An unused function in MicroServer can start a reverse SSH connection to a vendor registered domain, without mutual authentication. An attacker on the local network with admin access to the web server, and the ability to manipulate DNS responses, can redirect the SSH connection to an attacker controlled device.
Weakness
The product establishes a communication channel to (or from) an endpoint for privileged or protected operations, but it does not properly ensure that it is communicating with the correct endpoint.
Affected Software
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Weather_microserver_firmware | Columbiaweather | * | MS_4.1_14142 (excluding) |
Extended Description
Attackers might be able to spoof the intended endpoint from a different system or process, thus gaining the same level of access as the intended endpoint. While this issue frequently involves authentication between network-based clients and servers, other types of communication channels and endpoints can have this weakness.
Related Attack Patterns
- https://cwe.mitre.org/data/definitions/161.html
- https://cwe.mitre.org/data/definitions/481.html
- https://cwe.mitre.org/data/definitions/501.html
- https://cwe.mitre.org/data/definitions/697.html