CVE-2020-12736 Explained : Impact and Mitigation

Code42 environments with on-premises server versions 7.0.4 and earlier are vulnerable to possible remote code execution due to a server-side code injection risk when creating local users via Code42-generated emails.

Understanding CVE-2020-12736

Code42 environments with specific server versions are susceptible to remote code execution through email generation services.

What is CVE-2020-12736?

This CVE pertains to Code42 environments running on-premises server versions 7.0.4 and earlier, where a vulnerability exists that could allow for remote code execution.

The Impact of CVE-2020-12736

The vulnerability could potentially lead to server-side code injection, posing a significant security risk to affected systems.

Technical Details of CVE-2020-12736

Code42 environments with certain server versions are at risk of exploitation through email-related actions.

Vulnerability Description

When administrators create local users via Code42-generated emails and include template language code in the subject line, it may be interpreted by email generation services, enabling server-side code injection.

Affected Systems and Versions

Code42 environments with on-premises server versions 7.0.4 and earlier

Exploitation Mechanism

Administrators entering template language code in the subject line of Code42-generated emails

Mitigation and Prevention

It is crucial to take immediate and long-term security measures to address CVE-2020-12736.

Immediate Steps to Take

Update Code42 on-premises servers to versions beyond 7.0.4 to mitigate the vulnerability
Monitor and restrict administrator access to email template modifications

Long-Term Security Practices

Implement email content validation mechanisms to prevent code injection
Conduct regular security audits and penetration testing to identify and address vulnerabilities

Patching and Updates

Regularly apply patches and updates provided by Code42 to ensure system security