The [Security Scanner Integration](../../../development/integrations/secure.md) documentation explains how to integrate other security scanners into GitLab.
| `DOCKER_USER` | Username for accessing a Docker registry requiring authentication. | `$CI_REGISTRY_USER` |
| `DOCKER_PASSWORD` | Password for accessing a Docker registry requiring authentication. | `$CI_REGISTRY_PASSWORD` |
| `CLAIR_OUTPUT` | Severity level threshold. Vulnerabilities with severity level higher than or equal to this threshold will be outputted. Supported levels are `Unknown`, `Negligible`, `Low`, `Medium`, `High`, `Critical` and `Defcon1`. | `Unknown` |
| `REGISTRY_INSECURE` | Allow [Klar](https://github.com/optiopay/klar) to access insecure registries (HTTP only). Should only be set to `true` when testing the image locally. | `"false"` |
| `DOCKER_INSECURE` | Allow [Klar](https://github.com/optiopay/klar) to access secure Docker registries using HTTPS with bad (or self-signed) SSL certificates. | `"false"` |
| `CLAIR_VULNERABILITIES_DB_URL` | (**DEPRECATED - use `CLAIR_DB_CONNECTION_STRING` instead**) This variable is explicitly set in the [services section](https://gitlab.com/gitlab-org/gitlab/-/blob/898c5da43504eba87b749625da50098d345b60d6/lib/gitlab/ci/templates/Security/Container-Scanning.gitlab-ci.yml#L23) of the `Container-Scanning.gitlab-ci.yml` file and defaults to `clair-vulnerabilities-db`. This value represents the address that the [PostgreSQL server hosting the vulnerabilities definitions](https://hub.docker.com/r/arminc/clair-db) is running on and **shouldn't be changed** unless you're running the image locally as described in the [Running the standalone Container Scanning Tool](#running-the-standalone-container-scanning-tool) section. | `clair-vulnerabilities-db` |
| `CLAIR_DB_CONNECTION_STRING` | This variable represents the [connection string](https://www.postgresql.org/docs/9.3/libpq-connect.html#AEN39692) to the [PostgreSQL server hosting the vulnerabilities definitions](https://hub.docker.com/r/arminc/clair-db) database and **shouldn't be changed** unless you're running the image locally as described in the [Running the standalone Container Scanning Tool](#running-the-standalone-container-scanning-tool) section. The host value for the connection string must match the [alias](https://gitlab.com/gitlab-org/gitlab/-/blob/898c5da43504eba87b749625da50098d345b60d6/lib/gitlab/ci/templates/Security/Container-Scanning.gitlab-ci.yml#L23) value of the `Container-Scanning.gitlab-ci.yml` template file, which defaults to `clair-vulnerabilities-db`. | `postgresql://postgres:password@clair-vulnerabilities-db:5432/postgres?sslmode=disable&statement_timeout=60000` |
| `CLAIR_DB_IMAGE` | The Docker image name and tag for the [PostgreSQL server hosting the vulnerabilities definitions](https://hub.docker.com/r/arminc/clair-db). It can be useful to override this value with a specific version, for example, to provide a consistent set of vulnerabilities for integration testing purposes, or to refer to a locally hosted vulnerabilities database for an on-premise offline installation. | `arminc/clair-db:latest` |
| `CLAIR_DB_IMAGE_TAG` | (**DEPRECATED - use `CLAIR_DB_IMAGE` instead**) The Docker image tag for the [PostgreSQL server hosting the vulnerabilities definitions](https://hub.docker.com/r/arminc/clair-db). It can be useful to override this value with a specific version, for example, to provide a consistent set of vulnerabilities for integration testing purposes. | `latest` |
| `DOCKERFILE_PATH` | The path to the `Dockerfile` to be used for generating remediations. By default, the scanner will look for a file named `Dockerfile` in the root directory of the project, so this variable should only be configured if your `Dockerfile` is in a non-standard location, such as a subdirectory. See [Solutions for vulnerabilities](#solutions-for-vulnerabilities-auto-remediation) for more details. | `Dockerfile` |
| `ADDITIONAL_CA_CERT_BUNDLE` | Bundle of CA certs that you want to trust. | "" |
### Running Container Scanning in an offline environment
For self-managed GitLab instances in an environment with limited, restricted, or intermittent access
to external resources through the internet, some adjustments are required for the Container Scanning job to
successfully run. For more information, see [Offline environments](../offline_deployments/index.md).
#### Requirements for offline Container Scanning
To use Container Scanning in an offline environment, you need:
- GitLab Runner with the [`docker` or `kubernetes` executor](#requirements).
