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Protection Mechanism Failure Affecting python-libs package, versions <0:2.7.5-38.el7_2

0.0
medium

Snyk CVSS

    Attack Complexity High

    Threat Intelligence

    Exploit Maturity Mature
    EPSS 1.63% (88th percentile)
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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-CENTOS7-PYTHONLIBS-2069390
  • published 26 Jul 2021
  • disclosed 11 Jun 2016
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Introduced: 11 Jun 2016

CVE-2016-0772 Open this link in a new tab
CWE-693 Open this link in a new tab

How to fix?

Upgrade Centos:7 python-libs to version 0:2.7.5-38.el7_2 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream python-libs package and not the python-libs package as distributed by Centos. See How to fix? for Centos:7 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."

References