A session fixation vulnerability exists in Jenkins 2.145 and earlier, LTS 2.138.1 and earlier in core/src/main/java/hudson/security/HudsonPrivateSecurityRealm.java that prevented Jenkins from invalidating the existing session and creating a new one when a user signed up for a new user account.
Authenticating a user, or otherwise establishing a new user session, without invalidating any existing session identifier gives an attacker the opportunity to steal authenticated sessions.
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Jenkins | Jenkins | * | 2.138.1 (including) |
| Jenkins | Jenkins | * | 2.145 (including) |
| Red Hat OpenShift Container Platform 3.11 | RedHat | atomic-enterprise-service-catalog-1:3.11.51-1.git.1671.2d16650.el7 | * |
| Red Hat OpenShift Container Platform 3.11 | RedHat | atomic-openshift-0:3.11.51-1.git.0.1560686.el7 | * |
| Red Hat OpenShift Container Platform 3.11 | RedHat | atomic-openshift-cluster-autoscaler-0:3.11.51-1.git.0.0aa9fc2.el7 | * |
| Red Hat OpenShift Container Platform 3.11 | RedHat | atomic-openshift-descheduler-0:3.11.51-1.git.300.89070e8.el7 | * |
| Red Hat OpenShift Container Platform 3.11 | RedHat | atomic-openshift-dockerregistry-0:3.11.51-1.git.446.d29ce0e.el7 | * |
| Red Hat OpenShift Container Platform 3.11 | RedHat | atomic-openshift-metrics-server-0:3.11.51-1.git.52.03e3a91.el7 | * |
| Red Hat OpenShift Container Platform 3.11 | RedHat | atomic-openshift-node-problem-detector-0:3.11.51-1.git.254.22189b0.el7 | * |
| Red Hat OpenShift Container Platform 3.11 | RedHat | atomic-openshift-service-idler-0:3.11.51-1.git.14.813574a.el7 | * |
| Red Hat OpenShift Container Platform 3.11 | RedHat | atomic-openshift-web-console-0:3.11.51-1.git.324.0ae64ed.el7 | * |
| Red Hat OpenShift Container Platform 3.11 | RedHat | cri-o-0:1.11.10-1.rhaos3.11.git42c86f0.el7 | * |
| Red Hat OpenShift Container Platform 3.11 | RedHat | golang-github-openshift-oauth-proxy-0:3.11.51-1.git.419.1af74df.el7 | * |
| Red Hat OpenShift Container Platform 3.11 | RedHat | golang-github-prometheus-alertmanager-0:3.11.51-1.git.0.50a0687.el7 | * |
| Red Hat OpenShift Container Platform 3.11 | RedHat | golang-github-prometheus-node_exporter-0:3.11.51-1.git.1063.12dd8be.el7 | * |
| Red Hat OpenShift Container Platform 3.11 | RedHat | golang-github-prometheus-prometheus-0:3.11.51-1.git.5023.0ad933c.el7 | * |
| Red Hat OpenShift Container Platform 3.11 | RedHat | jenkins-0:2.138.2.1542054911-1.el7 | * |
| Red Hat OpenShift Container Platform 3.11 | RedHat | jenkins-2-plugins-0:3.11.1542061886-1.el7 | * |
| Red Hat OpenShift Container Platform 3.11 | RedHat | kibana-0:5.6.13-1.el7 | * |
| Red Hat OpenShift Container Platform 3.11 | RedHat | openshift-ansible-0:3.11.51-2.git.0.51c90a3.el7 | * |
| Red Hat OpenShift Container Platform 3.11 | RedHat | openshift-enterprise-autoheal-0:3.11.51-1.git.219.8ea4275.el7 | * |
| Red Hat OpenShift Container Platform 3.11 | RedHat | openshift-enterprise-cluster-capacity-0:3.11.51-1.git.380.ffa21af.el7 | * |
| Red Hat OpenShift Container Platform 3.11 | RedHat | openshift-monitor-project-lifecycle-0:3.11.51-1.git.59.7b59e29.el7 | * |
| Red Hat OpenShift Container Platform 3.11 | RedHat | openshift-monitor-sample-app-0:3.11.51-1.git.5.f6d0188.el7 | * |
Such a scenario is commonly observed when:
In the generic exploit of session fixation vulnerabilities, an attacker creates a new session on a web application and records the associated session identifier. The attacker then causes the victim to associate, and possibly authenticate, against the server using that session identifier, giving the attacker access to the user’s account through the active session.