- To configure a local Docker Container Registry with copies of the Container Scanning [analyzer](https://gitlab.com/gitlab-org/security-products/analyzers/klar) images, found in the [Container Scanning container registry](https://gitlab.com/gitlab-org/security-products/analyzers/klar/container_registry).
NOTE: **Note:**
GitLab Runner has a [default `pull policy` of `always`](https://docs.gitlab.com/runner/executors/docker.html#using-the-always-pull-policy),
meaning the runner may try to pull remote images even if a local copy is available. Set GitLab
Runner's [`pull_policy` to `if-not-present`](https://docs.gitlab.com/runner/executors/docker.html#using-the-if-not-present-pull-policy)
in an offline environment if you prefer using only locally available Docker images.
[`docker export`](https://docs.docker.com/engine/reference/commandline/export/), and [`docker import`](https://docs.docker.com/engine/reference/commandline/import/).
#### Set Container Scanning CI job variables to use local Container Scanner analyzers
Container Scanning can be executed on an offline GitLab Ultimate installation using the following process:
1. [Override the container scanning template](#overriding-the-container-scanning-template) in your `.gitlab-ci.yml` file to refer to the Docker images hosted on your local Docker container registry:
The above template will work for a GitLab Docker registry running on a local installation, however, if you're using a non-GitLab Docker registry, you'll need to change the `$CI_REGISTRY` value and the `docker login` credentials to match the details of your local registry.
docker run -p 5432:5432 -d --name clair-db arminc/clair-db:latest
```
1. Configure an environment variable to point to your local machine's IP address (or insert your IP address instead of the `LOCAL_MACHINE_IP_ADDRESS` variable in the `CLAIR_DB_CONNECTION_STRING` in the next step):
1. Run the analyzer's Docker image, passing the image and tag you want to analyze in the `CI_APPLICATION_REPOSITORY` and `CI_APPLICATION_TAG` environment variables:
"description": "Incorrect sanitation of the 302 redirect field in HTTP transport method of apt versions 1.4.8 and earlier can lead to content injection by a MITM attacker, potentially leading to remote code execution on the target machine.",
| `vulnerabilities[].category` | Where this vulnerability belongs (for example, SAST or Container Scanning). For Container Scanning, it will always be `container_scanning`. |
| `vulnerabilities[].cve` | (**DEPRECATED - use `vulnerabilities[].id` instead**) A fingerprint string value that represents a concrete occurrence of the vulnerability. It's used to determine whether two vulnerability occurrences are same or different. May not be 100% accurate. **This is NOT a [CVE](https://cve.mitre.org/)**. |
| `vulnerabilities[].severity` | How much the vulnerability impacts the software. Possible values: `Undefined` (an analyzer has not provided this information), `Info`, `Unknown`, `Low`, `Medium`, `High`, `Critical`. **Note:** Our current container scanning tool based on [klar](https://github.com/optiopay/klar) only provides the following levels: `Unknown`, `Low`, `Medium`, `High`, `Critical`. |
| `vulnerabilities[].confidence` | How reliable the vulnerability's assessment is. Possible values: `Undefined` (an analyzer has not provided this information), `Ignore`, `Unknown`, `Experimental`, `Low`, `Medium`, `High`, `Confirmed`. **Note:** Our current container scanning tool based on [klar](https://github.com/optiopay/klar) does not provide a confidence level, so this value is currently hardcoded to `Unknown`. |
| `vulnerabilities[].identifiers` | An ordered array of references that identify a vulnerability on internal or external DBs. |
| `vulnerabilities[].identifiers[].type` | Type of the identifier. Possible values: common identifier types (among `cve`, `cwe`, `osvdb`, and `usn`). |
| `vulnerabilities[].identifiers[].name` | Name of the identifier for display purpose. |
| `vulnerabilities[].identifiers[].value` | Value of the identifier for matching purpose. |
| `vulnerabilities[].identifiers[].url` | URL to identifier's documentation. Optional. |
| `vulnerabilities[].links` | An array of references to external documentation pieces or articles that describe the vulnerability further. Optional. |
| `vulnerabilities[].links[].name` | Name of the vulnerability details link. Optional. |
| `vulnerabilities[].links[].url` | URL of the vulnerability details document. Optional. |
| `remediations` | An array of objects containing information on cured vulnerabilities along with patch diffs to apply. Empty if no remediations provided by an underlying analyzer. |
| `remediations[].fixes` | An array of strings that represent references to vulnerabilities fixed by this particular remediation. |
| `remediations[].fixes[].id` | The id of a fixed vulnerability. |
| `remediations[].fixes[].cve` | (**DEPRECATED - use `remediations[].fixes[].id` instead**) A string value that describes a fixed vulnerability in the same format as `vulnerabilities[].cve`. |
