CVE-2020-27187 : Vulnerability Insights and Analysis

An issue was discovered in KDE Partition Manager 4.1.0 before 4.2.0. The kpmcore_externalcommand helper contains a logic flaw in which the service invoking D-Bus is not properly checked. This vulnerability allows an attacker on the local machine to execute malicious commands and potentially gain full root privileges while KDE Partition Manager is running.

Understanding CVE-2020-27187

This CVE identifies a logic flaw in KDE Partition Manager that can be exploited locally to escalate privileges.

What is CVE-2020-27187?

The vulnerability in KDE Partition Manager allows an attacker to manipulate system files and execute commands to escalate privileges.

The Impact of CVE-2020-27187

The exploitation of this vulnerability can lead to an attacker gaining full root privileges on the affected system, compromising its security.

Technical Details of CVE-2020-27187

This section provides technical details about the vulnerability.

Vulnerability Description

The kpmcore_externalcommand helper in KDE Partition Manager 4.1.0 before 4.2.0 does not properly check the service invoking D-Bus, enabling local attackers to execute arbitrary commands.

Affected Systems and Versions

Systems running KDE Partition Manager version 4.1.0 before 4.2.0 are vulnerable.

Exploitation Mechanism

An attacker on the local machine can replace /etc/fstab and execute mount and other partitioning related commands while the KDE Partition Manager is active.
By using the mount command, the attacker can escalate privileges to gain full root access.

Mitigation and Prevention

Protect your system from CVE-2020-27187 with the following steps:

Immediate Steps to Take

Update KDE Partition Manager to version 4.2.0 or later to mitigate the vulnerability.
Monitor system files and configurations for any unauthorized changes.

Long-Term Security Practices

Implement the principle of least privilege to restrict user access and limit potential damage from security breaches.
Regularly audit and review system logs for any suspicious activities.

Patching and Updates

Stay informed about security advisories and promptly apply patches and updates to all software components to address known vulnerabilities.