CVE-2020-14019 : Exploit Details and Defense Strategies

Open-iSCSI rtslib-fb through 2.1.72 has weak permissions for /etc/target/saveconfig.json due to the use of shutil.copyfile instead of shutil.copy, leading to permissions not being preserved.

Understanding CVE-2020-14019

This CVE involves weak permissions in Open-iSCSI rtslib-fb, potentially exposing sensitive configuration files.

What is CVE-2020-14019?

CVE-2020-14019 highlights a vulnerability in Open-iSCSI rtslib-fb versions up to 2.1.72, where inadequate permissions are set for a critical configuration file.

The Impact of CVE-2020-14019

The vulnerability could allow unauthorized users to access or modify sensitive configuration data, leading to potential security breaches or system compromise.

Technical Details of CVE-2020-14019

Open-iSCSI rtslib-fb vulnerability details and affected systems.

Vulnerability Description

The issue arises from the incorrect usage of shutil.copyfile instead of shutil.copy, resulting in the loss of permissions for /etc/target/saveconfig.json.

Affected Systems and Versions

Product: Not applicable
Vendor: Not applicable
Versions: Up to 2.1.72

Exploitation Mechanism

Attackers could exploit this vulnerability by gaining access to the affected system and manipulating the vulnerable file to escalate privileges or access sensitive information.

Mitigation and Prevention

Steps to mitigate and prevent the CVE-2020-14019 vulnerability.

Immediate Steps to Take

Apply patches or updates provided by the vendor promptly.
Restrict access to critical system files to authorized personnel only.
Monitor file permissions and access logs for any suspicious activities.

Long-Term Security Practices

Regularly review and update file permissions and access controls.
Conduct security audits and penetration testing to identify and address vulnerabilities proactively.
Educate users on best practices for file handling and system security.

Patching and Updates

Ensure that the Open-iSCSI rtslib-fb software is updated to a version that addresses the permission issue to prevent exploitation.