CVE-2016-0772
python3.2 - security update
6.5
MEDIUM
CVSS 3.1
EPSS 7.6%
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."
How to fix CVE-2016-0772
To remediate CVE-2016-0772, upgrade the affected package to a fixed version below.
- —upgrade to 2.7.12~rc1-1 or later
- —upgrade to 2.7.3-6+deb7u3 or later
- —upgrade to 3.2.3-7+deb7u1 or later
- —upgrade to 3.4.2-1+deb8u2 or later
Is CVE-2016-0772 being exploited?
Moderate — EPSS is 7.6%. Track this CVE but it's not at the top of the prioritisation list.
Affected packages (4)
- from 0, < 2.7.12~rc1-1
- from 0, < 2.7.3-6+deb7u3
- from 0, < 3.2.3-7+deb7u1
- from 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 |