CVE-2018-1999045 Improper Authentication in Jenkins

What is CVE-2018-1999045?

CVE-2018-1999045 is a medium-severity authentication bypass vulnerability in Jenkins Jenkins, published on 23 Aug 2018. Any signed-in user can exploit it over the network, with no action from the victim.

Official description

A improper authentication vulnerability exists in Jenkins 2.137 and earlier, 2.121.2 and earlier in SecurityRealm.java, TokenBasedRememberMeServices2.java that allows attackers with a valid cookie to remain logged in even if that feature is disabled.

Weakness: CWE-287

Which versions are affected by CVE-2018-1999045?

4 open source packages ship an affected version, including org.jenkins-ci.main:jenkins-core. It affects 1 product.

Products include Jenkins Jenkins.

How do I fix CVE-2018-1999045?

Upgrade org.jenkins-ci.main:jenkins-core to a fixed version for your release line: 2.121.3 or 2.138.

Upgrade, and rotate credentials and sessions that may have been exposed. More about Authentication bypass.

Is CVE-2018-1999045 being exploited?

There is no known exploitation of CVE-2018-1999045 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-q4cq-r7hg-pxqq.