A vulnerability was found in DrayTek Vigor3900 1.5.1.6. It has been rated as critical. Affected by this issue is the function filter_string. The manipulation of the argument value with an unknown input leads to a command injection vulnerability. Using CWE to declare the problem leads to CWE-77. The product constructs all or part of a command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended command when it is sent to a downstream component. Impacted is confidentiality, integrity, and availability. CVE summarizes:

DrayTek Vigor3900 v1.5.1.6 was discovered to contain an authenticated command injection vulnerability via the value parameter in the filter_string function.

The advisory is shared for download at github.com. This vulnerability is handled as CVE-2024-44845 since 08/21/2024. The exploitation is known to be easy. The attack may be launched remotely. There are known technical details, but no exploit is available. The current price for an exploit might be approx. USD $0-$5k (estimation calculated on 09/12/2024). 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.

Entries connected to this vulnerability are available at VDB-222231, VDB-222233, VDB-223643 and VDB-226274.

Productinfo

Type

• Router Operating System

Vendor

• DrayTek

Name

• Vigor3900

Version

• 1.5.1.6

License

• commercial

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CPE 2.2info

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