CVE-2017-1000505 : What You Need to Know

Jenkins Script Security Plugin version 1.36 and earlier allowed users to exploit a type coercion feature in Groovy, enabling them to create new

File

objects from strings. This vulnerability granted unauthorized access to read any file on the Jenkins master file system.

Understanding CVE-2017-1000505

Before Jenkins Script Security Plugin version 1.36, users with the privilege to configure sandboxed Groovy scripts could abuse type coercion in Groovy to access and read files on the Jenkins master file system.

What is CVE-2017-1000505?

Users could generate new

File

objects from strings using type coercion in Groovy, leading to unauthorized access to sensitive files on the Jenkins master file system.

The Impact of CVE-2017-1000505

This vulnerability allowed malicious users to read arbitrary files on the Jenkins master file system, potentially exposing sensitive information and compromising the integrity of the system.

Technical Details of CVE-2017-1000505

Jenkins Script Security Plugin version 1.36 and earlier were affected by this vulnerability.

Vulnerability Description

Users could exploit a feature in Groovy to create new

File

objects from strings, enabling unauthorized access to read any file on the Jenkins master file system.

Affected Systems and Versions

Jenkins Script Security Plugin version 1.36 and earlier

Exploitation Mechanism

Users with the ability to configure sandboxed Groovy scripts could abuse type coercion in Groovy to access and read files on the Jenkins master file system.

Mitigation and Prevention

It is crucial to take immediate steps to address and prevent the exploitation of CVE-2017-1000505.

Immediate Steps to Take

Upgrade Jenkins Script Security Plugin to version 1.36 or later to mitigate the vulnerability.
Restrict access to sensitive files and directories within the Jenkins master file system.

Long-Term Security Practices

Regularly review and update security configurations for Jenkins and its plugins.
Educate users on secure coding practices and the risks associated with type coercion vulnerabilities.

Patching and Updates

Apply patches and updates provided by Jenkins to address security vulnerabilities and enhance system security.