NVD - CVE-2016-0772

CVE-2016-0772 Detail

Modified

This vulnerability has been modified since it was last analyzed by the NVD. It is awaiting reanalysis which may result in further changes to the information provided.

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."

Source: MITRE
Description Last Modified: 09/02/2016

Impact

CVSS v3.0 Severity and Metrics:

Base Score: 6.5 MEDIUM
Vector: AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:H/A:N (V3 legend)
Impact Score: 4.2
Exploitability Score: 2.2

Attack Vector (AV): Network
Attack Complexity (AC): High
Privileges Required (PR): None
User Interaction (UI): None
Scope (S): Unchanged
Confidentiality (C): Low
Integrity (I): High
Availability (A): None

CVSS v2.0 Severity and Metrics:

Base Score: 5.8 MEDIUM
Vector: (AV:N/AC:M/Au:N/C:P/I:P/A:N) (V2 legend)
Impact Subscore: 4.9
Exploitability Subscore: 8.6

Access Vector (AV): Network
Access Complexity (AC): Medium
Authentication (AU): None
Confidentiality (C): Partial
Integrity (I): Partial
Availability (A): None
Additional Information:
Allows unauthorized disclosure of information
Allows unauthorized modification

References to Advisories, Solutions, and Tools

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Hyperlink	Resource
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.openwall.com/lists/oss-security/2016/06/14/9	Mailing List
http://www.securityfocus.com/bid/91225
http://www.splunk.com/view/SP-CAAAPSV
http://www.splunk.com/view/SP-CAAAPUE
https://bugzilla.redhat.com/show_bug.cgi?id=1303647	Issue Tracking Third Party Advisory
https://docs.python.org/3.4/whatsnew/changelog.html#python-3-4-5	Release Notes
https://docs.python.org/3.5/whatsnew/changelog.html#python-3-5-2	Release Notes
https://hg.python.org/cpython/raw-file/v2.7.12/Misc/NEWS	Release Notes
https://hg.python.org/cpython/rev/b3ce713fb9be	Patch
https://hg.python.org/cpython/rev/d590114c2394	Patch
https://security.gentoo.org/glsa/201701-18

Technical Details

Vulnerability Type (View All)

Protection Mechanism Failure (CWE-693)

Vulnerable software and versions Switch to CPE 2.2

Denotes Vulnerable Software
Are we missing a CPE here? Please let us know.

Change History

7 change records found - show changes

CVE Modified by MITRE - 1/4/2018 9:30:30 PM

Action	Type	New Value
Added	Reference	http://rhn.redhat.com/errata/RHSA-2016-1626.html [No Types Assigned]
Added	Reference	http://rhn.redhat.com/errata/RHSA-2016-1627.html [No Types Assigned]
Added	Reference	http://rhn.redhat.com/errata/RHSA-2016-1628.html [No Types Assigned]
Added	Reference	http://rhn.redhat.com/errata/RHSA-2016-1629.html [No Types Assigned]
Added	Reference	http://rhn.redhat.com/errata/RHSA-2016-1630.html [No Types Assigned]

Modified Analysis - 9/2/2016 4:42:30 PM

Action	Type	Old Value	New Value
Added	CPE Configuration		Record truncated, showing 500 of 1735 characters. View Entire Change Record Configuration 1 OR cpe:2.3:a:python:python:3.5.1::::::: cpe:2.3:a:python:python:3.5.0::::::: Configuration 2 OR cpe:2.3:a:python:python:3.0::::::: cpe:2.3:a:python:python:3.0.1::::::: cpe:2.3:a:python:python:3.1.0::::::: cpe:2.3:a:python:python:3.1.1::::::: cpe:2.3:a:python:python:3.1.2::::::: cpe:2.3:a:python:python:3.1.3::::::: *cpe
Added	CVSS V2		(AV:N/AC:M/Au:N/C:P/I:P/A:N)
Added	CVSS V3		AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:H/A:N
Added	CWE		CWE-693
Changed	Reference Type	http://www.openwall.com/lists/oss-security/2016/06/14/9 No Types Assigned	http://www.openwall.com/lists/oss-security/2016/06/14/9 Mailing List
Changed	Reference Type	https://bugzilla.redhat.com/show_bug.cgi?id=1303647 No Types Assigned	https://bugzilla.redhat.com/show_bug.cgi?id=1303647 Third Party Advisory, Issue Tracking
Changed	Reference Type	https://docs.python.org/3.4/whatsnew/changelog.html#python-3-4-5 No Types Assigned	https://docs.python.org/3.4/whatsnew/changelog.html#python-3-4-5 Release Notes
Changed	Reference Type	https://docs.python.org/3.5/whatsnew/changelog.html#python-3-5-2 No Types Assigned	https://docs.python.org/3.5/whatsnew/changelog.html#python-3-5-2 Release Notes
Changed	Reference Type	https://hg.python.org/cpython/raw-file/v2.7.12/Misc/NEWS No Types Assigned	https://hg.python.org/cpython/raw-file/v2.7.12/Misc/NEWS Release Notes
Changed	Reference Type	https://hg.python.org/cpython/rev/b3ce713fb9be No Types Assigned	https://hg.python.org/cpython/rev/b3ce713fb9be Patch
Changed	Reference Type	https://hg.python.org/cpython/rev/d590114c2394 No Types Assigned	https://hg.python.org/cpython/rev/d590114c2394 Patch

Quick Info

CVE Dictionary Entry:
CVE-2016-0772
NVD Published Date:
09/02/2016
NVD Last Modified:
01/04/2018

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Information Technology Laboratory

National Vulnerability Database

National Vulnerability Database

National Vulnerability
Database

CVE-2016-0772 Detail

Description

Impact

References to Advisories, Solutions, and Tools

Technical Details

Vulnerable software and versions Switch to CPE 2.2

Change History

CVE Modified by MITRE - 1/4/2018 9:30:30 PM

CVE Modified by MITRE - 6/30/2017 9:29:31 PM

CVE Modified by MITRE - 12/23/2016 9:59:36 PM

CVE Modified by MITRE - 11/28/2016 2:55:19 PM

CVE Translated - 9/2/2016 6:45:01 PM

Modified Analysis - 9/2/2016 4:42:30 PM

Initial CVE Analysis - 9/2/2016 2:52:00 PM

Quick Info