UBUNTU-CVE-2016-0772

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Please try reporting it to the source first.
Source
https://ubuntu.com/security/CVE-2016-0772
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2016/UBUNTU-CVE-2016-0772.json
JSON Data
https://api.test.osv.dev/v1/vulns/UBUNTU-CVE-2016-0772
Upstream
Downstream
Related
Published
2016-09-02T00:00:00Z
Modified
2025-07-16T07:49:13.388471Z
Severity
  • 6.5 (Medium) CVSS_V3 - CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:H/A:N CVSS Calculator
  • Ubuntu - medium
Summary
[none]
Details

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

Affected packages

Ubuntu:14.04:LTS / python2.7

Package

Name
python2.7
Purl
pkg:deb/ubuntu/python2.7@2.7.6-8ubuntu0.3?arch=source&distro=trusty

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
2.7.6-8ubuntu0.3

Affected versions

2.*

2.7.5-8ubuntu3
2.7.5-8ubuntu4
2.7.6-2
2.7.6-2ubuntu1
2.7.6-3
2.7.6-3ubuntu1
2.7.6-4
2.7.6-4ubuntu1
2.7.6-5
2.7.6-7
2.7.6-8
2.7.6-8ubuntu0.2

Ecosystem specific 

{
    "availability": "No subscription required",
    "binaries": [
        {
            "binary_name": "idle-python2.7",
            "binary_version": "2.7.6-8ubuntu0.3"
        },
        {
            "binary_name": "libpython2.7",
            "binary_version": "2.7.6-8ubuntu0.3"
        },
        {
            "binary_name": "libpython2.7-dbg",
            "binary_version": "2.7.6-8ubuntu0.3"
        },
        {
            "binary_name": "libpython2.7-dbgsym",
            "binary_version": "2.7.6-8ubuntu0.3"
        },
        {
            "binary_name": "libpython2.7-dev",
            "binary_version": "2.7.6-8ubuntu0.3"
        },
        {
            "binary_name": "libpython2.7-dev-dbgsym",
            "binary_version": "2.7.6-8ubuntu0.3"
        },
        {
            "binary_name": "libpython2.7-minimal",
            "binary_version": "2.7.6-8ubuntu0.3"
        },
        {
            "binary_name": "libpython2.7-minimal-dbgsym",
            "binary_version": "2.7.6-8ubuntu0.3"
        },
        {
            "binary_name": "libpython2.7-stdlib",
            "binary_version": "2.7.6-8ubuntu0.3"
        },
        {
            "binary_name": "libpython2.7-stdlib-dbgsym",
            "binary_version": "2.7.6-8ubuntu0.3"
        },
        {
            "binary_name": "libpython2.7-testsuite",
            "binary_version": "2.7.6-8ubuntu0.3"
        },
        {
            "binary_name": "python2.7",
            "binary_version": "2.7.6-8ubuntu0.3"
        },
        {
            "binary_name": "python2.7-dbg",
            "binary_version": "2.7.6-8ubuntu0.3"
        },
        {
            "binary_name": "python2.7-dbgsym",
            "binary_version": "2.7.6-8ubuntu0.3"
        },
        {
            "binary_name": "python2.7-dev",
            "binary_version": "2.7.6-8ubuntu0.3"
        },
        {
            "binary_name": "python2.7-dev-dbgsym",
            "binary_version": "2.7.6-8ubuntu0.3"
        },
        {
            "binary_name": "python2.7-doc",
            "binary_version": "2.7.6-8ubuntu0.3"
        },
        {
            "binary_name": "python2.7-examples",
            "binary_version": "2.7.6-8ubuntu0.3"
        },
        {
            "binary_name": "python2.7-minimal",
            "binary_version": "2.7.6-8ubuntu0.3"
        },
        {
            "binary_name": "python2.7-minimal-dbgsym",
            "binary_version": "2.7.6-8ubuntu0.3"
        }
    ]
}

Ubuntu:14.04:LTS / python3.4

Package

Name
python3.4
Purl
pkg:deb/ubuntu/python3.4@3.4.3-1ubuntu1~14.04.5?arch=source&distro=trusty

