Headline
GHSA-cq2g-pw6q-hf7j: Cortex's Alertmanager can expose local files content via specially crafted config
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. Only users of the Cortex Alertmanager service using -experimental.alertmanager.enable-api or enable_api: true are affected.
Patches
Affected Cortex users are advised to upgrade to v1.13.2 or v1.14.1.
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 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
- Email us at [email protected].
Cortex’s Alertmanager can expose local files content via specially crafted config
Moderate severity GitHub Reviewed Published Dec 19, 2022 in cortexproject/cortex • Updated Dec 19, 2022
Package
gomod github.com/cortexproject/cortex (Go)
Affected versions
>= 1.13.0, <= 1.13.1
= 1.14.0
Patched versions
1.13.2
1.14.1
Description
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. Only users of the Cortex Alertmanager service using -experimental.alertmanager.enable-api or enable_api: true are affected.
Patches
Affected Cortex users are advised to upgrade to v1.13.2 or v1.14.1.
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 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
- Email us at [email protected].
References
- GHSA-cq2g-pw6q-hf7j
- https://cortexmetrics.io/docs/api/#set-alertmanager-configuration
- https://github.com/cortexproject/cortex/releases/tag/v1.13.2
- https://github.com/cortexproject/cortex/releases/tag/v1.14.1
alanprot published the maintainer security advisory
Dec 19, 2022
Severity
Moderate
6.5
/ 10
CVSS base metrics
Attack vector
Network
Attack complexity
Low
Privileges required
Low
User interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
None
Availability
None
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
Weaknesses
CWE-73 CWE-184 CWE-641
CVE ID
CVE-2022-23536
GHSA ID
GHSA-cq2g-pw6q-hf7j
Source code
cortexproject/cortex
Credits
- aus
Checking history
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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.