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."
History

No history.

cve-icon MITRE

Status: PUBLISHED

Assigner: redhat

Published: 2016-09-02T14:00:00

Updated: 2024-08-05T22:30:04.119Z

Reserved: 2015-12-16T00:00:00

Link: CVE-2016-0772

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Modified

Published: 2016-09-02T14:59:00.127

Modified: 2024-11-21T02:42:21.070

Link: CVE-2016-0772

cve-icon Redhat

Severity : Moderate

Publid Date: 2016-06-11T00:00:00Z

Links: CVE-2016-0772 - Bugzilla