Jenkins Pipeline: Shared Groovy Libraries Plugin 552.vd9cc05b8a2e1 and earlier follows symbolic links to locations outside of the expected Pipeline library when reading files using the libraryResource step, allowing attackers able to configure Pipelines to read arbitrary files on the Jenkins controller file system.
Weakness
The product attempts to access a file based on the filename, but it does not properly prevent that filename from identifying a link or shortcut that resolves to an unintended resource.
Affected Software
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Pipeline:shared_groovy_libraries | Jenkins | * | 552.vd9cc05b8a2e1 (including) |
| Red Hat OpenShift Container Platform 3.11 | RedHat | jenkins-2-plugins-0:3.11.1650371376-1.el7 | * |
| Red Hat OpenShift Container Platform 4.10 | RedHat | jenkins-2-plugins-0:4.10.1647505461-1.el8 | * |
| Red Hat OpenShift Container Platform 4.6 | RedHat | jenkins-2-plugins-0:4.6.1650364520-1.el8 | * |
| Red Hat OpenShift Container Platform 4.7 | RedHat | jenkins-2-plugins-0:4.7.1648800585-1.el8 | * |
| Red Hat OpenShift Container Platform 4.8 | RedHat | jenkins-2-plugins-0:4.8.1646993358-1.el8 | * |
| Red Hat OpenShift Container Platform 4.9 | RedHat | jenkins-2-plugins-0:4.9.1647580879-1.el8 | * |
Potential Mitigations
- Follow the principle of least privilege when assigning access rights to entities in a software system.
- Denying access to a file can prevent an attacker from replacing that file with a link to a sensitive file. Ensure good compartmentalization in the system to provide protected areas that can be trusted.
Related Attack Patterns
- https://cwe.mitre.org/data/definitions/132.html
- https://cwe.mitre.org/data/definitions/17.html
- https://cwe.mitre.org/data/definitions/35.html
- https://cwe.mitre.org/data/definitions/76.html