CVE-2019-14287 : Vulnerability Insights and Analysis

Sudo vulnerability allowing bypass of policy blacklists and session PAM modules.

Understanding CVE-2019-14287

Sudo vulnerability pre-version 1.8.28 enables attackers to bypass specific policy blacklists and PAM modules.

What is CVE-2019-14287?

Prior to version 1.8.28, a vulnerability in Sudo allows attackers with access to a Runas ALL sudoer account to bypass policy blacklists and session PAM modules by manipulating the user ID in the sudo command.

The Impact of CVE-2019-14287

Attackers can cause incorrect logging by bypassing specific configurations like !root and USER= logging.

Technical Details of CVE-2019-14287

Sudo vulnerability details.

Vulnerability Description

In Sudo before 1.8.28, attackers with Runas ALL sudoer access can bypass policy blacklists and PAM modules, leading to incorrect logging.

Affected Systems and Versions

Sudo versions before 1.8.28 are affected.

Exploitation Mechanism

Attackers exploit the vulnerability by using a manipulated user ID in the sudo command.

Mitigation and Prevention

Protecting systems from CVE-2019-14287.

Immediate Steps to Take

Update Sudo to version 1.8.28 or newer.
Monitor system logs for any suspicious activities.

Long-Term Security Practices

Implement the principle of least privilege to restrict sudo access.
Regularly review and update sudo configurations.

Patching and Updates

Apply patches provided by Sudo to address the vulnerability.