CVE-2021-1899 : Exploit Details and Defense Strategies
Discover insights into CVE-2021-1899, a buffer over-read vulnerability in Qualcomm Snapdragon Consumer IOT, Industrial IOT, Mobile, and Wearables. Learn about impact, technical details, and mitigation.
A possible buffer over-read vulnerability has been identified in Qualcomm's Snapdragon Consumer IOT, Snapdragon Industrial IOT, Snapdragon Mobile, and Snapdragon Wearables. This article provides insights into the impact, technical details, and mitigation steps for CVE-2021-1899.
Understanding CVE-2021-1899
This section delves into the details of the vulnerability affecting multiple Qualcomm products.
What is CVE-2021-1899?
The vulnerability involves a possible buffer over-read due to the absence of a length check during the flashing of meta images in Qualcomm's Snapdragon devices.
The Impact of CVE-2021-1899
The CVSS v3.1 base score for this vulnerability is 4.6, with a medium severity rating. It can lead to a buffer over-read in the boot process, potentially resulting in high availability impact in affected systems.
Technical Details of CVE-2021-1899
This section provides specific technical information related to the vulnerability.
Vulnerability Description
The vulnerability arises from inadequate length verification while flashing meta images, leaving systems vulnerable to buffer over-read exploits.
Affected Systems and Versions
Qualcomm products affected by this vulnerability include Snapdragon Consumer IOT, Snapdragon Industrial IOT, Snapdragon Mobile, and Snapdragon Wearables, running various versions listed by the vendor.
Exploitation Mechanism
The lack of proper length checks allows threat actors to exploit the vulnerability by manipulating meta images during the flashing process.
Mitigation and Prevention
Understanding the steps to address and prevent the CVE-2021-1899 vulnerability.
Immediate Steps to Take
Users are advised to apply relevant patches and updates provided by Qualcomm to mitigate the risk associated with this vulnerability.
Long-Term Security Practices
Implementing secure flashing processes, maintaining up-to-date firmware, and monitoring for any suspicious activities can enhance the overall security posture.
Patching and Updates
Regularly monitor and apply security patches released by Qualcomm to protect the affected devices from potential exploitation.