CVE-2021-1975 : What You Need to Know
Learn about CVE-2021-1975, a critical heap overflow vulnerability in Qualcomm products impacting various versions. Understand the impact, affected systems, and mitigation steps.
This article provides detailed information about CVE-2021-1975, a vulnerability in Qualcomm products affecting various versions.
Understanding CVE-2021-1975
CVE-2021-1975 is identified as a possible heap overflow vulnerability due to an improper length check of the domain when parsing DNS responses in multiple Qualcomm products.
What is CVE-2021-1975?
The vulnerability stems from inadequate domain length validation while processing DNS responses across a range of Qualcomm products, potentially leading to a heap overflow condition.
The Impact of CVE-2021-1975
With a CVSS base score of 9.8 (Critical), the vulnerability poses a significant risk. It has a low attack complexity, high confidentiality, integrity, and availability impact, and requires no user interaction for exploitation.
Technical Details of CVE-2021-1975
CVE-2021-1975 falls under the category of 'Improper Restrictions of Operations within the Bounds of a Memory Buffer in Data Modem.'
Vulnerability Description
The flaw allows attackers to trigger a heap overflow by exploiting the insufficient length check of the domain in DNS response processing in multiple Qualcomm products.
Affected Systems and Versions
Various Qualcomm products like Snapdragon Auto, Compute, Connectivity, IoT, Voice & Music, and Wearables are impacted across a wide range of versions.
Exploitation Mechanism
Exploiting this vulnerability requires no special privileges and can be achieved remotely via network access.
Mitigation and Prevention
To address CVE-2021-1975, immediate action and long-term security measures are crucial.
Immediate Steps to Take
Users should apply security patches or updates provided by Qualcomm promptly to fix the vulnerability.
Long-Term Security Practices
Implement strict input validation processes, conduct regular security audits, and stay informed about security bulletins for ongoing protection.
Patching and Updates
Regularly check for security advisories from Qualcomm and apply patches to ensure the safety of the affected products.