External risk intelligence

Bird D1101V-F Key Derivation and Password Validation Vulnerability

CVE advisorySeverity: CRITICAL (CVSS 9.8)

CVE-2023-42179

The affected product is an internet-connected video door station/intercom system. These devices are designed to be public-facing by default to enable remote visitor communication, mobile app integration, and door control from external networks.

Halo Surface Signal: 5 out of 5 — more likely to be public-facing.

External exposure likelihood

Horizon Alert

Summary of the vulnerability and why it matters

This advisory details a critical vulnerability in Bird Home Automation's D1101V-F door station, stemming from flaws in its key derivation and password validation processes. The vulnerability could allow unauthorized access and control over the device, impacting the security of entry points it manages. The main concern is confirming relevance and exposure given the nature of the affected technology.

Flaws allow unauthorized access to door stations.
Potential to compromise building entry points.
Confirm relevance and exposure of affected devices.

Attack Path

How an attacker could exploit the issue

An attacker could exploit this vulnerability by targeting the device over the network. They could potentially gain unauthorized access to sensitive information and control over the device through flaws in how it handles key derivation and password validation. This could lead to a complete compromise of the device's functionality and data.

No authentication required for access.
Exploits key derivation and password validation.
Risk of unauthorized access and control.

Live Threat

Current exploitation, exposure, and threat context

When supported by the advisory, this vulnerability could impact the confidentiality, integrity, and availability of the Bird Home Automation D1101V-F 000140. Specifically, flaws in key derivation and password validation processes may allow unauthorized parties to access sensitive information or alter system behavior.

System access and data integrity.
Attacks via network access.
Unauthorized access and control.

Operational Fix

Recommended remediation, mitigation, and detection steps

This vulnerability in Bird Home Automation D1101V-F affects devices accessible via the network, meaning ownership likely falls to teams managing network-attached devices and the applications they host. The first practical step is to identify all instances of the affected device, determine their network exposure and business criticality, and then pinpoint the specific system or application owner accountable for remediation.

Identify affected device owners.
Verify network exposure and criticality.
Plan vendor-coordinated remediation.

Supplementary metadata

CVSS vector

Validate whether this threat affects your internet-facing exposure.

Halo Threat Intelligence helps prioritize remediation with Halo Surface Signal and H/A/L/O context. Start exposure validation with a free external attack surface trial.

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Frequently asked questions

What is the Bird D1101V-F?

The Bird D1101V-F is a video door station designed by Bird Home Automation. It acts as an internet-connected intercom system that allows users to communicate with visitors, monitor entry points via video, and remotely manage door access through mobile applications.

What does this CVE-2023-42179 vulnerability mean?

This vulnerability is classified as Improper Access Control (CWE-284). It means the device fails to properly restrict or verify who can access its functions. Specifically, flaws in the system's key derivation and password validation processes allow unauthorized parties to bypass security checks and interact with the door station.

How does an attacker trigger this vulnerability?

An attacker triggers this by sending malicious network requests to the device to exploit its flawed password and key handling logic. Because the vulnerability lies in the core authentication process, it does not require any prior user credentials to succeed. It is not triggered by physical interactions with the door station buttons or legitimate user-initiated app commands.

Is my device at risk based on Halo Surface Signal?

Yes, if you use this device, your risk is significant. Halo Surface Signal notes that the D1101V-F is inherently designed to be internet-connected to function, making it public-facing by default. This connectivity is necessary for remote mobile app features, but it unfortunately places these devices within reach of anyone on the internet who can communicate with them over the network.

What steps should I take if I use this door station?

First, compile a list of all D1101V-F units in your environment to understand your footprint. Once identified, evaluate the network accessibility of these devices and coordinate with the team responsible for building security or IT infrastructure. Use this information to plan for vendor-provided updates or guidance, prioritizing units that are directly exposed to the public internet.

References

Written by Nicholas Merritt

Nicholas Merritt is VP of Security Solutions at Halo Security. With more than 25 years across application security, vulnerability prioritization, and offensive security, he helps teams translate threat data into practical exposure validation and remediation focus. He authors Halo Threat Intelligence CVE advisories using Halo Surface Signal and H/A/L/O context to prioritize internet-facing risk.