CVE-2016-4972

Name: CVE-2016-4972
Creator: NVD / NIST
Published: 2016-09-26T16:59:01.21+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

UnknownEPSS 3.17%

Last modified Jun 17, 2026

CVE-2016-4972 is a vulnerability of currently unknown severity. OpenStack Murano before 1.0.3 (liberty) and 2.x before 2.0.1 (mitaka), Murano-dashboard before 1.0.3 (liberty) and 2.x before 2.0.1 (mitaka), and python-muranoclient before 0.7.3 (liberty) and 0.8.x before 0.8.5 (mitaka) improperly use loaders inherited from yaml.Loader when parsing MuranoPL and UI files, which allows remote attackers to create arbitrary Python objects and execute arbitrary code via crafted extended YAML tags in UI definitions in packages.. EPSS estimates a 3.17% chance of exploitation in the next 30 days.

Description

OpenStack Murano before 1.0.3 (liberty) and 2.x before 2.0.1 (mitaka), Murano-dashboard before 1.0.3 (liberty) and 2.x before 2.0.1 (mitaka), and python-muranoclient before 0.7.3 (liberty) and 0.8.x before 0.8.5 (mitaka) improperly use loaders inherited from yaml.Loader when parsing MuranoPL and UI files, which allows remote attackers to create arbitrary Python objects and execute arbitrary code via crafted extended YAML tags in UI definitions in packages.

Metrics

EPSS Probability

3.17%

86.4th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-20

Affected Software

Vendor	Product	Versions
Openstack	Mitaka-Murano	<= 2.0.0
Openstack	Murano	<= 1.0.2
Openstack	Murano-Dashboard	<= 1.0.2
Openstack	Python-Muranoclient	<= 0.7.2

References

http://www.openwall.com/lists/oss-security/2016/06/23/8Patch, Third Party Advisory
https://bugs.launchpad.net/murano/+bug/1586079Patch, Vendor Advisory
https://bugs.launchpad.net/python-muranoclient/+bug/1586078Patch, Vendor Advisory
http://www.openwall.com/lists/oss-security/2016/06/23/8Patch, Third Party Advisory
https://bugs.launchpad.net/murano/+bug/1586079Patch, Vendor Advisory
https://bugs.launchpad.net/python-muranoclient/+bug/1586078Patch, Vendor Advisory

Timeline

Published: Sep 26, 2016
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2016-4972?

How severe is CVE-2016-4972?

Severity scoring for CVE-2016-4972 is pending analysis. The EPSS model estimates a 3.17% probability of exploitation in the next 30 days.

How do I fix CVE-2016-4972?

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-2016-4972?

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

Scan your code now

Source: NVD / NIST