CVE-2021-1924 : Exploit Details and Defense Strategies
Learn about CVE-2021-1924, a critical Qualcomm vulnerability enabling information disclosure through side-channels. Find mitigation steps and long-term security practices.
This article discusses CVE-2021-1924, a vulnerability that allows information disclosure through timing and power side-channels during mod exponentiation in Qualcomm products.
Understanding CVE-2021-1924
CVE-2021-1924 is a cryptographic issue that affects a wide range of Qualcomm products, including Snapdragon Auto, Compute, Connectivity, Consumer Electronics, Consumer IOT, Industrial IOT, IoT, Voice & Music, Wearables, and Wired Infrastructure.
What is CVE-2021-1924?
The vulnerability enables attackers to obtain sensitive information through side-channel attacks during RSA-CRT mod exponentiation.
The Impact of CVE-2021-1924
With a CVSS base score of 9.0, this critical vulnerability poses a high risk to confidentiality and integrity, requiring no privileges for exploitation.
Technical Details of CVE-2021-1924
The vulnerability exists in Qualcomm products, allowing attackers to exploit timing and power side-channels during RSA-CRT mod exponentiation.
Vulnerability Description
The flaw enables attackers to disclose sensitive information during cryptographic operations, leading to potential data leaks.
Affected Systems and Versions
Multiple Qualcomm products, including APQ series, AR series, CSR series, FSM series, IPQ series, MDM series, MSM series, QCA series, and more, are impacted.
Exploitation Mechanism
Attackers can exploit the vulnerability locally without requiring user interaction, emphasizing the importance of timely patching.
Mitigation and Prevention
To protect systems from CVE-2021-1924, immediate actions and long-term security practices are crucial.
Immediate Steps to Take
Update affected Qualcomm products to the latest firmware or patches provided by the vendor to mitigate the vulnerability.
Long-Term Security Practices
Implement security best practices, such as regular software updates, monitoring for unauthorized activities, and conducting security assessments.
Patching and Updates
Stay informed about security bulletins and advisories from Qualcomm and apply relevant patches promptly to secure vulnerable systems.