Description
The HTTP clients in the (1) httplib, (2) urllib, (3) urllib2, and (4) xmlrpclib libraries in CPython (aka Python) 2.x before 2.7.9 and 3.x before 3.4.3, when accessing an HTTPS URL, do not (a) check the certificate against a trust store or verify that the server hostname matches a domain name in the subject's (b) Common Name or (c) subjectAltName field of the X.509 certificate, which allows man-in-the-middle attackers to spoof SSL servers via an arbitrary valid certificate.
Remediation
References
Related Vulnerabilities
WordPress Plugin Yasr-Yet Another Stars Rating Unspecified Vulnerability (1.3.2)
Squid Uncontrolled Resource Consumption Vulnerability (CVE-2021-46784)
Moodle Permissions, Privileges, and Access Controls Vulnerability (CVE-2014-0127)
WordPress Plugin iThemes Security (formerly Better WP Security) Unspecified Vulnerability (6.9.0)