CVE-2020-35609 : Exploit Details and Defense Strategies

A denial-of-service vulnerability exists in the asynchronous ioctl functionality of Microsoft Azure Sphere 20.05. A sequence of specially crafted ioctl calls can cause a denial of service. An attacker can write shellcode to trigger this vulnerability.

Understanding CVE-2020-35609

This CVE-2020-35609 vulnerability affects Microsoft Azure Sphere 20.05, allowing attackers to execute a denial-of-service attack through specially crafted ioctl calls.

What is CVE-2020-35609?

The CVE-2020-35609 vulnerability is a denial-of-service issue in the asynchronous ioctl functionality of Microsoft Azure Sphere 20.05. By exploiting this vulnerability, an attacker can trigger a denial of service by executing specific ioctl calls.

The Impact of CVE-2020-35609

This vulnerability can be exploited by attackers to disrupt the normal operation of affected systems, potentially leading to service unavailability and system instability.

Technical Details of CVE-2020-35609

The technical aspects of CVE-2020-35609 provide insight into the vulnerability's description, affected systems, versions, and exploitation mechanism.

Vulnerability Description

The vulnerability in Microsoft Azure Sphere 20.05 allows for a denial-of-service attack through a series of malicious ioctl calls, enabling an attacker to disrupt system functionality.

Affected Systems and Versions

Affected Systems: Microsoft Azure Sphere 20.05
Affected Versions: Not applicable

Exploitation Mechanism

Attackers can exploit this vulnerability by crafting specific ioctl calls to trigger a denial-of-service condition on the targeted system.

Mitigation and Prevention

Protecting systems from CVE-2020-35609 requires immediate actions and long-term security practices.

Immediate Steps to Take

Apply security patches or updates provided by Microsoft Azure Sphere to mitigate the vulnerability.
Monitor and restrict ioctl calls to prevent unauthorized access and potential exploitation.

Long-Term Security Practices

Implement network segmentation to isolate critical systems from potential attacks.
Conduct regular security assessments and penetration testing to identify and address vulnerabilities proactively.

Patching and Updates

Stay informed about security advisories and updates from Microsoft Azure Sphere to apply patches promptly and enhance system security.