Protection Mechanism Failure Affecting python2.7 package, versions <2.7.12~rc1-1


0.0
medium

Snyk CVSS

    Exploit Maturity Mature
    Attack Complexity High
    Integrity High
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NVD
6.5 medium
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SUSE
6.5 medium
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Red Hat
4.8 medium

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  • Snyk ID SNYK-DEBIAN9-PYTHON27-306437
  • published 2 Sep 2016
  • disclosed 2 Sep 2016

How to fix?

Upgrade Debian:9 python2.7 to version 2.7.12~rc1-1 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream python2.7 package and not the python2.7 package as distributed by Debian:9. See How to fix? for Debian:9 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."