CVE-2016-4972

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.

Category

9.8
CVSS
Severity: Critical
CVSS 3.0 •
CVSS 2.0 •
EPSS 4.19% Top 15%
Vendor Advisory launchpad.net Vendor Advisory launchpad.net
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
https://bugs.launchpad.net/python-muranoclient/+bug/1586078 patch vendor advisory
http://www.openwall.com/lists/oss-security/2016/06/23/8 mailing list third party advisory patch
https://bugs.launchpad.net/murano/+bug/1586079 patch vendor advisory

Frequently Asked Questions

What is the severity of CVE-2016-4972?
CVE-2016-4972 has been scored as a critical severity vulnerability.
How to fix CVE-2016-4972?
To fix CVE-2016-4972, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2016-4972 being actively exploited in the wild?
It is possible that CVE-2016-4972 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~4% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
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