CVE-2021-3533: Race Condition
First published: Wed Jun 09 2021(Updated: )
A flaw was found in Ansible if an ansible user sets ANSIBLE_ASYNC_DIR to a subdirectory of a world writable directory. When this occurs, there is a race condition on the managed machine. A malicious, non-privileged account on the remote machine can exploit the race condition to access the async result data. This flaw affects Ansible Tower 3.7 and Ansible Automation Platform 1.2.
Credit: secalert@redhat.com secalert@redhat.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Redhat Ansible Automation Platform | =1.2 | |
| Redhat Ansible Tower | =3.7.0 | |
| Redhat Ansible Engine | =2.0 | |
| Redhat Ansible Tower | =3.0 | |
| Redhat Enterprise Linux | =7.0 | |
| Fedoraproject Fedora | =34 | |
| Redhat Openstack-rdo |
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Reference Links
Frequently Asked Questions
What is CVE-2021-3533?
CVE-2021-3533 is a vulnerability found in Ansible that allows a malicious, non-privileged account to exploit a race condition and access the async results of the managed machine.
How does CVE-2021-3533 affect Ansible?
CVE-2021-3533 affects Ansible if an ansible user sets ANSIBLE_ASYNC_DIR to a subdirectory of a world writable directory, creating a race condition on the managed machine that can be exploited.
What is the severity of CVE-2021-3533?
CVE-2021-3533 has a severity rating of low (2.5).
Which software versions are affected by CVE-2021-3533?
Redhat Ansible Automation Platform 1.2, Redhat Ansible Tower 3.7.0, Redhat Ansible Engine 2.0, Redhat Ansible Tower 3.0, Redhat Enterprise Linux 7.0, Fedoraproject Fedora 34, and Redhat Openstack-rdo are affected by CVE-2021-3533.
How can the CVE-2021-3533 vulnerability be fixed?
To fix CVE-2021-3533, users should avoid setting ANSIBLE_ASYNC_DIR to a subdirectory of a world writable directory in Ansible.
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- canonical/redhat ansible engine
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