CVE-2020-1706 Explained : Impact and Mitigation

CVE-2020-1706 pertains to a security vulnerability found in openshift/apb-tools-container versions that could allow attackers to escalate their privileges by modifying permissions of system files.

Understanding CVE-2020-1706

This CVE affects Red Hat's openshift/apb-tools-container in certain versions, potentially enabling unauthorized users to alter system permissions.

What is CVE-2020-1706?

CVE-2020-1706 involves a flaw in openshift/apb-tools-container, allowing users to tamper with critical system files like /etc/passwd, thereby elevating their permissions within the container.

The Impact of CVE-2020-1706

The vulnerability poses a high severity risk as unauthorized users could exploit it to escalate their privileges, compromising system integrity and confidentiality.

Technical Details of CVE-2020-1706

This section delves into the specific technical aspects of CVE-2020-1706.

Vulnerability Description

The issue arises in openshift/apb-tools-container versions 3.11 and 4.1 to 4.3, where multiple containers adjust the permissions of /etc/passwd, enabling non-root users to modify it, potentially leading to privilege escalation.

Affected Systems and Versions

Vendor: Red Hat
Product: openshift/apb-tools-container
Affected Versions:
openshift-enterprise version 3.11
from openshift-enterprise version 4.1 to, including 4.3

Exploitation Mechanism

Attackers with access to the container can exploit the vulnerability by modifying /etc/passwd, adding a user, and subsequently increasing their privileges within the container.

Mitigation and Prevention

To safeguard systems from CVE-2020-1706, mitigation strategies and preventive measures are crucial.

Immediate Steps to Take

Limit container access to trusted users only
Regularly monitor and review permissions of critical system files
Implement least privilege principles for user access

Long-Term Security Practices

Conduct regular security audits and vulnerability scans
Train users on secure container practices and permissions management

Patching and Updates

Ensure timely application of patches and updates provided by Red Hat to address the CVE-2020-1706 vulnerability.