CVE-2017-1000243 : Security Advisory and Response

The Jenkins Favorite Plugin version 2.1.4 and earlier allow unauthorized users to modify the favorites of any other user.

Understanding CVE-2017-1000243

This CVE relates to a vulnerability in the Jenkins Favorite Plugin that lacks permission verification, enabling users to alter the favorite status of other users.

What is CVE-2017-1000243?

The Jenkins Favorite Plugin version 2.1.4 and older do not perform permission checks when changing favorite status, allowing any user to set any other user's favorites.

The Impact of CVE-2017-1000243

Unauthorized users can manipulate the favorite status of any user within the Jenkins environment, potentially leading to unauthorized access or data manipulation.

Technical Details of CVE-2017-1000243

The technical aspects of this CVE include:

Vulnerability Description

The Jenkins Favorite Plugin version 2.1.4 and earlier lack permission verification while altering favorite status, granting every user the ability to modify the favorites of any other user.

Affected Systems and Versions

Product: Jenkins Favorite Plugin
Vendor: N/A
Versions affected: 2.1.4 and earlier

Exploitation Mechanism

Unauthorized users can exploit this vulnerability by directly altering the favorite status of other users without proper permission checks.

Mitigation and Prevention

To address CVE-2017-1000243, consider the following steps:

Immediate Steps to Take

Upgrade to a patched version of the Jenkins Favorite Plugin that includes permission verification.
Monitor user activity for any unauthorized changes to favorites.

Long-Term Security Practices

Implement role-based access control to restrict users from modifying others' favorites.
Regularly review and update security configurations to prevent similar vulnerabilities.

Patching and Updates

Apply security patches provided by Jenkins to fix the vulnerability and enhance overall system security.