CVE-2018-1000864 Loop with Unreachable Exit Condition in Jenkins

What is CVE-2018-1000864?

CVE-2018-1000864 is a medium-severity denial of service vulnerability in Jenkins Jenkins, published on 10 Dec 2018. Any signed-in user can exploit it over the network, with no action from the victim.

Official description

A denial of service vulnerability exists in Jenkins 2.153 and earlier, LTS 2.138.3 and earlier in CronTab.java that allows attackers with Overall/Read permission to have a request handling thread enter an infinite loop.

Weakness: CWE-835

Which versions are affected by CVE-2018-1000864?

4 open source packages ship an affected version, including org.jenkins-ci.main:jenkins-core. It affects 2 products.

Products include Jenkins Jenkins, Redhat Openshift Container Platform.

How do I fix CVE-2018-1000864?

Upgrade org.jenkins-ci.main:jenkins-core to a fixed version for your release line: 2.138.4 or 2.154.

Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.

Is CVE-2018-1000864 being exploited?

There is no known exploitation of CVE-2018-1000864 in the wild and no public exploit code.

Other vulnerabilities in Jenkins Jenkins

• CVE-2024-23897 Jenkins Command Line Interface (CLI) Path Traversal Exploited Critical 9.8
• CVE-2018-1000861 Jenkins Stapler Web Framework Deserialization of Untrusted Data Exploited Critical 9.8
• CVE-2017-1000353 Jenkins Remote Code Execution Exploited Critical 9.8
• CVE-2015-5317 Jenkins User Interface (UI) Information Disclosure Exploited High 7.5
• CVE-2021-21690 Multiple vulnerabilities allow bypassing path filtering of agent-to-controller access control in Jenkins Critical 9.8

All Jenkins Jenkins vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as GHSA-9cjv-93g7-c6mv.