CVE-2023-28909: Integer Overflow Leading to MTU Bypass
A specific flaw exists within the Bluetooth stack of the MIB3 unit. The issue results from the lack of proper validation of user-supplied data, which can result in an integer overflow when receiving fragmented HCI packets on a channel. An attacker can leverage this vulnerability to bypass the MTU check on a channel with enabled fragmentation. Consequently, this can lead to a buffer overflow in upper layer profiles, which can be used to obtain remote code execution. The vulnerability was originally discovered in Skoda Superb III car with MIB3 infotainment unit OEM part number 3V0035820. The list of affected MIB3 OEM part numbers is provided in the referenced resources.
Affected Software
Event History
Frequently Asked Questions
What is the severity of CVE-2023-28909?
CVE-2023-28909 has a high severity rating due to the potential for remote exploitation resulting from the integer overflow in the Bluetooth stack.
How do I fix CVE-2023-28909?
To mitigate CVE-2023-28909, users should update their MIB3 Infotainment Unit firmware to the latest version released by Skoda.
What type of attacks can exploit CVE-2023-28909?
CVE-2023-28909 can be exploited by attackers sending specially crafted HCI packets, leading to potential remote code execution.
Which devices are affected by CVE-2023-28909?
CVE-2023-28909 specifically affects the Skoda MIB3 Infotainment Unit.
Is CVE-2023-28909 related to Bluetooth communication?
Yes, CVE-2023-28909 involves a vulnerability in the Bluetooth stack that relates to the handling of fragmented HCI packets.