CVE-2020-1738 Argument Injection in Ansible

What is CVE-2020-1738?

CVE-2020-1738 is a low-severity command injection vulnerability in Redhat Ansible Tower, published on 16 Mar 2020. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.

Official description

A flaw was found in Ansible Engine when the module package or service is used and the parameter 'use' is not specified. If a previous task is executed with a malicious user, the module sent can be selected by the attacker using the ansible facts file. All versions in 2.7.x, 2.8.x and 2.9.x branches are believed to be vulnerable.

Weakness: CWE-88

Which versions are affected by CVE-2020-1738?

7 open source packages ship an affected version, including ansible. It affects 4 products.

Products include Redhat Ansible, Redhat Ansible Tower, Redhat Cloudforms Management Engine, Redhat Openstack.

How do I fix CVE-2020-1738?

Upgrade ansible to a fixed version for your release line: 2.7.17, 2.8.9 or 2.9.6.

Upgrade, and pass arguments to programs as a list instead of through a shell. More about Command injection.

Is CVE-2020-1738 being exploited?

There is no known exploitation of CVE-2020-1738 in the wild and no public exploit code.

Other vulnerabilities in Redhat Ansible Tower

• CVE-2014-4657 Ansible Remote Code Execution Critical 9.8
• CVE-2014-4966 Ansible Arbitrary Code Execution Critical 9.8
• CVE-2014-4967 Ansible Arbitrary Code Execution Critical 9.8
• CVE-2017-7550 Ansible Insertion of Sensitive Information into Log File vulnerability Critical 9.8
• CVE-2014-3498 Ansible Arbitrary Code Execution High 8.8

All Redhat Ansible Tower vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as DEBIAN-CVE-2020-1738, GHSA-f85h-23mf-2fwh, PYSEC-2020-10, UBUNTU-CVE-2020-1738.