CVE-2020-10684: Code Injection
First published: Fri Mar 20 2020(Updated: )
A flaw was found in Ansible Engine, all versions 2.7.x, 2.8.x and 2.9.x prior to 2.7.17, 2.8.9 and 2.9.6 respectively, when using ansible_facts as a subkey of itself and promoting it to a variable when inject is enabled, overwriting the ansible_facts after the clean. An attacker could take advantage of this by altering the ansible_facts, such as ansible_hosts, users and any other key data which would lead into privilege escalation or code injection.
Credit: secalert@redhat.com secalert@redhat.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| pip/ansible | >=2.9.0<2.9.6 | 2.9.6 |
| pip/ansible | >=2.8.0<2.8.9 | 2.8.9 |
| pip/ansible | >=2.7.0<2.7.17 | 2.7.17 |
| redhat/ansible-engine | <2.7.17 | 2.7.17 |
| redhat/ansible-engine | <2.8.11 | 2.8.11 |
| redhat/ansible-engine | <2.9.7 | 2.9.7 |
| Redhat Ansible | >=2.7.0<2.7.17 | |
| Redhat Ansible | >=2.8.0<2.8.9 | |
| Redhat Ansible | >=2.9.0<2.9.6 | |
| Redhat Ansible Tower | <=3.3.5 | |
| Redhat Ansible Tower | >=3.5.0<=3.5.5 | |
| Redhat Ansible Tower | >=3.6.0<=3.6.3 | |
| Redhat Openstack | =10 | |
| Redhat Openstack | =13 | |
| Debian Debian Linux | =10.0 | |
| Fedoraproject Fedora | =30 | |
| Fedoraproject Fedora | =31 | |
| Fedoraproject Fedora | =32 | |
| debian/ansible | 2.7.7+dfsg-1+deb10u1 2.7.7+dfsg-1+deb10u2 2.10.7+merged+base+2.10.8+dfsg-1 7.3.0+dfsg-1 7.7.0+dfsg-3 |
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Reference Links
- https://nvd.nist.gov/vuln/detail/CVE-2020-10684
- https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2020-10684
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/DKPA4KC3OJSUFASUYMG66HKJE7ADNGFW/
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/MRRYUU5ZBLPBXCYG6CFP35D64NP2UB2S/
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/WQVOQD4VAIXXTVQAJKTN7NUGTJFE2PCB/
- https://security.gentoo.org/glsa/202006-11
- https://www.debian.org/security/2021/dsa-4950
- https://github.com/ansible/ansible/commit/a9d2ceafe429171c0e2ad007058b88bae57c74ce
- https://github.com/advisories/GHSA-p62g-jhg6-v3rq (Advisory)
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1816309
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1816311
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1816310
- https://github.com/ansible/ansible/pull/68431
- https://access.redhat.com/errata/RHSA-2020:1541
- https://access.redhat.com/errata/RHSA-2020:1542
- https://access.redhat.com/errata/RHSA-2020:1543
- https://access.redhat.com/errata/RHSA-2020:1544
- https://access.redhat.com/security/cve/cve-2020-10684
- https://bugzilla.redhat.com/show_bug.cgi?id=1815519
- https://security-tracker.debian.org/tracker/CVE-2020-10684
Frequently Asked Questions
What is CVE-2020-10684?
CVE-2020-10684 is a vulnerability in Ansible Engine that allows an attacker to overwrite ansible_facts after a clean.
What versions of Ansible Engine are affected by CVE-2020-10684?
Versions 2.7.x, 2.8.x, and 2.9.x of Ansible Engine prior to 2.7.17, 2.8.11, and 2.9.7 respectively are affected by CVE-2020-10684.
How can an attacker exploit CVE-2020-10684?
An attacker can exploit CVE-2020-10684 by using ansible_facts as a subkey of itself and promoting it to a variable when inject is enabled, overwriting the ansible_facts after the clean.
What is the severity of CVE-2020-10684?
CVE-2020-10684 has a severity rating of high.
How can I fix CVE-2020-10684?
To fix CVE-2020-10684, upgrade to Ansible Engine versions 2.7.17, 2.8.11, and 2.9.7 respectively.
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