CVE-2017-1000503 : Security Advisory and Response

Jenkins versions 2.81 through 2.94 (including version 2.89.1) were affected by a race condition issue that could lead to the incorrect execution order of commands during initialization, potentially causing the setup wizard to fail to initialize properly on the first startup in rare cases.

Understanding CVE-2017-1000503

This CVE entry highlights a race condition vulnerability in Jenkins versions 2.81 through 2.94, impacting the initialization process and potentially affecting the setup wizard's proper functioning.

What is CVE-2017-1000503?

A race condition in Jenkins versions 2.81 through 2.94 could result in commands being executed in the wrong order during initialization, leading to potential failures in setting up the security configurations.

The Impact of CVE-2017-1000503

The vulnerability could cause the setup wizard to fail to initialize correctly on the first startup in rare cases, resulting in security-related configurations not being set to their typical strict default values.

Technical Details of CVE-2017-1000503

This section provides detailed technical insights into the vulnerability.

Vulnerability Description

The race condition in Jenkins versions 2.81 through 2.94 could disrupt the execution order of commands during initialization, impacting the setup wizard's proper initialization.

Affected Systems and Versions

Jenkins versions 2.81 through 2.94 (inclusive), including version 2.89.1

Exploitation Mechanism

The vulnerability could be exploited by triggering the initialization process in a specific manner to cause commands to execute out of order.

Mitigation and Prevention

Protect your systems from CVE-2017-1000503 with these mitigation strategies.

Immediate Steps to Take

Update Jenkins to a patched version that addresses the race condition vulnerability.
Monitor Jenkins startup processes for any unusual behavior that could indicate exploitation.

Long-Term Security Practices

Regularly update Jenkins and other software components to mitigate potential vulnerabilities.
Implement secure coding practices to prevent race condition vulnerabilities in software development.

Patching and Updates

Apply security patches provided by Jenkins to fix the race condition issue and ensure the proper initialization of the setup wizard.