CVE-2018-16837
First published: Thu Oct 18 2018(Updated: )
"User" module leaks any data which is passed on as a parameter to ssh-keygen. This could lean in undesirable situations such as passphrases credentials passed as a parameter for the ssh-keygen executable. Showing those credentials in clear text form for every user which have access just to the process list.
Credit: secalert@redhat.com secalert@redhat.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Redhat Ansible Engine | =2.0 | |
| Redhat Ansible Engine | =2.5 | |
| Redhat Ansible Engine | =2.6 | |
| Redhat Ansible Engine | =2.7 | |
| Redhat Ansible Tower | =3.3.0 | |
| Debian Debian Linux | =8.0 | |
| Debian Debian Linux | =9.0 | |
| Suse Package Hub | ||
| SUSE Linux Enterprise | =12.0 | |
| redhat/ansible-engine | <2.7.1 | 2.7.1 |
| redhat/ansible-engine | <2.6.7 | 2.6.7 |
| redhat/ansible-engine | <2.5.11 | 2.5.11 |
| pip/ansible | >=0<2.5.11 | 2.5.11 |
| pip/ansible | >=2.6.0a1<2.6.7 | 2.6.7 |
| pip/ansible | >=2.7.0a1<2.7.1 | 2.7.1 |
| All of | ||
| Suse Package Hub | ||
| SUSE Linux Enterprise | =12.0 | |
| debian/ansible | 2.10.7+merged+base+2.10.17+dfsg-0+deb11u1 2.10.7+merged+base+2.10.17+dfsg-0+deb11u2 7.7.0+dfsg-3+deb12u1 11.1.0+dfsg-1 |
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Reference Links
- http://lists.opensuse.org/opensuse-security-announce/2019-04/msg00021.html
- http://lists.opensuse.org/opensuse-security-announce/2019-06/msg00077.html
- http://lists.opensuse.org/opensuse-security-announce/2019-08/msg00020.html
- http://www.securityfocus.com/bid/105700
- https://access.redhat.com/errata/RHSA-2018:3460
- https://access.redhat.com/errata/RHSA-2018:3461
- https://access.redhat.com/errata/RHSA-2018:3462
- https://access.redhat.com/errata/RHSA-2018:3463
- https://access.redhat.com/errata/RHSA-2018:3505
- https://access.redhat.com/security/cve/cve-2018-16837
- https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-16837
- https://lists.debian.org/debian-lts-announce/2018/11/msg00012.html
- https://usn.ubuntu.com/4072-1/
- https://www.debian.org/security/2019/dsa-4396
- https://launchpad.net/bugs/cve/CVE-2018-16837
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1640642#c4
- https://github.com/ansible/ansible/pull/47436
- https://github.com/ansible/ansible/pull/47487
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1640642#c7
- https://bugzilla.redhat.com/show_bug.cgi?id=1640642
- https://security-tracker.debian.org/tracker/CVE-2018-16837
- https://nvd.nist.gov/vuln/detail/CVE-2018-16837
- https://github.com/ansible/ansible/blob/c963ef1dfbf73efea5106624eb48b346f01eaefd/changelogs/CHANGELOG-v2.7.rst?plain=1#L138
- https://usn.ubuntu.com/4072-1
- https://github.com/ansible/ansible/pull/47486
- https://github.com/ansible/ansible/pull/47445
- https://github.com/ansible/ansible/commit/77928e6c3a2ad878b20312ce5d74d9d7741e0df0
- https://github.com/ansible/ansible/commit/b618339c321c387230d3ea523e80ad47af3de5cf
- https://github.com/ansible/ansible/commit/f50cc0b8cb399bb7b7c1ad23b94c9404f0cc6d23
- https://web.archive.org/web/20200227105539/http://www.securityfocus.com/bid/105700
- https://github.com/pypa/advisory-database/tree/main/vulns/ansible/PYSEC-2018-44.yaml
- https://github.com/advisories/GHSA-hwrm-63v2-42g4 (Advisory)
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-16837
- https://ubuntu.com/security/CVE-2018-16837
Frequently Asked Questions
What is CVE-2018-16837?
CVE-2018-16837 is a vulnerability in the Ansible "User" module that leaks any data passed as a parameter to ssh-keygen.
What is the severity level of CVE-2018-16837?
The severity level of CVE-2018-16837 is high.
Which software versions are affected by CVE-2018-16837?
The affected software versions include Ansible 2.5.1, 2.8.0, 2.0.0.2-2ubuntu1.3, 2.7.1, 2.6.7, and Redhat Ansible Engine 2.0, 2.5, 2.6, 2.7, and Redhat Ansible Tower 3.3.0.
How can I fix CVE-2018-16837?
To fix CVE-2018-16837, update Ansible to versions 2.7.7+dfsg-1+deb10u1, 2.10.7+merged+base+2.10.8+dfsg-1, 7.3.0+dfsg-1, or 7.7.0+dfsg-3.
Where can I find more information about CVE-2018-16837?
You can find more information about CVE-2018-16837 at the following references: [MITRE CVE](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-16837), [Red Hat Bugzilla](https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-16837), and [Ansible GitHub Pull Request](https://github.com/ansible/ansible/pull/47436).
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