External risk intelligence

OpenSynergy BlueSDK Use-After-Free Allows Remote Code Execution

CVE advisorySeverity: CRITICAL (CVSS 9.8)

CVE-2024-45434

The vulnerability exists in a Bluetooth stack implementation. While Bluetooth can technically be reachable over the air, it is a localized, short-range wireless protocol rather than a public-internet-facing service or web-accessible gateway. Typical deployment involves direct physical proximity, making public internet exposure uncommon.

Use After Free

Opensynergy Blue Sdk

6.0.1 and earlier

Halo Surface Signal: 2 out of 5 — less likely to be public-facing.

External exposure likelihood

Horizon Alert

Summary of the vulnerability and why it matters

A critical vulnerability has been identified in OpenSynergy's Blue SDK, a Bluetooth technology. This flaw could allow remote attackers to execute code, potentially impacting systems that utilize this software for Bluetooth communication. The primary concern is to confirm if this technology is present and exposed within our environment.

Flaw allows remote code execution via Bluetooth.
Critical flaw impacts Bluetooth software, needs context.
Confirm relevance and exposure; understand potential reach.

Attack Path

How an attacker could exploit the issue

An attacker can exploit a use-after-free vulnerability in OpenSynergy BlueSDK's Bluetooth stack to achieve remote code execution. This occurs because the software attempts to use an object after it has been freed, without proper validation. If an attacker can send specially crafted data to the Bluetooth process, they could potentially gain control of the system at the privilege level of that process.

No privileges or user interaction required.
Triggered by sending malformed data to Bluetooth stack.
Remote code execution within Bluetooth process.

Live Threat

Current exploitation, exposure, and threat context

This vulnerability in OpenSynergy BlueSDK's Bluetooth stack could allow an attacker to execute arbitrary code remotely on a system. This occurs when an object is used after it has been freed, a condition that may be triggered remotely. When supported, this could affect the confidentiality, integrity, and availability of the affected system.

System data and user data at risk.
Remote code execution may occur.
Service may be compromised.

Operational Fix

Recommended remediation, mitigation, and detection steps

Teams responsible for managing the OpenSynergy BlueSDK should prioritize identifying all instances of the affected software, assessing their exposure and business criticality, and confirming the accountable owner before planning remediation. The first practical step is to determine where the BlueSDK is deployed, if it's accessible, and who owns it, followed by a risk-based remediation plan.

Identify affected BlueSDK deployments.
Confirm reachability and criticality.
Engage accountable owner for 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 OpenSynergy BlueSDK?

BlueSDK is a software stack designed to enable Bluetooth functionality in various embedded systems and devices. It manages the complex protocols required for wireless communication, allowing hardware to connect and exchange data with other nearby Bluetooth-enabled products.

How does the CVE-2024-45434 vulnerability work?

This flaw is classified as a Use-After-Free (CWE-416). It happens when the software tries to interact with a piece of computer memory that has already been released. Because the program does not verify if the object still exists before using it, an attacker can manipulate this state to execute unauthorized commands.

Can this be triggered by just having Bluetooth enabled?

Not necessarily. An attacker must send specially crafted, malformed data specifically to the Bluetooth stack to trigger the error. Simply having the service running or being paired with a device is not enough; the attack requires active, malicious input targeting the vulnerable memory handling process.

Is my system exposed to this remote attack?

According to Halo Surface Signal, this vulnerability is considered unlikely to be reachable over the public internet. Since Bluetooth is a localized, short-range wireless protocol, an attacker generally needs to be in close physical proximity to the device to attempt an exploit, rather than attacking from a remote network location.

What are the first steps to address this CVE?

Your priority is to inventory where OpenSynergy BlueSDK is installed within your environment. Once identified, evaluate the criticality of those devices and confirm who owns or manages them. This allows you to prioritize systems that might be accessible to unauthorized individuals for a targeted update plan.

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.