Local File Disclosure Vulnerability in Cortex Alertmanager
CVE-2021-31232

5.5MEDIUM

Key Information:

Vendor

Linux
Status
Cortex
Vendor
CVE Published:
30 April 2021

What is CVE-2021-31232?

The Alertmanager component of CNCF Cortex prior to version 1.8.1 suffers from a local file disclosure vulnerability when the -experimental.alertmanager.enable-api option is enabled. This flaw can be exploited through the HTTP basic authentication mechanism, wherein attackers can leverage the password_file to access any arbitrary file through a webhook. Additionally, alertmanager templates may also serve as an attack vector allowing the loading and exposure of any text file listed in the templates, thereby escalating the risk of unauthorized file access.

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References

https://community.grafana.com/c/security-announcements
x_refsource_MISC
https://github.com/cortexproject/cortex
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https://github.com/cortexproject/cortex/pull/4129/files
x_refsource_MISC

CVSS V3.1

Score:
5.5
Severity:
MEDIUM
Confidentiality:
High
Integrity:
None
Availability:
High
Attack Vector:
Local
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

JSON
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