CVE-2020-12641 Explained : Impact and Mitigation

Roundcube Webmail before 1.4.4 allows attackers to execute arbitrary code via shell metacharacters in a configuration setting for im_convert_path or im_identify_path.

Understanding CVE-2020-12641

This CVE involves a vulnerability in Roundcube Webmail that could lead to arbitrary code execution.

What is CVE-2020-12641?

CVE-2020-12641 is a security vulnerability in Roundcube Webmail that allows attackers to execute arbitrary code by exploiting shell metacharacters in specific configuration settings.

The Impact of CVE-2020-12641

The exploitation of this vulnerability can result in unauthorized execution of arbitrary code by malicious actors, potentially leading to further compromise of the affected system.

Technical Details of CVE-2020-12641

This section provides more in-depth technical information about the CVE.

Vulnerability Description

The vulnerability exists in the rcube_image.php file in Roundcube Webmail before version 1.4.4, enabling attackers to execute arbitrary code through shell metacharacters in the configuration settings for im_convert_path or im_identify_path.

Affected Systems and Versions

Product: Roundcube Webmail
Vendor: N/A
Versions affected: All versions before 1.4.4

Exploitation Mechanism

Attackers can exploit this vulnerability by injecting malicious shell metacharacters into the configuration settings for im_convert_path or im_identify_path, allowing them to execute arbitrary code on the target system.

Mitigation and Prevention

Protecting systems from CVE-2020-12641 requires immediate actions and long-term security practices.

Immediate Steps to Take

Update Roundcube Webmail to version 1.4.4 or later to mitigate the vulnerability.
Monitor system logs for any suspicious activities that could indicate exploitation attempts.

Long-Term Security Practices

Regularly update software and applications to the latest versions to patch known vulnerabilities.
Implement strong access controls and least privilege principles to limit the impact of potential security breaches.
Conduct regular security assessments and penetration testing to identify and address any security weaknesses.

Patching and Updates

Roundcube Webmail users should apply the security updates provided in version 1.4.4 to address the vulnerability and enhance system security.