CVE-2016-0772
MEDIUM6.5EPSS 7.6%python3.2 - security update
Published: 9/2/2016Modified: 4/28/2026
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."
Affected packages (4)
- Debian/python2.7from 0, < 2.7.12~rc1-1
- Debian/python2.7from 0, < 2.7.3-6+deb7u3
- Debian/python3.2from 0, < 3.2.3-7+deb7u1
- Debian/python3.4from 0, < 3.4.2-1+deb8u2
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | MEDIUM6.5 | CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:H/A:N |