CVE-2021-33545 : What You Need to Know

Multiple camera devices by UDP Technology, Geutebrück, and other vendors are vulnerable to a stack-based buffer overflow condition in the counter parameter, potentially allowing remote code execution.

Understanding CVE-2021-33545

This CVE identifies a critical vulnerability in camera devices from various vendors, allowing attackers to exploit a buffer overflow to execute arbitrary code remotely.

What is CVE-2021-33545?

The CVE-2021-33545 vulnerability involves a stack-based buffer overflow in the counter parameter of camera devices, posing a significant risk of unauthorized remote code execution.

The Impact of CVE-2021-33545

With a CVSS base score of 7.2, this high-severity vulnerability can lead to a complete compromise of affected systems, including potential data breaches and unauthorized access.

Technical Details of CVE-2021-33545

This section delves into the specific technical aspects of the CVE, including vulnerability description, affected systems, and exploitation mechanism.

Vulnerability Description

The vulnerability allows threat actors to trigger a stack-based buffer overflow by manipulating the counter parameter in camera devices, enabling the execution of malicious code.

Affected Systems and Versions

Camera devices, such as the E2 Series and Encoder G-Code from Geutebrück, are impacted by this vulnerability across various versions, including EBC-21xx, EFD-22xx, ETHC-22xx, EWPC-22xx, EEC-2xx, and EEN-20xx.

Exploitation Mechanism

Attackers can exploit this vulnerability via a low-complexity network attack vector without requiring user interaction, leading to a high impact on confidentiality, integrity, and availability.

Mitigation and Prevention

To safeguard systems from CVE-2021-33545, immediate steps, long-term security practices, and patching and updates are essential.

Immediate Steps to Take

Apply security patches provided by Geutebrück for the affected camera devices promptly.
Implement network segmentation and access controls to limit exposure to vulnerable devices.

Long-Term Security Practices

Regularly update firmware and software to mitigate known vulnerabilities and enhance system security.
Conduct vulnerability assessments and penetration testing to identify and address security gaps proactively.

Patching and Updates

Ensure timely installation of security patches and updates released by the vendor to remediate the CVE-2021-33545 vulnerability.