CVE-2018-19524 : Exploit Details and Defense Strategies

A vulnerability was found in Shenzhen Skyworth DT741 Converged Intelligent Terminal, allowing unauthorized individuals to execute remote code or cause a denial of service.

Understanding CVE-2018-19524

This CVE identifies a security flaw in certain Skyworth devices that can be exploited for unauthorized access and service disruption.

What is CVE-2018-19524?

The vulnerability in the Web_passwd function of specific Skyworth devices enables attackers to trigger a denial of service or execute remote code without authentication.

The Impact of CVE-2018-19524

Unauthorized individuals can exploit the vulnerability to cause a denial of service (segmentation fault) or gain unauthenticated remote code execution.
Attackers can manipulate registers S0 through S4 and T4 through T7, leading to potential system compromise.

Technical Details of CVE-2018-19524

This section provides detailed technical insights into the vulnerability.

Vulnerability Description

The flaw allows attackers to use a lengthy password in the Web_passwd function to achieve unauthorized remote code execution or cause a denial of service by controlling specific registers.

Affected Systems and Versions

Shenzhen Skyworth DT741 Converged Intelligent Terminal (G/EPON+IPTV) SDOTBGN1
DT721-cb SDOTBGN1
DT741-cb SDOTBGN1

Exploitation Mechanism

Attackers exploit the vulnerability by utilizing a lengthy password in the Web_passwd function, enabling them to control registers S0 through S4 and T4 through T7.

Mitigation and Prevention

Protecting systems from this vulnerability requires immediate actions and long-term security practices.

Immediate Steps to Take

Apply security patches provided by the vendor promptly.
Implement strong password policies and access controls.
Monitor network traffic for any suspicious activities.

Long-Term Security Practices

Conduct regular security assessments and penetration testing.
Keep systems and software updated with the latest security patches.
Educate users on cybersecurity best practices to prevent social engineering attacks.

Patching and Updates

Regularly check for updates and patches from the vendor to address security vulnerabilities.
Ensure timely deployment of patches to mitigate the risk of exploitation.