Home > Vulnerability Database > CVE-2016-0772

Mend.io Vulnerability Database

CVE-2016-0772

Date: September 2, 2016

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."

Language: Python

Severity Score

6.5

Related Resources (23)

Url: http://rhn.redhat.com/errata/RHSA-2016-1629.html

Url: http://rhn.redhat.com/errata/RHSA-2016-1630.html

Url: https://lists.debian.org/debian-lts-announce/2019/02/msg00011.html

Url: http://rhn.redhat.com/errata/RHSA-2016-1626.html

Url: http://www.splunk.com/view/SP-CAAAPSV

Url: https://nvd.nist.gov/vuln/detail/CVE-2016-0772

Url: https://hg.python.org/cpython/rev/b3ce713fb9be

Url: http://www.securityfocus.com/bid/91225

Url: http://rhn.redhat.com/errata/RHSA-2016-1628.html

Url: https://security-tracker.debian.org/tracker/CVE-2016-0772

Url: https://bugzilla.redhat.com/show_bug.cgi?id=1303647

Url: https://security.gentoo.org/glsa/201701-18

Url: http://lists.opensuse.org/opensuse-security-announce/2020-01/msg00040.html

Url: http://www.splunk.com/view/SP-CAAAPUE

Url: https://hg.python.org/cpython/rev/d590114c2394

Url: https://docs.python.org/3.4/whatsnew/changelog.html#python-3-4-5

Url: https://access.redhat.com/security/cve/CVE-2016-0772

Url: http://rhn.redhat.com/errata/RHSA-2016-1627.html

Url: https://docs.python.org/3.5/whatsnew/changelog.html#python-3-5-2

Url: https://people.canonical.com/~ubuntu-security/cve/CVE-2016-0772

Url: http://www.openwall.com/lists/oss-security/2016/06/14/9

Url: https://hg.python.org/cpython/raw-file/v2.7.12/Misc/NEWS

Url: https://www.mend.io/vulnerability-database/CVE-2016-0772

Severity Score

6.5

Weakness Type (CWE)

Protection Mechanism Failure

CWE-693

CVSS v3.1

Base Score:	6.5
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

Base Score:	5.8
Access Vector (AV):	NETWORK
Access Complexity (AC):	MEDIUM
Authentication (AU):	NONE
Confidentiality (C):	PARTIAL
Integrity (I):	PARTIAL
Availability (A):	NONE
Additional information:

Mend.io Vulnerability Database

We found results for “”

CVE-2016-0772

Date: September 2, 2016

Language: Python

Severity Score

Related Resources (23)

Severity Score

Weakness Type (CWE)

CVSS v3.1

CVSS v2

Do you need more information?