CVE-2022-34174 Observable timing discrepancy allows determining username validity in Jenkins

What is CVE-2022-34174?

CVE-2022-34174 is a high-severity vulnerability in Jenkins Jenkins, published on 22 Jun 2022. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

In Jenkins 2.355 and earlier, LTS 2.332.3 and earlier, an observable timing discrepancy on the login form allows distinguishing between login attempts with an invalid username, and login attempts with a valid username and wrong password, when using the Jenkins user database security realm.

Weakness: CWE-203

Which versions are affected by CVE-2022-34174?

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

Products include Jenkins Jenkins.

How do I fix CVE-2022-34174?

Upgrade org.jenkins-ci.main:jenkins-core to a fixed version for your release line: 2.332.4 or 2.356.

Is CVE-2022-34174 being exploited?

There is no known exploitation of CVE-2022-34174 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 BIT-jenkins-2022-34174, GHSA-9grj-j43m-mjqr.