CVE-2021-35111 Explained : Impact and Mitigation
Learn about CVE-2021-35111, an issue in Qualcomm products leading to Time-of-check Time-of-use (TOCTOU) race condition. Understand the impact, affected versions, and mitigation steps.
This CVE-2021-35111 impacts various Qualcomm products, potentially leading to a Time-of-check Time-of-use (TOCTOU) race condition. Here's what you need to know about this vulnerability, its impact, technical details, and mitigation steps.
Understanding CVE-2021-35111
This section delves into the essential details of CVE-2021-35111.
What is CVE-2021-35111?
The vulnerability arises from improper validation of tag ID, which can trigger a TOCTOU race condition in Snapdragon Connectivity and Snapdragon Mobile.
The Impact of CVE-2021-35111
CVE-2021-35111 has a CVSS base score of 7.5, indicating a high impact due to the TOCTOU race condition. It can cause high availability impact but does not affect confidentiality or integrity.
Technical Details of CVE-2021-35111
This section covers the technical aspects of CVE-2021-35111.
Vulnerability Description
The vulnerability results from inadequate tag ID validation, leading to a race condition in Snapdragon Connectivity and Snapdragon Mobile.
Affected Systems and Versions
Several Qualcomm products are affected, including AR8035, QCA6390, SDX65, and more.
Exploitation Mechanism
The vulnerability could be exploited by malicious actors leveraging the TOCTOU race condition in modem operations.
Mitigation and Prevention
This section provides guidance on how to mitigate and prevent CVE-2021-35111.
Immediate Steps to Take
Apply security patches from Qualcomm as soon as they are available to mitigate the risk of exploitation.
Long-Term Security Practices
Employ secure coding practices and regularly update systems to prevent similar vulnerabilities in the future.
Patching and Updates
Regularly check for security updates from Qualcomm and apply them promptly to ensure system security.