CVE-2019-1003049 : Exploit Details and Defense Strategies
Learn about CVE-2019-1003049, a Jenkins vulnerability allowing users to remain authenticated in older versions due to a fix not invalidating existing caches. Find mitigation steps and prevention measures.
This CVE relates to a vulnerability in Jenkins that allows users who cached their CLI authentication before specific updates to remain authenticated in certain versions due to a fix not invalidating existing caches.
Understanding CVE-2019-1003049
This CVE impacts users who cached their CLI authentication before Jenkins was updated to versions 2.150.2 or newer, or 2.160 and newer.
What is CVE-2019-1003049?
Users who cached their CLI authentication before Jenkins was updated to versions 2.150.2 or newer, or 2.160 and newer, would remain authenticated in Jenkins 2.171 and earlier and Jenkins LTS 2.164.1 and earlier.
The Impact of CVE-2019-1003049
The vulnerability allows users to remain authenticated in older Jenkins versions due to a fix not rejecting existing remoting-based CLI authentication caches.
Technical Details of CVE-2019-1003049
This section provides more technical insights into the vulnerability.
Vulnerability Description
The fix implemented for CVE-2019-1003004 did not invalidate existing CLI authentication caches based on remoting, allowing users to remain authenticated in Jenkins 2.171 and earlier and Jenkins LTS 2.164.1 and earlier.
Affected Systems and Versions
- Product: Jenkins
- Vendor: Jenkins project
- Versions Affected: 2.171 and earlier, LTS 2.164.1 and earlier
Exploitation Mechanism
The vulnerability allows users who cached their CLI authentication before specific updates to continue to be authenticated in older Jenkins versions.
Mitigation and Prevention
To address CVE-2019-1003049, users should take immediate steps and implement long-term security practices.
Immediate Steps to Take
- Clear CLI authentication caches in affected versions.
- Re-authenticate CLI users to ensure proper authentication.
Long-Term Security Practices
- Regularly update Jenkins to the latest versions to ensure fixes for known vulnerabilities.
- Educate users on the importance of updating authentication credentials.
Patching and Updates
Ensure that Jenkins is regularly updated to the latest versions to mitigate vulnerabilities and apply necessary security patches.