cve/2016/CVE-2016-0772.md

CVE-2016-0772

Description

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."

POC

Reference

No PoCs from references.

Github

• https://github.com/ARPSyndicate/cvemon
• https://github.com/RClueX/Hackerone-Reports
• https://github.com/imhunterand/hackerone-publicy-disclosed
• https://github.com/tintinweb/striptls