CVE-2021-31581 Explained : Impact and Mitigation

Akkadian Provisioning Manager Engine (PME) Shell Escape via 'vi' editor interface

Understanding CVE-2021-31581

This CVE discloses a vulnerability in Akkadian Provisioning Manager Engine (PME) that allows the escape of the restricted shell through the 'Edit MySQL Configuration' command.

What is CVE-2021-31581?

The issue in question enables an attacker to break out of the restricted shell offered by Akkadian PME by exploiting the 'Edit MySQL Configuration' command. By utilizing this command, a standard vi editor interface is initiated, providing an opportunity for an escape.

The Impact of CVE-2021-31581

The vulnerability poses a high severity threat with a CVSS base score of 7.9. It has a high impact on confidentiality, integrity, and requires elevated privileges to be exploited. The attack complexity is low, and the vector is local.

Technical Details of CVE-2021-31581

This section covers specific technical aspects of the CVE.

Vulnerability Description

The flaw in Akkadian PME allows malicious actors to escape the restricted shell through the 'Edit MySQL Configuration' command, leveraging a standard vi editor interface.

Affected Systems and Versions

Akkadian Provisioning Manager Engine (PME) versions up to and including 4.50.18 are impacted by this vulnerability.

Exploitation Mechanism

Attackers with high privileges can abuse the 'Edit MySQL Configuration' command to escape the restricted shell provided by Akkadian PME.

Mitigation and Prevention

To address CVE-2021-31581, immediate action and long-term security practices should be implemented.

Immediate Steps to Take

It is crucial to update to the patched versions, such as Akkadian OVA appliance 3.0 or later, Akkadian Provisioning Manager 5.0.2 or later, and Akkadian Appliance Manager 3.3.0.314-4a349e0 or later.

Long-Term Security Practices

Regularly monitor for security advisories and apply security updates promptly to protect against potential vulnerabilities.

Patching and Updates

Maintain a robust patch management process to ensure all systems are up to date with the latest security patches.