CVE-2022-23536: cortexproject cortex External Control of File Name or Path

Vulnerability summary

CVE-2022-23536 is a medium (CVSS 6.5) External Control of File Name or Path vulnerability in cortexproject cortex. EPSS estimates a 0.79% chance of exploitation in the next 30 days, higher than 55.3% of scored vulnerabilities.

Timeline

1. 19-12-2022
   PublishedVulnerability first disclosed.
2. 16-04-2025
   Last modifiedVulnerability information updated.

Description

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.

• CWE-73External Control of File Name or PathThe product allows user input to control or influence paths or file names that are used in filesystem operations.
• CWE-184Incomplete List of Disallowed InputsThe product implements a protection mechanism that relies on a list of inputs (or properties of inputs) that are not allowed by policy or otherwise require other action to neutralize before additional processing takes place, but the list is incomplete.
• CWE-641Improper Restriction of Names for Files and Other ResourcesThe product constructs the name of a file or other resource using input from an upstream component, but it does not restrict or incorrectly restricts the resulting name.