Protection Mechanism Failure Affecting python package, versions <2.7.12-r0
Threat Intelligence
Snyk has a proof-of-concept or detailed explanation of how to exploit this vulnerability.
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-ALPINE34-PYTHON-468401
- published22 Sept 2019
- disclosed22 Sept 2019
- creditUnknown
Introduced: 22 Sep 2019
CVE-2016-0772 (opens in a new tab)How to fix?
Upgrade Alpine:3.4 python to version 2.7.12-r0 or higher.
NVD Description
Note: Versions mentioned in the description apply only to the upstream python package and not the python package as distributed by Alpine.
See How to fix? for Alpine:3.4 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
- https://docs.python.org/3.4/whatsnew/changelog.html#python-3-4-5
- https://docs.python.org/3.5/whatsnew/changelog.html#python-3-5-2
- https://hg.python.org/cpython/raw-file/v2.7.12/Misc/NEWS
- https://hg.python.org/cpython/rev/b3ce713fb9be
- https://hg.python.org/cpython/rev/d590114c2394
- http://www.splunk.com/view/SP-CAAAPSV
- http://www.splunk.com/view/SP-CAAAPUE
- https://lists.debian.org/debian-lts-announce/2019/02/msg00011.html
- https://security.gentoo.org/glsa/201701-18
- http://www.openwall.com/lists/oss-security/2016/06/14/9
- https://bugzilla.redhat.com/show_bug.cgi?id=1303647
- http://rhn.redhat.com/errata/RHSA-2016-1626.html
- http://rhn.redhat.com/errata/RHSA-2016-1627.html
- http://rhn.redhat.com/errata/RHSA-2016-1628.html
- http://rhn.redhat.com/errata/RHSA-2016-1629.html
- http://rhn.redhat.com/errata/RHSA-2016-1630.html
- http://www.securityfocus.com/bid/91225
- http://lists.opensuse.org/opensuse-security-announce/2020-01/msg00040.html
- https://www.exploit-db.com/exploits/43500