CVE-2021-3304 : Exploit Details and Defense Strategies

Sagemcom F@ST 3686 v2 3.495 devices are affected by a buffer overflow vulnerability when a long sessionKey is sent to the goform/login URI. This can be exploited by attackers to potentially execute arbitrary code or crash the device.

Understanding CVE-2021-3304

This section provides a detailed insight into the CVE-2021-3304 vulnerability.

What is CVE-2021-3304?

The CVE-2021-3304 vulnerability pertains to a buffer overflow issue in Sagemcom F@ST 3686 v2 3.495 devices triggered by an extended sessionKey.

The Impact of CVE-2021-3304

The vulnerability poses a risk of arbitrary code execution or denial of service (DoS) attacks, jeopardizing the security and stability of the affected devices.

Technical Details of CVE-2021-3304

Explore the technical aspects of the CVE-2021-3304 vulnerability to understand its implications better.

Vulnerability Description

The buffer overflow occurs in Sagemcom F@ST 3686 v2 3.495 devices when processing excessively long sessionKeys, enabling attackers to exploit this flaw.

Affected Systems and Versions

Sagemcom F@ST 3686 v2 3.495 devices are confirmed to be affected by this vulnerability, potentially impacting devices with this specific version.

Exploitation Mechanism

By sending a lengthy sessionKey to the goform/login URI of the affected devices, threat actors can trigger the buffer overflow and execute malicious activities.

Mitigation and Prevention

Discover the necessary actions to mitigate the risks associated with CVE-2021-3304.

Immediate Steps to Take

It is essential to apply security patches or updates provided by Sagemcom to address the CVE-2021-3304 vulnerability promptly.

Long-Term Security Practices

Implement robust network security measures, such as firewall configurations and intrusion detection systems, to enhance the overall security posture.

Patching and Updates

Regularly check for firmware updates and security advisories from Sagemcom to stay protected from known vulnerabilities.