CVE-2021-1939 : Exploit Details and Defense Strategies
Understand CVE-2021-1939, a high-severity Null pointer dereference vulnerability in Qualcomm Snapdragon products. Learn about its impact, affected versions, and mitigation steps.
A Null pointer dereference vulnerability has been identified in multiple Qualcomm Snapdragon products. This article provides an overview of CVE-2021-1939, its impact, technical details, and mitigation steps.
Understanding CVE-2021-1939
This section delves into the details of the CVE-2021-1939 vulnerability affecting various Qualcomm Snapdragon products.
What is CVE-2021-1939?
CVE-2021-1939 is a Null pointer dereference vulnerability that arises due to improper validation when the preemption feature enablement is toggled in Snapdragon Auto, Compute, Connectivity, Consumer IOT, Industrial IOT, and Wearables.
The Impact of CVE-2021-1939
The CVSS v3.1 base score for CVE-2021-1939 is 8.4, categorizing it as a high-severity vulnerability. It has a low attack complexity, local attack vector, and high impacts on availability, confidentiality, and integrity, with no privileges required for exploitation.
Technical Details of CVE-2021-1939
Explore the technical aspects of the CVE-2021-1939 vulnerability in this section.
Vulnerability Description
A Null pointer dereference occurs due to insufficient validation, leading to the vulnerability in Snapdragon Auto, Compute, Connectivity, Consumer IOT, Industrial IOT, and Wearables.
Affected Systems and Versions
Qualcomm Snapdragon products affected by CVE-2021-1939 include APQ8009, APQ8009W, APQ8017, and a wide range of other versions across different product lines.
Exploitation Mechanism
The vulnerability can be exploited locally without user interaction, making it critical to address.
Mitigation and Prevention
Learn how to address CVE-2021-1939 and prevent potential exploits in this section.
Immediate Steps to Take
Immediate mitigation steps include applying patches or workarounds provided by Qualcomm.
Long-Term Security Practices
Adopting secure coding practices, regular security audits, and monitoring can help prevent similar vulnerabilities in the future.
Patching and Updates
Regularly update the affected Qualcomm products with the latest security patches to mitigate the risk of exploitation.