CVE-2016-0772

The smtplib library in CPython (aka Python) before 2.7.12, 3.x before 3.4.5, and 3.5.x before 3.5.2 does not return an error when StartTLS fails, which might allow man-in-the-middle attackers to bypass the TLS protections by leveraging a network position between the client and the registry to block the StartTLS command, aka a "StartTLS stripping attack."

• python python 3.5.0 • python python 3.5.1 • python python 3.0 • python python 3.0.1 • python python 3.1.0 • python python 3.1.1 • python python 3.1.2 • python python 3.1.3 • python python 3.1.4 • python python 3.1.5 • python python 3.2.0 • python python 3.2.1 • python python 3.2.2 • python python 3.2.3 • python python 3.2.4 • python python 3.2.5 • python python 3.2.6 • python python 3.3.0 • python python 3.3.1 • python python 3.3.2 • python python 3.3.3 • python python 3.3.4 • python python 3.3.5 • python python 3.3.6 • python python 3.4.0 • python python 3.4.1 • python python 3.4.2 • python python 3.4.3 • python python 3.4.4 • python python (<= 2.7.11)