DEBIAN-CVE-2016-0772

Source
https://security-tracker.debian.org/tracker/CVE-2016-0772
Import Source
https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2016-0772.json
JSON Data
https://api.test.osv.dev/v1/vulns/DEBIAN-CVE-2016-0772
Upstream
Published
2016-09-02T14:59:00Z
Modified
2025-09-25T22:40:35Z
Severity
  • 6.5 (Medium) CVSS_V3 - CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:H/A:N CVSS Calculator
Summary
[none]
Details

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."

References

Affected packages

Debian:11 / python2.7

Package

Name
python2.7
Purl
pkg:deb/debian/python2.7?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
2.7.12~rc1-1

Ecosystem specific

{
    "urgency": "not yet assigned"
}