Vulnerability Details : CVE-2016-4972
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.
Vulnerability category: Execute code
Products affected by CVE-2016-4972
- cpe:2.3:a:openstack:mitaka-murano:*:*:*:*:*:*:*:*
- cpe:2.3:a:openstack:murano-dashboard:*:*:*:*:*:*:*:*
- cpe:2.3:a:openstack:python-muranoclient:*:*:*:*:*:*:*:*
- cpe:2.3:a:openstack:murano:*:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2016-4972
4.19%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 88 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2016-4972
Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
---|---|---|---|---|---|---|
7.5
|
HIGH | AV:N/AC:L/Au:N/C:P/I:P/A:P |
10.0
|
6.4
|
NIST | |
9.8
|
CRITICAL | CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
3.9
|
5.9
|
NIST |
CWE ids for CVE-2016-4972
-
The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly.Assigned by: nvd@nist.gov (Primary)
References for CVE-2016-4972
-
https://bugs.launchpad.net/python-muranoclient/+bug/1586078
Bug #1586078 “YaqlYamlLoader inherits from YamlLoader " : Bugs : python-muranoclientPatch;Vendor Advisory
-
http://www.openwall.com/lists/oss-security/2016/06/23/8
oss-security - RCE vulnerability in Openstack Murano using insecure YAML tags (CVE-2016-4972)Patch;Third Party Advisory
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https://bugs.launchpad.net/murano/+bug/1586079
Bug #1586079 “YaqlYamlLoader inherits from YamlLoader” : Bugs : MuranoPatch;Vendor Advisory
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