CVE-2021-1896 Explained : Impact and Mitigation

This article provides an in-depth analysis of CVE-2021-1896, a vulnerability in Qualcomm's Snapdragon Compute and Snapdragon Connectivity affecting multiple versions.

Understanding CVE-2021-1896

CVE-2021-1896 involves weak configuration in WLAN that could lead to the forwarding of unencrypted packets between clients in Snapdragon Compute and Snapdragon Connectivity.

What is CVE-2021-1896?

The vulnerability arises from inadequate WLAN configuration, allowing the unauthorized transfer of unencrypted data packets from one client to another within the affected Qualcomm products.

The Impact of CVE-2021-1896

With a CVSS base score of 4.3 (Medium severity), this vulnerability could result in the potential exposure of sensitive information due to unencrypted packet forwarding between clients.

Technical Details of CVE-2021-1896

This section delves into the specific technical aspects of CVE-2021-1896.

Vulnerability Description

The weak WLAN configuration issue permits the unintended forwarding of unencrypted data packets among clients, compromising data integrity and confidentiality.

Affected Systems and Versions

Qualcomm's Snapdragon Compute and Snapdragon Connectivity products are impacted, including versions AQT1000, QCA6164, QCA6174, QCA6174A, QCA6420, QCA6430, QCA9377, SC8180X+SDX55, SD 8C, SD 8CX, SD7c, SD850, SM6250, WCD9340, WCD9341, WCN3990, WCN3991, WCN3998, WCN6850, WSA8810, and WSA8815.

Exploitation Mechanism

The vulnerability allows malicious actors within the WLAN network to intercept and forward unencrypted data packets between clients undetected, potentially leading to data breaches and privacy violations.

Mitigation and Prevention

To address CVE-2021-1896, immediate actions and long-term security practices are recommended.

Immediate Steps to Take

Users are advised to update their Qualcomm products to the latest firmware or software patches provided by the vendor. Additionally, enforcing secure WLAN configurations and segmenting networks can reduce the risk of unauthorized packet forwarding.

Long-Term Security Practices

Regular security audits, network monitoring, and employee awareness programs can enhance the overall security posture of organizations using affected Qualcomm products. Implementing encryption protocols and access controls can also fortify network defenses against similar vulnerabilities in the future.

Patching and Updates

Stay informed about security bulletins and updates from Qualcomm to promptly address any emerging vulnerabilities and apply patches to safeguard your systems against exploits.