CVE-2016-4972 Information

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.

CVSS Vector

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Reference

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

Attack Complexity

LOW

Privileges Required

NONE

User Interaction Required

NONE

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

HIGH

Availability Impact

HIGH

Base Score

HIGH

Base Severity

9.8