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
3.4.3-1ubuntu1~14.04.5

Affected versions

3.*

3.4~b1-0ubuntu3
3.4~b1-4ubuntu4
3.4~b1-4ubuntu6
3.4~b1-5ubuntu2
3.4~b2-1
3.4~b3-1ubuntu1
3.4~rc1-1build1
3.4~rc2-1
3.4~rc3-0ubuntu1
3.4.0-1
3.4.0-2ubuntu1
3.4.0-2ubuntu1.1
3.4.3-1ubuntu1~14.04.1
3.4.3-1ubuntu1~14.04.3
3.4.3-1ubuntu1~14.04.4

Ecosystem specific 

{
    "availability": "No subscription required",
    "binaries": [
        {
            "binary_name": "idle-python3.4",
            "binary_version": "3.4.3-1ubuntu1~14.04.5"
        },
        {
            "binary_name": "libpython3.4",
            "binary_version": "3.4.3-1ubuntu1~14.04.5"
        },
        {
            "binary_name": "libpython3.4-dbg",
            "binary_version": "3.4.3-1ubuntu1~14.04.5"
        },
        {
            "binary_name": "libpython3.4-dbgsym",
            "binary_version": "3.4.3-1ubuntu1~14.04.5"
        },
        {
            "binary_name": "libpython3.4-dev",
            "binary_version": "3.4.3-1ubuntu1~14.04.5"
        },
        {
            "binary_name": "libpython3.4-dev-dbgsym",
            "binary_version": "3.4.3-1ubuntu1~14.04.5"
        },
        {
            "binary_name": "libpython3.4-minimal",
            "binary_version": "3.4.3-1ubuntu1~14.04.5"
        },
        {
            "binary_name": "libpython3.4-minimal-dbgsym",
            "binary_version": "3.4.3-1ubuntu1~14.04.5"
        },
        {
            "binary_name": "libpython3.4-stdlib",
            "binary_version": "3.4.3-1ubuntu1~14.04.5"
        },
        {
            "binary_name": "libpython3.4-stdlib-dbgsym",
            "binary_version": "3.4.3-1ubuntu1~14.04.5"
        },
        {
            "binary_name": "libpython3.4-testsuite",
            "binary_version": "3.4.3-1ubuntu1~14.04.5"
        },
        {
            "binary_name": "python3.4",
            "binary_version": "3.4.3-1ubuntu1~14.04.5"
        },
        {
            "binary_name": "python3.4-dbg",
            "binary_version": "3.4.3-1ubuntu1~14.04.5"
        },
        {
            "binary_name": "python3.4-dbgsym",
            "binary_version": "3.4.3-1ubuntu1~14.04.5"
        },
        {
            "binary_name": "python3.4-dev",
            "binary_version": "3.4.3-1ubuntu1~14.04.5"
        },
        {
            "binary_name": "python3.4-dev-dbgsym",
            "binary_version": "3.4.3-1ubuntu1~14.04.5"
        },
        {
            "binary_name": "python3.4-doc",
            "binary_version": "3.4.3-1ubuntu1~14.04.5"
        },
        {
            "binary_name": "python3.4-examples",
            "binary_version": "3.4.3-1ubuntu1~14.04.5"
        },
        {
            "binary_name": "python3.4-minimal",
            "binary_version": "3.4.3-1ubuntu1~14.04.5"
        },
        {
            "binary_name": "python3.4-minimal-dbgsym",
            "binary_version": "3.4.3-1ubuntu1~14.04.5"
        },
        {
            "binary_name": "python3.4-venv",
            "binary_version": "3.4.3-1ubuntu1~14.04.5"
        },
        {
            "binary_name": "python3.4-venv-dbgsym",
            "binary_version": "3.4.3-1ubuntu1~14.04.5"
        }
    ]
}

Ubuntu:14.04:LTS / python3.5

Package

Name
python3.5
Purl
pkg:deb/ubuntu/python3.5@3.5.2-2ubuntu0~16.04.4~14.04.1?arch=source&distro=trusty

