CVE-2021-3457

Name: CVE-2021-3457
Creator: NVD / NIST
Published: 2021-05-12T15:15:07.78+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 6.1/10EPSS 0.24%

Last modified Jun 17, 2026

CVE-2021-3457 is a medium-severity vulnerability rated 6.1/10 on the CVSS scale. An improper authorization handling flaw was found in Foreman. The Shellhooks plugin for the smart-proxy allows Foreman clients to execute actions that should be limited to the Foreman Server. EPSS estimates a 0.24% chance of exploitation in the next 30 days.

Description

An improper authorization handling flaw was found in Foreman. The Shellhooks 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.

Metrics

CVSS 3.1

6.1/10

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

EPSS Probability

0.24%

15.2th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-863

Affected Software

Vendor	Product	Versions
Theforeman	Smart Proxy Shell Hooks	< 0.9.2

References

https://bugzilla.redhat.com/show_bug.cgi?id=1940990Issue Tracking, Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=1940990Issue Tracking, Third Party Advisory

Timeline

Published: May 12, 2021
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-3457?

How severe is CVE-2021-3457?

CVE-2021-3457 has a CVSS score of 6.1/10 (MEDIUM severity). The EPSS model estimates a 0.24% probability of exploitation in the next 30 days.

How do I fix CVE-2021-3457?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2021-3457?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST