Bug 1955751 (CVE-2021-31232) - CVE-2021-31232 cortex: Alertmanager can expose local files content via specially crafted config
Summary: CVE-2021-31232 cortex: Alertmanager can expose local files content via specia...
Keywords:
Status: NEW
Alias: CVE-2021-31232
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
low
low
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact:
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Depends On:
Blocks: 1955753
TreeView+ depends on / blocked
 
Reported: 2021-04-30 18:08 UTC by Pedro Sampaio
Modified: 2021-04-30 18:10 UTC (History)
6 users (show)

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Description Pedro Sampaio 2021-04-30 18:08:34 UTC
The Alertmanager in CNCF Cortex before 1.8.1 has a local file disclosure vulnerability when -experimental.alertmanager.enable-api is used. The HTTP basic auth password_file can be used as an attack vector to send any file content via a webhook. The alertmanager templates can be used as an attack vector to send any file content because the alertmanager can load any text file specified in the templates list.

References:

https://community.grafana.com/c/security-announcements
https://github.com/cortexproject/cortex
https://github.com/cortexproject/cortex/pull/4129/files
https://lists.cncf.io/g/cortex-users/message/50


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