CVE-2020-21992 : Vulnerability Insights and Analysis

Inim Electronics SmartLiving SmartLAN/G/SI <=6.x is vulnerable to an authenticated remote command injection flaw, allowing attackers to execute system commands with root privileges remotely.

Understanding CVE-2020-21992

This CVE involves a security issue in Inim Electronics SmartLiving SmartLAN/G/SI <=6.x that enables authenticated remote command injection.

What is CVE-2020-21992?

The vulnerability arises from the lack of sanitization of the 'par' POST parameter when interacting with the 'testemail' module through the web.cgi binary. This flaw allows attackers to inject OS commands with root privileges by exploiting the vulnerable string format parameter in the mailx service.

The Impact of CVE-2020-21992

Exploiting this vulnerability enables attackers to execute system commands as the root user remotely, utilizing default credentials and bypassing access controls.

Technical Details of CVE-2020-21992

This section provides more technical insights into the CVE.

Vulnerability Description

The vulnerability in Inim Electronics SmartLiving SmartLAN/G/SI <=6.x allows for authenticated remote command injection due to improper sanitization of input parameters.

Affected Systems and Versions

Product: Inim Electronics SmartLiving SmartLAN/G/SI
Versions: <=6.x

Exploitation Mechanism

The issue occurs when the 'par' POST parameter is not properly sanitized when interacting with the 'testemail' module through the web.cgi binary, leading to command injection with root privileges.

Mitigation and Prevention

Protecting systems from CVE-2020-21992 requires immediate actions and long-term security measures.

Immediate Steps to Take

Apply vendor-supplied patches or updates promptly.
Implement strong, unique passwords to mitigate unauthorized access.
Monitor network traffic for any suspicious activities.

Long-Term Security Practices

Regularly update and patch all software and firmware.
Conduct security assessments and penetration testing to identify vulnerabilities.
Educate users on secure practices and the importance of strong passwords.
Implement network segmentation to limit the impact of potential breaches.

Patching and Updates

Ensure that the affected systems are updated with the latest patches provided by Inim Electronics to address the authenticated remote command injection vulnerability.