CVE-2022-23536

moderate-risk

Published 2022-12-19

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.

Do I need to act?

0.58% chance of exploitation

EPSS score — low exploit probability

Not on CISA KEV list

No confirmed active exploitation reported to CISA

Patch status unknown

Check vendor advisories for fix availability and mitigation guidance

CVSS 6.5/10 Medium

NETWORK / LOW complexity

Affected Products (3)

Cortex

Affected Vendors

Linuxfoundation

References (8)

Vendor Advisory https://cortexmetrics.io/docs/api/#set-alertmanager-configuration

Release Notes https://github.com/cortexproject/cortex/releases/tag/v1.13.2

Release Notes https://github.com/cortexproject/cortex/releases/tag/v1.14.1

Third Party Advisory https://github.com/cortexproject/cortex/security/advisories/GHSA-cq2g-pw6q-hf7j

Vendor Advisory https://cortexmetrics.io/docs/api/#set-alertmanager-configuration

Release Notes https://github.com/cortexproject/cortex/releases/tag/v1.13.2

Release Notes https://github.com/cortexproject/cortex/releases/tag/v1.14.1

Third Party Advisory https://github.com/cortexproject/cortex/security/advisories/GHSA-cq2g-pw6q-hf7j

/ 100

moderate-risk

Severity 24/34 · High

Exploitability 2/34 · Minimal

Exposure 9/34 · Low