The create_script function in the lxc_container module in Ansible before 1.9.6-1 and 2.x before 2.0.2.0 allows local users to write to arbitrary files or gain privileges via a symlink attack on (1) /opt/.lxc-attach-script, (2) the archived container in the archive_path directory, or the (3) lxc-attach-script.log or (4) lxc-attach-script.err files in the temporary directory.

References

• https://nvd.nist.gov/vuln/detail/CVE-2016-3096
• GHSA-rh6x-qvg7-rrmj
• ansible/ansible-modules-extras#1941
• ansible/ansible-modules-extras@8c6fe64
• https://bugzilla.redhat.com/show_bug.cgi?id=1322925
• https://github.com/ansible/ansible/blob/v1.9.6-1/CHANGELOG.md#196-dancing-in-the-street---tbd
• https://github.com/ansible/ansible/blob/v2.0.2.0-1/CHANGELOG.md#202-over-the-hills-and-far-away
• https://groups.google.com/forum/#%21topic/ansible-announce/E80HLZilTU0
• https://groups.google.com/forum/#%21topic/ansible-announce/tqiZbcWxYig
• https://security.gentoo.org/glsa/201607-14
• http://lists.fedoraproject.org/pipermail/package-announce/2016-April/183103.html
• http://lists.fedoraproject.org/pipermail/package-announce/2016-April/183132.html
• http://lists.fedoraproject.org/pipermail/package-announce/2016-April/183252.html
• http://lists.fedoraproject.org/pipermail/package-announce/2016-April/183274.html
• http://lists.fedoraproject.org/pipermail/package-announce/2016-May/184175.html