Kircheneer

**Name of the Vulnerable Software and Affected Versions** Nautobot versions prior to 1.6.10 Nautobot versions prior to 2.1.2 **Description** Nautobot is a Network Source of Truth and Network Automation Platform built as a web application. Due to inadequate input sanitization, any user-editable fields that support Markdown rendering are potentially susceptible to cross-site scripting (XSS) attacks via maliciously crafted data. The affected fields include `Circuit.comments`, `Cluster.comments`, `CustomField.description`, `Device.comments`, `DeviceRedundancyGroup.comments`, `DeviceType.comments`, `Job.description`, `JobLogEntry.message`, `Location.comments`, `Note.note`, `PowerFeed.comments`, `Provider.noc contact`, `Provider.admin contact`, `Provider.comments`, `ProviderNetwork.comments`, `Rack.comments`, `Tenant.comments`, `VirtualMachine.comments`, contents of any custom fields of type `markdown`, job class `description` attributes, and the `SUPPORT MESSAGE` system configuration setting. **Recommendations** For Nautobot versions prior to 1.6.10, update to version 1.6.10 or later to resolve the issue. For Nautobot versions prior to 2.1.2, update to version 2.1.2 or later to resolve the issue. As a temporary workaround, consider restricting access to user-editable fields that support Markdown rendering until a patch is applied.

**Name of the Vulnerable Software and Affected Versions** Nautobot versions 1.x through 1.6.6 Nautobot versions 2.0.x through 2.0.5 **Description** Nautobot is a Network Source of Truth and Network Automation Platform built as a web application atop the Django Python framework with a PostgreSQL or MySQL database. The URLs "/files/get/?name=..." and "/files/download/?name=..." are used to provide admin access to files that have been uploaded as part of a run request for a Job that has FileVar inputs. Under normal operation, these files are ephemeral and are deleted once the Job in question runs. However, in the default implementation used in Nautobot, as provided by `django-db-file-storage`, these URLs do not by default require any user authentication to access; they should instead be restricted to only users who have permissions to view Nautobot's `FileProxy` model instances. Note that no URL mechanism is provided for listing or traversal of the available file `name` values, so in practice, an unauthenticated user would have to guess names to discover arbitrary files for download, but if a user knows the file name/path value, they can access it without authenticating. **Recommendations** To resolve the issue, update to Nautobot version 1.6.7 or later for the 1.x branch. To resolve the issue, update to Nautobot version 2.0.6 or later for the 2.0.x branch. As a temporary workaround, consider restricting access to the `/files/get/?name=...` and `/files/download/?name=...` API endpoints until a patch is available. Restrict access to the `FileProxy` model instances to minimize the risk of exploitation.