CVE-2021-22675 : What You Need to Know

Integer overflow vulnerability in SimpleLink Wi-Fi, MSP432, CC13XX, CC26XX, CC32XX, CC3100 allows remote code execution via malformed firmware update files.

Understanding CVE-2021-22675

This CVE describes a critical vulnerability in various SimpleLink Wi-Fi products that could be exploited by an attacker to remotely execute malicious code.

What is CVE-2021-22675?

The vulnerability in the affected products leads to an integer overflow issue while parsing malformed over-the-air firmware update files. This flaw could enable an attacker to execute code remotely on the impacted devices.

The Impact of CVE-2021-22675

If successfully exploited, this vulnerability could result in an attacker remotely executing arbitrary code, leading to potential compromise of the affected devices and sensitive information.

Technical Details of CVE-2021-22675

This section delves into the specifics of the vulnerability, including affected systems, versions, and the exploitation mechanism.

Vulnerability Description

The vulnerability resides in the way the affected products handle malformed over-the-air firmware update files, leading to an integer overflow condition, which may allow an attacker to trigger remote code execution.

Affected Systems and Versions

The vulnerability impacts SimpleLink Wi-Fi, MSP432, CC13XX, CC26XX, CC32XX, CC3100 devices with specific SDK versions: MSP432E4 SDK v4.20.00.12 and earlier, CC32XX SDK v4.30.00.06 and earlier, CC13X0 SDK versions prior to v4.10.03, CC13X2 and CC26XX SDK versions prior to v4.40.00, CC3200 SDK v1.5.0 and earlier, CC3100 SDK v1.3.0 and earlier.

Exploitation Mechanism

By manipulating malformed firmware update files, an attacker can trigger an integer overflow condition in the parsing mechanism, ultimately leading to the execution of malicious code on the affected devices.

Mitigation and Prevention

To safeguard systems from potential exploitation of CVE-2021-22675, prompt actions need to be taken, including immediate steps and long-term security practices.

Immediate Steps to Take

It is recommended to apply security patches provided by the vendor as soon as possible to mitigate the risk of remote code execution. Additionally, network segmentation and access controls should be implemented to limit unauthorized access.

Long-Term Security Practices

In the long term, organizations should prioritize regular software updates and security patches to address known vulnerabilities promptly. Security awareness training for personnel can also help in preventing successful exploitation of such vulnerabilities.

Patching and Updates

Vendors have released patches addressing the vulnerability. It is crucial for users to apply these patches without delay to secure their systems from potential exploitation.