CVE-2022-23536

Cortex provides multi-tenant, long term storage for Prometheus. A local file inclusion vulnerability exists in Cortex versions 1.13.0, 1.13.1 and 1.14.0, where a malicious actor could remotely read local files as a result of parsing maliciously crafted Alertmanager configurations when submitted to the Alertmanager Set Configuration API. Only users of the Alertmanager service where `-experimental.alertmanager.enable-api` or `enable_api: true` is configured are affected. Affected Cortex users are advised to upgrade to patched versions 1.13.2 or 1.14.1. However as a workaround, Cortex administrators may reject Alertmanager configurations containing the `api_key_file` setting in the `opsgenie_configs` section before sending to the Set Alertmanager Configuration API.

Cortex provides multi-tenant, long term storage for Prometheus. A local file inclusion vulnerability exists in Cortex versions 1.13.0, 1.13.1 and 1.14.0, where a malicious actor could remotely read local files as a result of parsing maliciously crafted Alertmanager configurations when submitted to the Alertmanager Set Configuration API. Only users of the Alertmanager service where `-experimental.alertmanager.enable-api` or `enable_api: true` is configured are affected. Affected Cortex users are advised to upgrade to patched versions 1.13.2 or 1.14.1. However as a workaround, Cortex administrators may reject Alertmanager configurations containing the `api_key_file` setting in the `opsgenie_configs` section before sending to the Set Alertmanager Configuration API.

A malicious actor could remotely read local files by submitting to the Alertmanager Set Configuration API maliciously crafted inputs. Only users of the Alertmanager service where "-experimental.alertmanager.enable-api" or "enable_api: true" is configured are affected.

### Impact A local file inclusion vulnerability exists in Cortex versions v1.13.0, v1.13.1 and v1.14.0, where a malicious actor could remotely read local files as a result of parsing maliciously crafted Alertmanager configurations when submitted to the [Alertmanager Set Configuration API](https://cortexmetrics.io/docs/api/#set-alertmanager-configuration). Only users of the Cortex Alertmanager service using `-experimental.alertmanager.enable-api` or `enable_api: true` are affected. ### Specific Go Packages Affected github.com/cortexproject/cortex/pkg/alertmanager ### Patches Affected Cortex users are advised to upgrade to versions 1.13.2 or 1.14.1. ### Workarounds Patching is ultimately advised. Using out-of-bound validation, Cortex administrators may reject Alertmanager configurations containing the `api_key_file` setting in the `opsgenie_configs` section and `opsgenie_api_key_file` in the `global` section before sending to the [Set Alertmanager Configuration API](https://cortexmetrics.io/docs/api/#set-alertmanager-configuration) as a workaround. ### References - Fixed Versions: - https://github.com/cortexproject/cortex/releases/tag/v1.14.1 - https://github.com/cortexproject/cortex/releases/tag/v1.13.2 - https://cortexmetrics.io/docs/api/#set-alertmanager-configuration ### For more information If you have any questions or comments about this advisory: * Open an issue in [cortex](https://github.com/cortexproject/cortex/issues/new/choose) * Email us at [cortex-team@googlegroups.com](mailto:cortex-team@googlegroups.com).

Cortex proporciona almacenamiento a largo plazo para múltiples inquilinos para Prometheus. Existe una vulnerabilidad de inclusión de archivos locales en las versiones 1.13.0, 1.13.1 y 1.14.0 de Cortex, donde un actor malintencionado podría leer de forma remota archivos locales como resultado del análisis de configuraciones de Alertmanager diseñadas con fines malintencionados cuando se envían a la API de configuración de Alertmanager. Solo se ven afectados los usuarios del servicio Alertmanager donde está configurado `-experimental.alertmanager.enable-api` o `enable_api: true`. Se recomienda a los usuarios afectados de Cortex que actualicen a las versiones parcheadas 1.13.2 o 1.14.1. Sin embargo, como workaround, los administradores de Cortex pueden rechazar las configuraciones de Alertmanager que contengan la configuración `api_key_file` en la sección `opsgenie_configs` antes de enviarlas a la API Set Alertmanager Configuration.