CVE-2021-4180

Name: CVE-2021-4180
Creator: NVD / NIST
Published: 2022-03-23T20:15:10.15+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 4.3/10EPSS 0.75%

Last modified Jun 17, 2026

CVE-2021-4180 is a medium-severity vulnerability rated 4.3/10 on the CVSS scale. An information exposure flaw in openstack-tripleo-heat-templates allows an external user to discover the internal IP or hostname. An attacker could exploit this by checking the www_authenticate_uri parameter (which is visible to all end users) in configuration files. EPSS estimates a 0.75% chance of exploitation in the next 30 days.

Description

An information exposure flaw in openstack-tripleo-heat-templates allows an external user to discover the internal IP or hostname. An attacker could exploit this by checking the www_authenticate_uri parameter (which is visible to all end users) in configuration files. This would give sensitive information which may aid in additional system exploitation. This flaw affects openstack-tripleo-heat-templates versions prior to 11.6.1.

Metrics

CVSS 3.1

4.3/10

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

EPSS Probability

0.75%

50.4th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Openstack	Tripleo Heat Templates	< 11.6.1
Redhat	Openstack	13
Redhat	Openstack	16.1
Redhat	Openstack	16.2

References

https://bugzilla.redhat.com/show_bug.cgi?id=2035793Issue Tracking, Patch, Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=2035793Issue Tracking, Patch, Third Party Advisory

Timeline

Published: Mar 23, 2022
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-4180?

How severe is CVE-2021-4180?

CVE-2021-4180 has a CVSS score of 4.3/10 (MEDIUM severity). The EPSS model estimates a 0.75% probability of exploitation in the next 30 days.

How do I fix CVE-2021-4180?

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-2021-4180?

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

Scan your code now

Source: NVD / NIST