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.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| Jenkins project | Jenkins | unspecified – ≤ 2.355, unspecified – ≤ LTS 2.332.3 | — |
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Red Hat OpenShift 4 | jenkins | 2.361.1.1672840472-1.el8 | RHSA-2023:0777, RHSA-2023:0697, RHSA-2023:0017 |
| Red Hat OpenShift 4 | jenkins-2-plugins | 4.8.1672842762-1.el8 | RHSA-2023:0777, RHSA-2023:0697, RHSA-2023:0017 |
Alpine
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.24 | jenkins | 2.346.2-r0 | — |
| Alpine v3.23 | jenkins | 2.346.2-r0 | — |
| Alpine v3.22 | jenkins | 2.346.2-r0 | — |
| Alpine v3.21 | jenkins | 2.346.2-r0 | — |
| Alpine v3.20 | jenkins | 2.346.2-r0 | — |
Show 4 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.19 | jenkins | 2.346.2-r0 | — |
| Alpine v3.18 | jenkins | 2.346.2-r0 | — |
| Alpine v3.17 | jenkins | 2.346.2-r0 | — |
| Alpine v3.16 | jenkins | 2.346.2-r0 | — |
Affected packages
| Ecosystem | Package | Affected | Fixed | Record |
|---|---|---|---|---|
| Maven | org.jenkins-ci.main:jenkins-core | >= 2.334, < 2.356 | 2.356 | GHSA-9grj-j43m-mjqr |
| Maven | org.jenkins-ci.main:jenkins-core | < 2.332.4 | 2.332.4 | GHSA-9grj-j43m-mjqr |
Advisories 4
- RHSA-2023:0777 Red Hat Security Advisory: OpenShift Container Platform 4.9.56 security update Red Hat Security Advisories (RHSA) · Oct 13, 2026
- RHSA-2023:0017 Red Hat Security Advisory: OpenShift Container Platform 4.8.56 packages and security update Red Hat Security Advisories (RHSA) · Oct 13, 2026
- RHSA-2023:0697 Red Hat Security Advisory: OpenShift Container Platform 4.10.52 security update Red Hat Security Advisories (RHSA) · Sep 24, 2026
- WID-SEC-2022-0445 Jenkins: Mehrere Schwachstellen BSI CERT-Bund (WID) · Feb 22, 2023