CVE-2021-1928 : Security Advisory and Response
Learn about CVE-2021-1928, a buffer over-read vulnerability in Qualcomm products impacting availability. Discover the affected systems, exploitation, and mitigation steps.
This CVE-2021-1928 article provides detailed information about a buffer over-read vulnerability that could occur due to incorrect buffer size checks while flashing eMMC devices in various Qualcomm products.
Understanding CVE-2021-1928
In this section, we will delve into what CVE-2021-1928 entails.
What is CVE-2021-1928?
CVE-2021-1928 involves a buffer over-read vulnerability resulting from inadequate buffer size verification during eMMC device flashing on multiple Qualcomm products.
The Impact of CVE-2021-1928
The vulnerability's CVSS base score is 4.6, categorizing it as medium severity with a high impact on availability. It requires physical access and no user interaction, affecting confidentiality and integrity to a limited extent.
Technical Details of CVE-2021-1928
This section will cover the technical aspects of CVE-2021-1928.
Vulnerability Description
The vulnerability may lead to buffer over-read due to insufficient buffer size validation during eMMC device flashing across a range of Qualcomm products.
Affected Systems and Versions
Qualcomm products such as Snapdragon Connectivity, Snapdragon Consumer IOT, Snapdragon Industrial IOT, Snapdragon Mobile, Snapdragon Voice & Music, Snapdragon Wearables, Snapdragon Wired Infrastructure and Networking are impacted.
Exploitation Mechanism
The vulnerability's low attack complexity and physical vector make it easier for threat actors with high availability consequences.
Mitigation and Prevention
In this section, we will discuss how to mitigate and prevent CVE-2021-1928.
Immediate Steps to Take
It is recommended to apply patches provided by Qualcomm promptly and follow best security practices to minimize risks.
Long-Term Security Practices
Implement strict device flashing procedures, maintain up-to-date firmware, and conduct regular security assessments to prevent future vulnerabilities.
Patching and Updates
Regularly monitor Qualcomm's security bulletins and apply relevant updates to ensure system security.