CVE-2020-2222 : Vulnerability Insights and Analysis
Learn about CVE-2020-2222 affecting Jenkins versions 2.244 and earlier, LTS 2.235.1 and earlier. Understand the impact, exploitation mechanism, and mitigation steps to prevent cross-site scripting attacks.
Jenkins 2.244 and earlier, LTS 2.235.1 and earlier versions are affected by a stored cross-site scripting vulnerability due to improper escaping of job names in the 'Keep this build forever' badge tooltip.
Understanding CVE-2020-2222
This CVE record highlights a security issue in Jenkins versions that could lead to cross-site scripting attacks.
What is CVE-2020-2222?
CVE-2020-2222 is a vulnerability in Jenkins versions 2.244 and earlier, LTS 2.235.1 and earlier, where the job name in the 'Keep this build forever' badge tooltip is not properly escaped, allowing for stored cross-site scripting attacks.
The Impact of CVE-2020-2222
This vulnerability could be exploited by attackers to execute malicious scripts in the context of a user's browser, potentially leading to unauthorized actions or data theft.
Technical Details of CVE-2020-2222
Jenkins 2.244 and earlier, LTS 2.235.1 and earlier are affected by this vulnerability.
Vulnerability Description
The vulnerability arises from the lack of proper escaping of job names in the 'Keep this build forever' badge tooltip, enabling stored cross-site scripting attacks.
Affected Systems and Versions
- Jenkins versions <= 2.244
- LTS versions <= 2.235.1
Exploitation Mechanism
Attackers can exploit this vulnerability by injecting malicious scripts into the job name field, which, when viewed in the 'Keep this build forever' badge tooltip, can execute unauthorized actions.
Mitigation and Prevention
It is crucial to take immediate steps to address and prevent the exploitation of this vulnerability.
Immediate Steps to Take
- Update Jenkins to a patched version that addresses the cross-site scripting vulnerability.
- Avoid displaying untrusted data in job names or tooltips.
Long-Term Security Practices
- Regularly monitor and update Jenkins to the latest secure versions.
- Educate users on safe practices to prevent cross-site scripting attacks.
Patching and Updates
- Apply security patches provided by Jenkins to fix the vulnerability and enhance system security.