CVE-2021-1920 : What You Need to Know
Learn about CVE-2021-1920, an integer underflow vulnerability in Qualcomm Snapdragon products, with a high severity level and critical impact. Find out how to mitigate and prevent the vulnerability.
This article provides details about CVE-2021-1920, a critical vulnerability in Qualcomm products.
Understanding CVE-2021-1920
CVE-2021-1920 is an integer underflow vulnerability that can occur due to improper handling of incoming RTCP packets in various Qualcomm products.
What is CVE-2021-1920?
The CVE-2021-1920 vulnerability involves an integer underflow issue in Snapdragon Auto, Compute, Connectivity, Consumer IOT, Industrial IOT, IoT, Voice & Music, and Wearables products.
The Impact of CVE-2021-1920
The vulnerability has a CVSS base score of 9.8, indicating a critical severity level. It can result in high confidentiality, integrity, and availability impact without requiring any special privileges.
Technical Details of CVE-2021-1920
This section covers the technical aspects of the CVE-2021-1920 vulnerability.
Vulnerability Description
The vulnerability arises from an integer underflow caused by the mishandling of RTCP packets in the affected Qualcomm products.
Affected Systems and Versions
The products affected include a wide range of Qualcomm Snapdragon Auto, Compute, Connectivity, Consumer IOT, Industrial IOT, IoT, Voice & Music, and Wearables with specific versions. Refer to the vendor's security bulletin for a detailed list.
Exploitation Mechanism
The vulnerability can be exploited through the manipulation of RTCP packets, leading to an integer underflow and potentially allowing attackers to execute arbitrary code or disrupt the device's operation.
Mitigation and Prevention
In this section, we discuss steps to mitigate and prevent CVE-2021-1920.
Immediate Steps to Take
Users are advised to apply patches provided by Qualcomm to address the vulnerability. Additionally, network segmentation and monitoring can help detect potential exploitation attempts.
Long-Term Security Practices
To enhance long-term security, users should regularly update their devices with the latest security patches and follow best practices for network security and access control.
Patching and Updates
Keep your Qualcomm products up to date with firmware and software updates released by the vendor. Stay informed about security bulletins and apply patches promptly to mitigate the risk of exploitation.