CVE-2019-10319 : Exploit Details and Defense Strategies

Jenkins PAM Authentication Plugin versions 1.5 and earlier, excluding 1.4.1, have a vulnerability that allows users with Overall/Read permission to access sensitive information.

Understanding CVE-2019-10319

This CVE involves a missing permission check in the Jenkins PAM Authentication Plugin, potentially exposing critical system details.

What is CVE-2019-10319?

The vulnerability in Jenkins PAM Authentication Plugin versions 1.5 and earlier, except 1.4.1, enables users with specific permissions to view restricted data related to the system's user account.

The Impact of CVE-2019-10319

This vulnerability allows unauthorized users to access limited details about the file /etc/shadow and the user account Jenkins is using, potentially leading to unauthorized access and security breaches.

Technical Details of CVE-2019-10319

The technical aspects of the CVE provide insight into the specific vulnerability and its implications.

Vulnerability Description

A missing permission check in Jenkins PAM Authentication Plugin versions 1.5 and earlier, except 1.4.1, allows users with Overall/Read permission to obtain restricted information about critical system files and user accounts.

Affected Systems and Versions

Product: Jenkins PAM Authentication Plugin
Vendor: Jenkins project
Vulnerable Versions: 1.5 and earlier, excluding 1.4.1

Exploitation Mechanism

Unauthorized users with Overall/Read permission can exploit this vulnerability to gain access to sensitive system details, potentially compromising system security.

Mitigation and Prevention

Protecting systems from CVE-2019-10319 requires immediate actions and long-term security practices.

Immediate Steps to Take

Upgrade Jenkins PAM Authentication Plugin to a non-vulnerable version.
Restrict permissions to minimize the risk of unauthorized access.

Long-Term Security Practices

Regularly review and update permissions to ensure least privilege access.
Monitor system logs for any unauthorized access attempts.

Patching and Updates

Apply security patches provided by Jenkins project promptly to address the vulnerability and enhance system security.