CVE-2018-1000997 : Vulnerability Insights and Analysis

A path traversal vulnerability exists in the Stapler web framework used by Jenkins 2.145 and earlier, LTS 2.138.1 and earlier, allowing attackers to render routable objects using any view in Jenkins, exposing internal information about those objects not intended to be viewed.

Understanding CVE-2018-1000997

The vulnerability in the Stapler web framework can lead to unauthorized access to internal information within Jenkins.

What is CVE-2018-1000997?

The Stapler web framework, utilized by versions preceding Jenkins 2.145 and LTS 2.138.1, contains a path traversal vulnerability. This flaw enables attackers to display routable objects in Jenkins using any view, potentially exposing sensitive internal information.

The Impact of CVE-2018-1000997

Exploiting this vulnerability allows attackers to access internal information not intended for viewing, potentially compromising the confidentiality of data within Jenkins.

Technical Details of CVE-2018-1000997

The technical aspects of the vulnerability provide insight into its exploitation and affected systems.

Vulnerability Description

The vulnerability resides in various files within the Stapler web framework, including Facet.java, GroovyFacet.java, JellyFacet.java, JRubyFacet.java, and JSPFacet.java, allowing attackers to display routable objects in Jenkins.

Affected Systems and Versions

Jenkins versions earlier than 2.145 and LTS versions prior to 2.138.1

Exploitation Mechanism

Attackers can exploit the path traversal vulnerability to render routable objects using any view in Jenkins, potentially exposing sensitive internal information.

Mitigation and Prevention

Protecting systems from CVE-2018-1000997 involves immediate steps and long-term security practices.

Immediate Steps to Take

Update Jenkins to versions 2.145 or later for Jenkins and 2.138.1 or later for LTS to mitigate the vulnerability.
Monitor and restrict access to sensitive information within Jenkins.

Long-Term Security Practices

Regularly update Jenkins and its components to ensure the latest security patches are applied.
Implement access controls and least privilege principles to limit exposure of sensitive data.
Conduct regular security assessments and audits to identify and address vulnerabilities.

Patching and Updates

Apply patches provided by Jenkins to address the path traversal vulnerability and enhance system security.