Protection Mechanism Failure Affecting python3.4 package, versions <3.4.2-1+deb8u2


Severity

Recommended
0.0
medium
0
10

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Threat Intelligence

Exploit Maturity
Mature
EPSS
1.19% (85th percentile)

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  • Snyk IDSNYK-DEBIAN8-PYTHON34-306414
  • published2 Sept 2016
  • disclosed2 Sept 2016

Introduced: 2 Sep 2016

CVE-2016-0772  (opens in a new tab)
CWE-693  (opens in a new tab)

How to fix?

Upgrade Debian:8 python3.4 to version 3.4.2-1+deb8u2 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream python3.4 package and not the python3.4 package as distributed by Debian. See How to fix? for Debian:8 relevant fixed versions and status.

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."