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CVE-2021-21966 Explained : Impact and Mitigation

Learn about CVE-2021-21966, an information disclosure vulnerability in Texas Instruments CC3200 SimpleLink Solution NWP 2.9.0.0. Understand its impact, affected systems, and mitigation strategies.

This article provides insights into CVE-2021-21966, an information disclosure vulnerability found in the HTTP Server /ping.html functionality of Texas Instruments CC3200 SimpleLink Solution NWP 2.9.0.0.

Understanding CVE-2021-21966

CVE-2021-21966 is a vulnerability impacting the Texas Instruments CC3200 SimpleLink Solution NWP 2.9.0.0, allowing an attacker to execute an uninitialized read through a specially-crafted HTTP request.

What is CVE-2021-21966?

CVE-2021-21966 refers to an information disclosure vulnerability present in the HTTP Server /ping.html feature of Texas Instruments CC3200 SimpleLink Solution NWP 2.9.0.0. Attackers can exploit this flaw by sending a specifically designed HTTP request.

The Impact of CVE-2021-21966

With a CVSS base score of 5.3 (Medium), this vulnerability can lead to an uninitialized read with low confidentiality impact. The attack requires no privileges and user interaction, making it relatively accessible to malicious actors.

Technical Details of CVE-2021-21966

Here are the technical specifics of CVE-2021-21966:

Vulnerability Description

The vulnerability allows for an uninitialized read when a crafted HTTP request is sent to the HTTP Server /ping.html of the affected Texas Instruments product.

Affected Systems and Versions

The affected product includes Texas Instruments CC3200 SimpleLink Solution NWP 2.9.0.0 and Sealevel Systems, Inc. SeaConnect 370W v1.3.34.

Exploitation Mechanism

Attackers can exploit this vulnerability by sending a specially-crafted HTTP request to the targeted server, resulting in an uninitialized read.

Mitigation and Prevention

To mitigate the risks associated with CVE-2021-21966, consider the following measures:

Immediate Steps to Take

        Apply security patches released by Texas Instruments promptly.
        Monitor network traffic for any suspicious activity targeting the HTTP Server /ping.html functionality.

Long-Term Security Practices

        Regularly update software and firmware to eliminate known vulnerabilities.
        Conduct routine security assessments to identify and address potential weaknesses.

Patching and Updates

Stay informed about security advisories from Texas Instruments and apply relevant patches to secure the affected systems and prevent exploitation of CVE-2021-21966.

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