Auth bypass in Theforeman Smart Proxy Shell Hooks

CVE-2021-3457

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.

Vulnerability class: Broken Access Control

EPSS: 0.002 (15.5th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 6.1 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:H.

Affected products

Weakness classification (CWE)

Public proof-of-concept exploits

References

Frequently asked questions

What is CVE-2021-3457?
CVE-2021-3457 is a medium-severity vulnerability in Theforeman Smart Proxy Shell Hooks, classified under Incorrect Authorization. CVSS score: 6.1/10. Published 2021-05-12.
How severe is CVE-2021-3457?
Medium severity. CVSS v3 base score is 6.1 out of 10.
Is CVE-2021-3457 known to be exploited?
1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.