OS Command Injection in Ansible - CVE-2019-14904
Published: December 8, 2019 / Updated: January 24, 2020
Vulnerability identifier: #VU23449
CSH Severity: Medium
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2019-14904
CWE-ID: CWE-78
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: Red Hat Inc.
Affected software:
Ansible
Ansible
Detailed vulnerability description
The vulnerability allows a remote user to execute arbitrary shell commands on the target system.
The vulnerability exists due to improper input validation when processing zone names within the solaris_zone module. A remote uuser can provide a specially crafted zone name as a parameter to the os.system() call and execute arbitrary OS commands on the target system.
How to mitigate CVE-2019-14904
Install updates from vendor's website.
Sources
- https://bugzilla.redhat.com/show_bug.cgi?id=1776944
- https://github.com/ansible/ansible/blob/8c74df5e67fcae15d5d050ea1ffb4d6d1aa9070c/lib/ansible/modules/system/solaris_zone.py#L313
- https://access.redhat.com/errata/RHSA-2020:0218
- https://access.redhat.com/errata/RHSA-2020:0217
- https://access.redhat.com/errata/RHSA-2020:0216
- https://access.redhat.com/errata/RHSA-2020:0215