CVE-2020-1734: OS Command Injection
First published: Tue Feb 11 2020(Updated: )
A flaw was found in the pipe lookup plugin of ansible. Arbitrary commands can be run, when the pipe lookup plugin uses subprocess.Popen() with shell=True, by overwriting ansible facts and the variable is not escaped by quote plugin. An attacker could take advantage and run arbitrary commands by overwriting the ansible facts.
Credit: secalert@redhat.com secalert@redhat.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Redhat Ansible Engine | <=2.7.16 | |
| Redhat Ansible Engine | =2.8.8 | |
| Redhat Ansible Engine | =2.9.5 | |
| Redhat Ansible Tower | <=3.3.4 | |
| Redhat Ansible Tower | =3.4.5 | |
| Redhat Ansible Tower | =3.5.5 | |
| Redhat Ansible Tower | =3.6.3 |
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Reference Links
- https://nvd.nist.gov/vuln/detail/CVE-2020-1734
- https://github.com/ansible/ansible/issues/67792
- https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2020-1734
- https://access.redhat.com/errata/RHBA-2020:0547
- https://access.redhat.com/errata/RHBA-2020:1539
- https://access.redhat.com/security/cve/CVE-2020-1734
- https://bugzilla.redhat.com/show_bug.cgi?id=1801804
- https://github.com/ansible/ansible/issues/70159
- https://github.com/advisories/GHSA-h39q-95q5-9jfp (Advisory)
Frequently Asked Questions
What is CVE-2020-1734?
CVE-2020-1734 is a vulnerability in the pipe lookup plugin of Ansible that allows arbitrary commands to be run.
How does CVE-2020-1734 work?
CVE-2020-1734 works by overwriting Ansible facts and running arbitrary commands when the pipe lookup plugin uses subprocess.Popen() with shell=True and the variable is not escaped by the quote plugin.
What is the severity of CVE-2020-1734?
The severity of CVE-2020-1734 is high with a CVSS score of 7.4.
Which versions of Ansible are affected by CVE-2020-1734?
Versions up to and including Ansible 2.10 are affected by CVE-2020-1734.
How can I fix CVE-2020-1734?
To fix CVE-2020-1734, upgrade to a version of Ansible that is not affected by the vulnerability.
- collector/redhat-bugzilla
- alias/CVE-2020-1734
- collector/nvd-cve
- collector/nvd-index
- collector/github-advisory
- alias/GHSA-h39q-95q5-9jfp
- collector/github-advisory-latest
- agent/author
- agent/description
- agent/event
- agent/first-publish-date
- agent/last-modified-date
- agent/references
- agent/severity
- agent/softwarecombine
- agent/tags
- agent/type
- agent/weakness
- vendor/redhat
- canonical/redhat ansible engine
- version/redhat ansible engine/2.7.16
- version/redhat ansible engine/2.8.8
- version/redhat ansible engine/2.9.5
- canonical/redhat ansible tower
- version/redhat ansible tower/3.3.4
- version/redhat ansible tower/3.4.5
- version/redhat ansible tower/3.5.5
- version/redhat ansible tower/3.6.3
- package-manager/pip