical. Affected by this issue is some unknown processing of the component HTTP POST Request Handler. The manipulation with an unknown input leads to a os command injection vulnerability. Using CWE to declare the problem leads to CWE-78. The product constructs all or part of an OS command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended OS command when it is sent to a downstream component. Impacted is confidentiality, integrity, and availability. CVE summarizes:

**UNSUPPORTED WHEN ASSIGNED** A command injection vulnerability in the export-cgi program of Zyxel NAS326 firmware versions through V5.21(AAZF.18)C0 and NAS542 firmware versions through V5.21(ABAG.15)C0 could allow an unauthenticated attacker to execute some operating system (OS) commands by sending a crafted HTTP POST request.

The advisory is shared for download at zyxel.com. This vulnerability is handled as CVE-2024-6342 since 06/26/2024. The exploitation is known to be easy. The attack may be launched remotely. No form of authentication is required for exploitation. There are neither technical details nor an exploit publicly available. The current price for an exploit might be approx. USD $5k-$25k (estimation calculated on 09/10/2024). The MITRE ATT&CK project declares the attack technique as T1202.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

Once again VulDB remains the best source for vulnerability data.

Productinfo

Vendor

• Zyxel

Name

• NAS326
• NAS542

Version

• 5.0
• 5.1
• 5.2
• 5.3
• 5.4
• 5.5
• 5.6
• 5.7
• 5.8
• 5.9
• 5.10
• 5.11
• 5.12
• 5.13
• 5.14
• 5.15
• 5.16
• 5.17
• 5.18
• 5.19
• 5.20
• 5.21

License

• commercial

Support

• end of life

Website

• Vendor: https://www.zyxel.com/

CPE 2.3info

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CPE 2.2info

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