CVE-2019-10395 : What You Need to Know
Learn about CVE-2019-10395 affecting Jenkins Build Environment Plugin versions 1.6 and earlier, enabling cross-site scripting attacks in Jenkins 2.145 and older. Find mitigation steps and prevention measures.
The Jenkins Build Environment Plugin versions 1.6 and below had a flaw that could lead to a cross-site scripting vulnerability.
Understanding CVE-2019-10395
The vulnerability in the Jenkins Build Environment Plugin could allow users to exploit a cross-site scripting vulnerability in certain Jenkins versions.
What is CVE-2019-10395?
The Jenkins Build Environment Plugin versions 1.6 and earlier did not properly escape variables displayed on its views, potentially enabling a cross-site scripting attack in Jenkins versions 2.145, 2.138.1, or older. This vulnerability could be abused by users with the ability to modify job/build properties.
The Impact of CVE-2019-10395
The vulnerability could allow malicious users to execute arbitrary scripts in the context of a user's browser, potentially leading to unauthorized actions or data theft.
Technical Details of CVE-2019-10395
The technical aspects of the CVE-2019-10395 vulnerability are as follows:
Vulnerability Description
The Jenkins Build Environment Plugin 1.6 and earlier did not properly escape variables shown on its views, creating a cross-site scripting vulnerability in Jenkins 2.145, 2.138.1, or older.
Affected Systems and Versions
- Product: Jenkins Build Environment Plugin
- Vendor: Jenkins project
- Vulnerable Versions: 1.6 and earlier
Exploitation Mechanism
The vulnerability could be exploited by users who have the ability to modify job/build properties, allowing them to inject malicious scripts into the Jenkins environment.
Mitigation and Prevention
To address CVE-2019-10395, consider the following mitigation strategies:
Immediate Steps to Take
- Upgrade the Jenkins Build Environment Plugin to a non-vulnerable version.
- Restrict access to users who can modify job/build properties.
Long-Term Security Practices
- Regularly monitor and update Jenkins and its plugins to the latest secure versions.
- Educate users on secure coding practices to prevent cross-site scripting vulnerabilities.
Patching and Updates
- Apply patches and updates provided by Jenkins to fix the vulnerability and enhance overall security.