QID 730064

Date Published: 2021-04-29

QID 730064: Jenkins Core Denial Of Service Vulnerability(Jenkins Security Advisory 2021-04-20)

Jenkins is an open-source automation server written in Java. Jenkins helps to automate the non-human part of the software development process, with continuous integration and facilitating technical aspects of continuous delivery.

Affected Versions:
Jenkins weekly up to and including 2.285
Jenkins LTS up to and including 2.277.2

Fixed Versions:
Jenkins weekly should be updated to version 2.286
Jenkins LTS should be updated to version 2.277.3

QID Detection Logic(Unauthenticated):
This QID checks for vulnerable version by sending a crafted GET request to Jenkins. This QID also detects the vulnerable version from login page or HTTP header.

This vulnerability may allow unauthenticated attackers to cause a denial of service if Winstone-Jetty is configured to handle SSL/TLS connections.

  • CVSS V3 rated as High - 7.5 severity.
  • CVSS V2 rated as High - 7.8 severity.
    • Solution
    Customers are advised to upgrade to latest Jenkins version
    For further details refer to Jenkins Security Advisory 2021-04-20
    Vendor References

    CVEs related to QID 730064

    CVE-2021-28165 |
    Software Advisories
    Advisory ID Software Component Link
    Jenkins Security Advisory 2021-04-20 URL Logo www.jenkins.io/security/advisory/2021-04-20/
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