CVE-2021-1954 : Exploit Details and Defense Strategies

Possible buffer over read vulnerability due to improper validation of data pointer while parsing FILS indication IE in multiple Qualcomm Snapdragon products.

Understanding CVE-2021-1954

This CVE discloses a potential buffer over read issue in various Qualcomm Snapdragon product lines.

What is CVE-2021-1954?

The vulnerability arises from inadequate validation of data pointers during FILS indication IE parsing in multiple Qualcomm Snapdragon product categories.

The Impact of CVE-2021-1954

With a CVSS base score of 7.5, this high-severity vulnerability can lead to network-based attacks causing significant availability impact while requiring no user interaction or privileges to exploit.

Technical Details of CVE-2021-1954

This section outlines the specific details of the vulnerability.

Vulnerability Description

The vulnerability allows for a buffer over read due to improper data pointer validation during FILS indication IE parsing across various Qualcomm Snapdragon products.

Affected Systems and Versions

The vulnerability affects a wide range of Qualcomm Snapdragon products including Snapdragon Auto, Compute, Connectivity, Consumer IOT, Industrial IOT, Mobile, Wired Infrastructure, and more.

Exploitation Mechanism

The vulnerability can be exploited over the network without user interaction or specialized privileges, posing a significant threat to affected systems.

Mitigation and Prevention

Here are the steps to mitigate and prevent exploitation of CVE-2021-1954.

Immediate Steps to Take

Immediate actions include applying patches, updates, and security measures to prevent exploitation of the vulnerability.

Long-Term Security Practices

Adopting robust security practices, regular system checks, and staying updated with security advisories can help prevent similar vulnerabilities.

Patching and Updates

Ensure timely installation of patches and updates provided by Qualcomm to address the CVE-2021-1954 vulnerability.