CVE-2019-1003018 : Security Advisory and Response
Learn about CVE-2019-1003018, a vulnerability in Jenkins GitHub Authentication Plugin versions prior to 0.29, allowing attackers to access sensitive information. Find mitigation steps and preventive measures here.
This CVE-2019-1003018 article provides insights into a vulnerability in the Jenkins GitHub Authentication Plugin.
Understanding CVE-2019-1003018
This CVE involves a security flaw in versions of the Jenkins GitHub Authentication Plugin prior to 0.29, potentially exposing sensitive information.
What is CVE-2019-1003018?
The vulnerability is located in the config.jelly file within the GithubSecurityRealm folder, allowing attackers to access a Jenkins administrator's client secret.
The Impact of CVE-2019-1003018
The exposure of sensitive information could lead to unauthorized access and compromise of confidential data within Jenkins instances.
Technical Details of CVE-2019-1003018
This section delves into the specifics of the vulnerability.
Vulnerability Description
The flaw in Jenkins GitHub Authentication Plugin versions before 0.29 enables attackers to retrieve the configured client secret by manipulating a Jenkins administrator's web browser output.
Affected Systems and Versions
- Product: Jenkins GitHub Authentication Plugin
- Vendor: Jenkins project
- Vulnerable Versions: 0.29 and earlier
Exploitation Mechanism
Attackers can exploit this vulnerability by accessing a Jenkins administrator's web browser output or controlling the browser through malicious means.
Mitigation and Prevention
Protecting systems from CVE-2019-1003018 requires immediate actions and long-term security practices.
Immediate Steps to Take
- Upgrade the Jenkins GitHub Authentication Plugin to version 0.29 or later.
- Monitor and restrict access to Jenkins administrator interfaces.
- Regularly review and update Jenkins security configurations.
Long-Term Security Practices
- Implement multi-factor authentication for Jenkins accounts.
- Conduct regular security audits and penetration testing.
- Educate users on secure browsing practices and extension usage.
Patching and Updates
- Stay informed about security advisories from Jenkins project.
- Apply patches and updates promptly to address known vulnerabilities.