CVE-2019-12491 Explained : Impact and Mitigation

OnApp versions prior to 5.0.0-88, 5.5.0-93, and 6.0.0-196 contain a security vulnerability that allows attackers to execute unrestricted commands with root privileges on servers managed by OnApp for XEN/KVM hypervisors.

Understanding CVE-2019-12491

This CVE was made public on June 7, 2019.

What is CVE-2019-12491?

Versions of OnApp before specified versions have a flaw enabling attackers to run commands with root privileges on servers managed by OnApp for XEN/KVM hypervisors.

The Impact of CVE-2019-12491

Attackers with control of a server in a cloud environment can exploit this vulnerability to execute commands with root privileges on target servers.

Technical Details of CVE-2019-12491

OnApp versions prior to 5.0.0-88, 5.5.0-93, and 6.0.0-196 are affected.

Vulnerability Description

The flaw allows attackers to execute arbitrary commands with root privileges on servers managed by OnApp for XEN/KVM hypervisors.

Affected Systems and Versions

OnApp versions before 5.0.0-88
OnApp versions before 5.5.0-93
OnApp versions before 6.0.0-196

Exploitation Mechanism

Attacker needs control of at least one server in a specific cloud environment
Once in control, the attacker can create and initiate any command to be executed with root privileges on the target server.

Mitigation and Prevention

It is crucial to take immediate steps to address and prevent exploitation of this vulnerability.

Immediate Steps to Take

Update OnApp to versions 5.0.0-88, 5.5.0-93, or 6.0.0-196
Monitor server activities for any suspicious commands

Long-Term Security Practices

Implement strong access controls and authentication mechanisms
Regularly audit and review server configurations

Patching and Updates

Apply patches and updates provided by OnApp to fix the vulnerability