Jenkins 2.554 and earlier, LTS 2.541.2 and earlier does not safely handle symbolic links during the extraction of .tar and .tar.gz archives, allowing crafted archives to write files to arbitrary locations on the filesystem, restricted only by file system access permissions of the user running Jenkins. This can be exploited to deploy malicious scripts or plugins on the controller by attackers with Item/Configure permission, or able to control agent processes.
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 |
|---|---|---|---|
| Jenkins | Jenkins | * | 2.541.3 (excluding) |
| Jenkins | Jenkins | * | 2.555 (excluding) |
| OpenShift Developer Tools and Services 4.12 | RedHat | ocp-tools-4/jenkins-rhel8:1776764096 | * |
| OpenShift Developer Tools and Services 4.13 | RedHat | ocp-tools-4/jenkins-rhel8:1776764096 | * |
| OpenShift Developer Tools and Services 4.14 | RedHat | ocp-tools-4/jenkins-rhel8:1776762347 | * |
| OpenShift Developer Tools and Services 4.15 | RedHat | ocp-tools-4/jenkins-rhel8:1776762347 | * |
| OpenShift Developer Tools and Services 4.16 | RedHat | ocp-tools-4/jenkins-rhel9:1776944215 | * |
| OpenShift Developer Tools and Services 4.17 | RedHat | ocp-tools-4/jenkins-rhel9:1776944215 | * |
| OpenShift Developer Tools and Services 4.18 | RedHat | ocp-tools-4/jenkins-rhel9:1776944215 | * |
| OpenShift Developer Tools and Services 4.19 | RedHat | ocp-tools-4/jenkins-rhel9:1776944215 | * |
| OpenShift Developer Tools and Services 4.2 | RedHat | ocp-tools-4/jenkins-rhel9:1776944215 | * |
| OpenShift Developer Tools and Services 4.21 | RedHat | ocp-tools-4/jenkins-rhel9:1776944215 | * |
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