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CVE-2021-3456

HighPublished

An improper authorization handling flaw was found in Foreman. The Salt plugin for the smart-proxy allows foreman clients to execute actions that should be...

Published: Mar 30, 2022
Updated: Aug 3, 2024
Assigning CNA: redhat
Evidence observed: Aug 8, 2026

Primary CVSS

7.1/ 10High

nvd · CVSS 3.1

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H

EPSS probability estimate

0.2%

Low · next 30 days

Percentile: 10.4%
Model date: Sep 21, 2026

EPSS is a statistical estimate, not a certainty or a measure of impact. Combine it with CVSS, KEV status, exposure and your environment.

Summary

An improper authorization handling flaw was found in Foreman. The Salt plugin for the smart-proxy allows foreman clients to execute actions that should be limited to the Foreman Server. This flaw allows an authenticated local attacker to access and delete limited resources and also causes a denial of service on the Foreman server. The highest threat from this vulnerability is to integrity and system availability.

Sources

CVE-2021-3456Exploit
A practical chain that starts with an innocuous PDF file and ends up in a reverse shell on an AWS EC2 instance

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