CVE-2024-45433 Overview
CVE-2024-45433 is an incorrect control flow scoping vulnerability [CWE-705] in the OpenSynergy BlueSDK Bluetooth stack through version 6.x. The flaw exists because the stack fails to properly return control after detecting an unusual condition. An attacker can leverage this behavior to bypass a security validation, allowing incoming Bluetooth data to be processed when it should have been rejected. The vulnerability is part of the PerfektBlue research disclosed by PCA Cyber Security, which affects automotive and embedded systems using the BlueSDK stack. Because BlueSDK is widely embedded in in-vehicle infotainment (IVI) and telematics platforms, exposure extends across multiple downstream OEMs.
Critical Impact
An unauthenticated attacker within Bluetooth range or reachable network path can bypass validation logic in the BlueSDK stack, enabling processing of unauthorized data with limited confidentiality and integrity impact.
Affected Products
- OpenSynergy BlueSDK (Blue SDK) versions through 6.x
- Automotive IVI and telematics units embedding BlueSDK
- Embedded devices using OpenSynergy Bluetooth stack components
Discovery Timeline
- 2025-09-12 - CVE-2024-45433 published to the National Vulnerability Database (NVD)
- 2026-06-17 - Last updated in NVD database
Technical Details for CVE-2024-45433
Vulnerability Analysis
The vulnerability resides in the BlueSDK Bluetooth stack implementation. Specific code paths within the stack detect an unusual or invalid condition but do not correctly halt execution or return from the function. Instead, control flow continues past the validation check. This behavior allows incoming Bluetooth protocol data to be processed even after a check should have rejected it.
Because the affected component is a Bluetooth stack embedded in vehicles and IoT hardware, exploitation vectors include L2CAP, RFCOMM, and higher-layer profile handlers. The vulnerability is classified as Incorrect Control Flow Scoping [CWE-705], meaning conditional logic does not enforce the intended termination of execution when an error condition is detected. An attacker who successfully bypasses the validation can influence downstream parsing routines, contributing to broader exploit chains disclosed under the PerfektBlue advisory.
Root Cause
The root cause is missing or misplaced return statements following the detection of an unexpected condition. Rather than aborting processing on the error path, the function proceeds to handle attacker-supplied data. This is a design-level defect in the control flow structure of the affected BlueSDK routines.
Attack Vector
Exploitation requires network reachability to the vulnerable Bluetooth interface. The attack requires no authentication and no user interaction. An adjacent attacker within Bluetooth range can send crafted protocol data units to trigger the validation bypass. When chained with other PerfektBlue vulnerabilities, the flaw contributes to remote code execution scenarios on IVI systems.
No verified public exploit code is available for this specific CVE. See the PCA Cybersecurity Advisory for coordinated disclosure details.
Detection Methods for CVE-2024-45433
Indicators of Compromise
- Unexpected Bluetooth pairing or connection attempts to IVI or embedded telematics devices from unknown MAC addresses
- Anomalous L2CAP or RFCOMM traffic patterns targeting BlueSDK-based devices
- Crash logs, watchdog resets, or unexpected reboots on BlueSDK-powered infotainment units
Detection Strategies
- Monitor Bluetooth radio logs on affected devices for repeated malformed protocol frames or connection attempts from untrusted peers
- Correlate telematics diagnostic data with vehicle location to identify proximity-based probing patterns
- Inspect vendor firmware version reports through fleet management systems to identify devices running BlueSDK 6.x or earlier
Monitoring Recommendations
- Ingest device telemetry and firmware inventory data into a centralized logging platform to track exposure across the fleet
- Alert on unexpected outbound network traffic from IVI systems following Bluetooth session establishment
- Track vendor advisories from OpenSynergy and downstream OEMs for supplemental firmware releases
How to Mitigate CVE-2024-45433
Immediate Actions Required
- Contact the device OEM or Tier 1 supplier for firmware updates addressing the PerfektBlue vulnerability set
- Inventory all vehicles and embedded devices that ship with OpenSynergy BlueSDK components
- Restrict Bluetooth pairing on affected devices until patched firmware is deployed
Patch Information
OpenSynergy has provided patches to licensees of BlueSDK. Downstream integrators, including automotive OEMs and embedded device vendors, must incorporate the fixes into their firmware and distribute them through their update mechanisms. Consult the PCA Cybersecurity PerfektBlue Advisory and the OpenSynergy homepage for coordination details.
Workarounds
- Disable Bluetooth on affected devices where the capability is not operationally required
- Set Bluetooth interfaces to non-discoverable mode to reduce exposure to opportunistic scanning
- Limit pairing to a controlled allow-list of trusted devices where the platform supports such restriction
- Physically shield or isolate vulnerable units during service intervals until firmware updates are applied
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
