CVE-2020-2195 : What You Need to Know
Learn about CVE-2020-2195 affecting Jenkins Compact Columns Plugin versions 1.11 and earlier, allowing stored cross-site scripting attacks by users with Job/Configure permission. Find mitigation steps and best practices.
Jenkins Compact Columns Plugin 1.11 and earlier versions are affected by a stored cross-site scripting vulnerability due to displaying unprocessed job descriptions in tooltips.
Understanding CVE-2020-2195
This CVE involves a security issue in the Jenkins Compact Columns Plugin that allows stored cross-site scripting attacks.
What is CVE-2020-2195?
Jenkins Compact Columns Plugin versions 1.11 and earlier expose unprocessed job descriptions in tooltips, enabling stored cross-site scripting attacks by users with Job/Configure permission.
The Impact of CVE-2020-2195
The vulnerability can be exploited by malicious users to execute arbitrary scripts in the context of the victim's browser, potentially leading to unauthorized actions or data theft.
Technical Details of CVE-2020-2195
The technical aspects of the vulnerability are as follows:
Vulnerability Description
The issue stems from the plugin's failure to properly sanitize and validate user input, allowing attackers to inject malicious scripts into job descriptions.
Affected Systems and Versions
- Product: Jenkins Compact Columns Plugin
- Vendor: Jenkins project
- Versions Affected: <= 1.11 (unspecified version type: custom)
Exploitation Mechanism
Attackers with Job/Configure permission can exploit this vulnerability by inserting malicious scripts into job descriptions, which are then executed when users hover over tooltips.
Mitigation and Prevention
To address CVE-2020-2195, consider the following mitigation strategies:
Immediate Steps to Take
- Upgrade the Jenkins Compact Columns Plugin to a version beyond 1.11 that includes a fix for the vulnerability.
- Restrict Job/Configure permissions to trusted users only.
Long-Term Security Practices
- Regularly review and update plugins to ensure they are patched against known vulnerabilities.
- Educate users on secure coding practices to prevent cross-site scripting attacks.
Patching and Updates
- Stay informed about security advisories from Jenkins project and promptly apply patches to vulnerable plugins.