Protect yourself against future threats.
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AUSCERT External Security Bulletin Redistribution
ESB-2021.0308
ansible security update
28 January 2021
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AusCERT Security Bulletin Summary
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Product: ansible
Publisher: Debian
Operating System: Debian GNU/Linux
Impact/Access: Execute Arbitrary Code/Commands -- Remote with User Interaction
Access Confidential Data -- Existing Account
Resolution: Patch/Upgrade
CVE Names: CVE-2019-14904 CVE-2019-14846 CVE-2019-10156
CVE-2017-7481
Reference: ESB-2020.1595
ESB-2020.0257
ESB-2019.4200
ESB-2019.3948
Original Bulletin:
https://www.debian.org/lts/security/2021/dla-2535
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Debian LTS Advisory DLA-2535-1 debian-lts@lists.debian.org
https://www.debian.org/lts/security/ Markus Koschany
January 27, 2021 https://wiki.debian.org/LTS
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Package : ansible
Version : 2.2.1.0-2+deb9u2
CVE ID : CVE-2017-7481 CVE-2019-10156 CVE-2019-14846
CVE-2019-14904
Debian Bug : 862666 930065 942188
Several security vulnerabilities were discovered in ansible, a configuration
management, deployment, and task execution system.
CVE-2017-7481
Ansible fails to properly mark lookup-plugin results as unsafe. If an
attacker could control the results of lookup() calls, they could inject
Unicode strings to be parsed by the jinja2 templating system, resulting in
code execution. By default, the jinja2 templating language is now marked as
'unsafe' and is not evaluated.
CVE-2019-10156
A flaw was discovered in the way Ansible templating was implemented,
causing the possibility of information disclosure through unexpected
variable substitution. By taking advantage of unintended variable
substitution the content of any variable may be disclosed.
CVE-2019-14846
Ansible was logging at the DEBUG level which lead to a disclosure of
credentials if a plugin used a library that logged credentials at the DEBUG
level. This flaw does not affect Ansible modules, as those are executed in
a separate process.
CVE-2019-14904
A flaw was found in the solaris_zone module from the Ansible Community
modules. When setting the name for the zone on the Solaris host, the zone
name is checked by listing the process with the 'ps' bare command on the
remote machine. An attacker could take advantage of this flaw by crafting
the name of the zone and executing arbitrary commands in the remote host.
For Debian 9 stretch, these problems have been fixed in version
2.2.1.0-2+deb9u2.
We recommend that you upgrade your ansible packages.
For the detailed security status of ansible please refer to
its security tracker page at:
https://security-tracker.debian.org/tracker/ansible
Further information about Debian LTS security advisories, how to apply
these updates to your system and frequently asked questions can be
found at: https://wiki.debian.org/LTS
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