CVE-2018-3898 : Security Advisory and Response

A vulnerability in the QR code scanning feature of Yi Home Camera 27US 1.8.7.0D allows for potential code execution through a specially crafted QR code triggering a buffer overflow.

Understanding CVE-2018-3898

What is CVE-2018-3898?

An exploitable code execution vulnerability exists in the QR code scanning functionality of Yi Home Camera 27US 1.8.7.0D. By exploiting this vulnerability, an attacker can trigger a buffer overflow, leading to potential code execution.

The Impact of CVE-2018-3898

The vulnerability has a CVSS base score of 8.3, indicating a high severity level. The attack complexity is high, requiring no privileges, but user interaction is necessary. It can have a significant impact on confidentiality, integrity, and availability.

Technical Details of CVE-2018-3898

Vulnerability Description

The vulnerability allows an attacker to overwrite a buffer of size 0x104, which is more than enough to overflow the return address from the ssid_dst field, potentially leading to code execution.

Affected Systems and Versions

Product: Yi Technology
Version: Yi Technology Home Camera 27US 1.8.7.0D

Exploitation Mechanism

Attack Vector: Network
Attack Complexity: High
Privileges Required: None
User Interaction: Required
Scope: Changed

Mitigation and Prevention

Immediate Steps to Take

Disable QR code scanning feature if not essential
Implement network segmentation to limit access
Regularly update firmware and security patches

Long-Term Security Practices

Conduct regular security assessments and penetration testing
Educate users on safe QR code usage

Patching and Updates

Apply vendor-supplied patches promptly to address the vulnerability