CVE-2017-2856 Explained : Impact and Mitigation

A vulnerability in the DDNS client of the Foscam C1 Indoor HD Camera can lead to a buffer overflow, allowing attackers to take control of the device.

Understanding CVE-2017-2856

This CVE involves a critical security issue in the Foscam C1 Indoor IP Camera's DDNS client, potentially enabling complete device compromise.

What is CVE-2017-2856?

The vulnerability in the DDNS client of the Foscam C1 Indoor HD Camera can result in a buffer overflow.
Attackers can exploit this flaw to intercept HTTP connections and gain full control over the device.

The Impact of CVE-2017-2856

CVSS Base Score: 8.1 (High)
Attack Vector: Network
Attack Complexity: High
Confidentiality, Integrity, and Availability Impact: High
Privileges Required: None
Scope: Unchanged
This vulnerability poses a severe risk to the security and functionality of the affected devices.

Technical Details of CVE-2017-2856

This section provides detailed technical insights into the vulnerability.

Vulnerability Description

An exploitable buffer overflow vulnerability exists in the DDNS client of the Foscam C1 Indoor HD Camera.
Devices running application firmware version 2.52.2.43 are susceptible to this issue.

Affected Systems and Versions

Affected Product: Foscam Indoor IP Camera C1 Series
Vendor: Foscam
Affected Version: System Firmware Version: 1.9.3.18, Application Firmware Version: 2.52.2.43, Plug-In Version: 3.3.0.26

Exploitation Mechanism

Attackers can exploit the buffer overflow by intercepting HTTP connections when the DDNS feature is enabled on the device.
By setting up a malicious HTTP server, attackers can completely compromise the Foscam C1 Indoor HD Camera.

Mitigation and Prevention

Protecting against CVE-2017-2856 requires immediate actions and long-term security practices.

Immediate Steps to Take

Disable the DDNS feature on the Foscam C1 Indoor HD Camera if not essential.
Regularly monitor for firmware updates and security advisories from Foscam.
Implement network segmentation to limit the impact of potential attacks.

Long-Term Security Practices

Conduct regular security assessments and penetration testing on the camera and network infrastructure.
Educate users on secure configuration practices and the risks associated with enabling certain features.

Patching and Updates

Apply firmware updates provided by Foscam to address the vulnerability and enhance the security of the device.