CVE-2021-1977 : Vulnerability Insights and Analysis

This article delves into the details of CVE-2021-1977, a vulnerability in Qualcomm's Snapdragon products.

Understanding CVE-2021-1977

CVE-2021-1977 is a security flaw that could lead to a buffer over-read due to inadequate validation of frame length during AEAD decryption processing in various Qualcomm Snapdragon product lines.

What is CVE-2021-1977?

The vulnerability in Snapdragon products may allow attackers to exploit the buffer over-read issue, potentially compromising the security and integrity of affected systems.

The Impact of CVE-2021-1977

With a CVSS base score of 7.5, this vulnerability poses a high risk in terms of availability impact, particularly in network attack scenarios. Confidentiality and integrity impacts are assessed as none.

Technical Details of CVE-2021-1977

This section covers specific technical aspects of the CVE.

Vulnerability Description

The vulnerability arises from incorrect frame length validation during AEAD decryption in response to ASSOC processing within various Snapdragon product lines.

Affected Systems and Versions

Qualcomm's products including Snapdragon Auto, Compute, Connectivity, Voice & Music, and many others are affected. Versions range from APQ8009 to WSA8835.

Exploitation Mechanism

Attackers can potentially exploit this vulnerability over the network without requiring any special privileges, highlighting the significance of immediate mitigation measures.

Mitigation and Prevention

Learn how to address and prevent the CVE-2021-1977 vulnerability.

Immediate Steps to Take

It is crucial to apply security patches and updates provided by Qualcomm to mitigate the risk associated with this vulnerability.

Long-Term Security Practices

Implementing robust network security measures and regularly updating firmware can help enhance the overall cybersecurity posture.

Patching and Updates

Regularly monitor Qualcomm's security bulletins and promptly apply any patches or updates released to address CVE-2021-1977.