CVE-2020-11141 Explained : Impact and Mitigation
Learn about CVE-2020-11141, a Bluetooth SOC vulnerability in Qualcomm Snapdragon products. Find out the impacted systems, exploitation risks, and mitigation steps.
A buffer over-read issue in Bluetooth estack affecting various Qualcomm Snapdragon products.
Understanding CVE-2020-11141
What is CVE-2020-11141?
The vulnerability is caused by a lack of validation for the length of L2cap configuration requests in Bluetooth SOC.
The Impact of CVE-2020-11141
This vulnerability could allow a remote attacker to execute arbitrary code or cause a denial of service by sending specially crafted Bluetooth packets.
Technical Details of CVE-2020-11141
Vulnerability Description
The issue arises due to improper input validation in Bluetooth SOC, leading to a buffer over-read in the affected Qualcomm Snapdragon products.
Affected Systems and Versions
- Products: Snapdragon Auto, Compute, Connectivity, Consumer Electronics Connectivity, Consumer IOT, Industrial IOT, Mobile, Voice & Music, Wired Infrastructure and Networking
- Versions: APQ8009, APQ8053, QCA6390, QCN7605, SA415M, SA515M, SC8180X, SDX55, SM8250
Exploitation Mechanism
The vulnerability is exploited by sending a maliciously crafted Bluetooth packet to the target device, triggering the buffer over-read.
Mitigation and Prevention
Immediate Steps to Take
- Apply patches provided by Qualcomm to address the vulnerability.
- Disable Bluetooth if not required to reduce the attack surface.
Long-Term Security Practices
- Regularly update firmware and software to protect against known vulnerabilities.
- Implement network segmentation to isolate critical devices from potentially compromised ones.
Patching and Updates
- Qualcomm has released patches to fix the issue. Ensure all affected devices are updated with the latest firmware.