CVE-2020-11114 : Exploit Details and Defense Strategies
Learn about CVE-2020-11114 affecting Qualcomm Snapdragon products. Discover the impact, affected systems, exploitation details, and mitigation steps for this Bluetooth buffer overflow vulnerability.
Bluetooth devices in Qualcomm Snapdragon products are vulnerable to a buffer overflow due to improper restriction of L2CAP payload length.
Understanding CVE-2020-11114
This CVE affects various Qualcomm Snapdragon products due to a buffer overflow vulnerability in Bluetooth devices.
What is CVE-2020-11114?
The vulnerability in Bluetooth devices allows attackers within radio range to trigger a buffer overflow by sending a specially crafted Link Layer packet. This issue is equivalent to CVE-2019-17060, CVE-2019-17061, and CVE-2019-17517 as documented in the Sweyntooth paper.
The Impact of CVE-2020-11114
The vulnerability can be exploited by attackers within radio range, potentially leading to a buffer overflow and unauthorized access to affected devices.
Technical Details of CVE-2020-11114
This section provides detailed technical information about the CVE.
Vulnerability Description
The vulnerability arises from Bluetooth devices failing to properly restrict the L2CAP payload length, enabling a buffer overflow via a crafted Link Layer packet.
Affected Systems and Versions
- Affected Products: Snapdragon Compute, Snapdragon Consumer IOT, Snapdragon Industrial IOT, Snapdragon IoT, Snapdragon Mobile, Snapdragon Voice & Music
- Affected Version: AR9344
Exploitation Mechanism
The vulnerability can be exploited by malicious actors within radio range sending a specifically designed Link Layer packet to trigger a buffer overflow.
Mitigation and Prevention
Protecting systems from CVE-2020-11114 requires immediate actions and long-term security measures.
Immediate Steps to Take
- Apply patches provided by Qualcomm promptly to address the vulnerability.
- Disable Bluetooth when not in use to reduce the attack surface.
Long-Term Security Practices
- Regularly update firmware and software to ensure the latest security patches are in place.
- Implement network segmentation to isolate Bluetooth devices from critical systems.
Patching and Updates
- Stay informed about security bulletins and updates from Qualcomm to apply patches as soon as they are released.