CVE-2018-1000863 Improper Limitation of a Pathname to a Restricted Directory in Jenkins

What is CVE-2018-1000863?

CVE-2018-1000863 is a high-severity vulnerability in Jenkins Jenkins, published on 10 Dec 2018. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

A data modification vulnerability exists in Jenkins 2.153 and earlier, LTS 2.138.3 and earlier in User.java, IdStrategy.java that allows attackers to submit crafted user names that can cause an improper migration of user record storage formats, potentially preventing the victim from logging into Jenkins.

Weakness: CWE-22

Which versions are affected by CVE-2018-1000863?

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-2018-1000863?

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

Is CVE-2018-1000863 being exploited?

There is no known exploitation of CVE-2018-1000863 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-4jhm-5f7g-75fp.