CVE-2021-30311 Explained : Impact and Mitigation
Discover the impact of CVE-2021-30311, a high-severity vulnerability affecting Qualcomm Snapdragon products. Learn about the vulnerability, affected systems, mitigation steps, and more.
A possible heap overflow vulnerability was identified in multiple Qualcomm Snapdragon products, potentially leading to high impact scenarios.
Understanding CVE-2021-30311
This CVE involves a lack of index validation before allocation and writing to a heap buffer in various Qualcomm Snapdragon products.
What is CVE-2021-30311?
The vulnerability exists due to improper input validation in the modem components of Snapdragon Auto, Snapdragon Compute, Snapdragon Connectivity, Snapdragon Industrial IOT, and Snapdragon Mobile.
The Impact of CVE-2021-30311
With a CVSS base score of 7.8, the vulnerability poses a high risk, potentially allowing attackers to execute arbitrary code or cause a denial of service by overflowing the heap.
Technical Details of CVE-2021-30311
The vulnerability arises from inadequate index validation, triggering heap overflows across a wide range of Qualcomm Snapdragon products.
Vulnerability Description
The flaw stems from not performing proper index validation before handling heap memory, which could lead to memory corruption and exploitation.
Affected Systems and Versions
Products affected include Snapdragon Auto, Snapdragon Compute, Snapdragon Connectivity, Snapdragon Industrial IOT, and Snapdragon Mobile, with numerous specific versions listed.
Exploitation Mechanism
By exploiting this vulnerability, an attacker could potentially craft a malicious request, triggering a heap overflow which might allow for the execution of arbitrary code.
Mitigation and Prevention
It is crucial to take immediate steps to address the CVE and implement long-term security practices to mitigate similar risks.
Immediate Steps to Take
Organizations and users must apply patches and security updates provided by Qualcomm to address the vulnerability promptly.
Long-Term Security Practices
Implement secure coding practices, perform regular security audits, and stay updated with vendor security bulletins to prevent similar vulnerabilities.
Patching and Updates
Regularly check for and apply patches released by Qualcomm for the affected Snapdragon products to ensure system security.