Overview
In this blog post, we delve into a critical vulnerability identified as CVE-2024-45434 which has been detected in OpenSynergy BlueSDK, a software stack that provides Bluetooth functionality for embedded systems. This vulnerability, if exploited, has the potential to compromise system security and leak sensitive data. Given the pervasive use of Bluetooth in today’s interconnected world, this vulnerability represents a significant security concern that demands immediate action from those using affected versions of OpenSynergy BlueSDK.
Vulnerability Summary
CVE ID: CVE-2024-45434
Severity: Critical (CVSS 9.8)
Attack Vector: Network
Privileges Required: None
User Interaction: None
Impact: Remote Code Execution, Potential System Compromise, and Data Leakage
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Product | Affected Versions
OpenSynergy BlueSDK | Up to and including 6.x
How the Exploit Works
This exploit takes advantage of a use-after-free flaw within the BlueSDK Bluetooth stack. This flaw occurs when the system fails to validate the existence of an object prior to performing operations on it. A potential attacker can leverage this flaw to trigger a use-after-free condition, allowing them to execute malicious code remotely in the context of the user account under which the Bluetooth process runs.
Conceptual Example Code
This is a conceptual example of how the vulnerability might be exploited via a malicious Bluetooth packet. Please note that this is a simplified representation and actual exploitation would require more complex manipulation.
class MaliciousPacket:
def __init__(self):
self.data = '...'
self.next = None
def exploit(target):
packet = MaliciousPacket()
# Send the malicious packet to the target
target.send(packet)
# The packet is freed here, but the reference is still stored
packet.free()
# This results in a use-after-free, potentially allowing code execution
target.process_packet(packet)In this simplified example, a malicious Bluetooth packet is created and sent to the target device. The packet is then freed, but the reference to the packet is still stored. As a result, when the target device processes the packet again, it results in a use-after-free condition.
Mitigation Guidance
Users of OpenSynergy BlueSDK are advised to apply the vendor patch immediately to mitigate the vulnerability. If applying the patch is not immediately possible, using a Web Application Firewall (WAF) or Intrusion Detection System (IDS) can serve as a temporary mitigation measure. These systems can potentially detect and block attempts to exploit this vulnerability. However, these are just temporary fixes and the ultimate solution is to apply the vendor patch.
