Zyxel GS1900-48 up to V2.80(AAHN.1)C0 HTTP Request os command injection

Summaryinfo

A vulnerability classified as critical was found in Zyxel GS1900-48 up to V2.80(AAHN.1)C0. Impacted is an unknown function of the component HTTP Request Handler. Executing a manipulation can lead to os command injection. This vulnerability appears as CVE-2024-8881. The attacker needs to be present on the local network. There is no available exploit.

Detailsinfo

A vulnerability was found in Zyxel GS1900-48 up to V2.80(AAHN.1)C0. It has been declared as critical. This vulnerability affects an unknown function of the component HTTP Request Handler. The manipulation with an unknown input leads to a os command injection vulnerability. The CWE definition for the vulnerability is 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. As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes:

A post-authentication command injection vulnerability in the CGI program in the Zyxel GS1900-48 switch firmware version V2.80(AAHN.1)C0 and earlier could allow an authenticated, LAN-based attacker with administrator privileges to execute some operating system (OS) commands on an affected device by sending a crafted HTTP request.

The advisory is shared for download at zyxel.com. This vulnerability was named CVE-2024-8881 since 09/16/2024. The exploitation appears to be easy. The attack needs to approached within the local network. Additional levels of successful authentication are necessary for exploitation. There are neither technical details nor an exploit publicly available. The current price for an exploit might be approx. USD $0-$5k (estimation calculated on 11/12/2024). 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.

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Productinfo

Vendor

• Zyxel

Name

• GS1900-48

Version

• V2.80(AAHN.1)C0

License

• commercial

Website

• Vendor: https://www.zyxel.com/

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