Ansible before 1.9.2 does not verify that the server hostname matches a domain name in the subject's Common Name (CN) or subjectAltName field of the X.509 certificate, which allows man-in-the-middle attackers to spoof SSL servers via an arbitrary valid certificate.
https://lists.debian.org/debian-lts-announce/2019/09/msg00016.html
http://www.openwall.com/lists/oss-security/2015/07/14/4
http://www.ansible.com/security
http://lists.opensuse.org/opensuse-updates/2015-08/msg00029.html
http://lists.opensuse.org/opensuse-updates/2015-07/msg00051.html
Published: 2015-08-12
Updated: 2025-04-12
Base Score: 4.3
Vector: CVSS2#AV:N/AC:M/Au:N/C:N/I:P/A:N
Severity: Medium
Base Score: 7.5
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
Severity: High
Base Score: 8.7
Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N
Severity: High