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
3.5.2-2ubuntu0~16.04.4~14.04.1

Ecosystem specific 

{
    "availability": "No subscription required",
    "binaries": [
        {
            "binary_name": "idle-python3.5",
            "binary_version": "3.5.2-2ubuntu0~16.04.4~14.04.1"
        },
        {
            "binary_name": "libpython3.5",
            "binary_version": "3.5.2-2ubuntu0~16.04.4~14.04.1"
        },
        {
            "binary_name": "libpython3.5-dbg",
            "binary_version": "3.5.2-2ubuntu0~16.04.4~14.04.1"
        },
        {
            "binary_name": "libpython3.5-dbgsym",
            "binary_version": "3.5.2-2ubuntu0~16.04.4~14.04.1"
        },
        {
            "binary_name": "libpython3.5-dev",
            "binary_version": "3.5.2-2ubuntu0~16.04.4~14.04.1"
        },
        {
            "binary_name": "libpython3.5-dev-dbgsym",
            "binary_version": "3.5.2-2ubuntu0~16.04.4~14.04.1"
        },
        {
            "binary_name": "libpython3.5-minimal",
            "binary_version": "3.5.2-2ubuntu0~16.04.4~14.04.1"
        },
        {
            "binary_name": "libpython3.5-minimal-dbgsym",
            "binary_version": "3.5.2-2ubuntu0~16.04.4~14.04.1"
        },
        {
            "binary_name": "libpython3.5-stdlib",
            "binary_version": "3.5.2-2ubuntu0~16.04.4~14.04.1"
        },
        {
            "binary_name": "libpython3.5-stdlib-dbgsym",
            "binary_version": "3.5.2-2ubuntu0~16.04.4~14.04.1"
        },
        {
            "binary_name": "libpython3.5-testsuite",
            "binary_version": "3.5.2-2ubuntu0~16.04.4~14.04.1"
        },
        {
            "binary_name": "python3.5",
            "binary_version": "3.5.2-2ubuntu0~16.04.4~14.04.1"
        },
        {
            "binary_name": "python3.5-dbg",
            "binary_version": "3.5.2-2ubuntu0~16.04.4~14.04.1"
        },
        {
            "binary_name": "python3.5-dbgsym",
            "binary_version": "3.5.2-2ubuntu0~16.04.4~14.04.1"
        },
        {
            "binary_name": "python3.5-dev",
            "binary_version": "3.5.2-2ubuntu0~16.04.4~14.04.1"
        },
        {
            "binary_name": "python3.5-dev-dbgsym",
            "binary_version": "3.5.2-2ubuntu0~16.04.4~14.04.1"
        },
        {
            "binary_name": "python3.5-doc",
            "binary_version": "3.5.2-2ubuntu0~16.04.4~14.04.1"
        },
        {
            "binary_name": "python3.5-examples",
            "binary_version": "3.5.2-2ubuntu0~16.04.4~14.04.1"
        },
        {
            "binary_name": "python3.5-minimal",
            "binary_version": "3.5.2-2ubuntu0~16.04.4~14.04.1"
        },
        {
            "binary_name": "python3.5-minimal-dbgsym",
            "binary_version": "3.5.2-2ubuntu0~16.04.4~14.04.1"
        },
        {
            "binary_name": "python3.5-venv",
            "binary_version": "3.5.2-2ubuntu0~16.04.4~14.04.1"
        },
        {
            "binary_name": "python3.5-venv-dbgsym",
            "binary_version": "3.5.2-2ubuntu0~16.04.4~14.04.1"
        }
    ]
}

Ubuntu:16.04:LTS / python2.7

Package

Name
python2.7
Purl
pkg:deb/ubuntu/python2.7@2.7.12-1ubuntu0~16.04.1?arch=source&distro=xenial

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
2.7.12-1ubuntu0~16.04.1

Affected versions

2.*

2.7.10-4ubuntu1
2.7.10-4ubuntu2
2.7.11-2
2.7.11-3
2.7.11-4
2.7.11-6
2.7.11-7
2.7.11-7ubuntu1
2.7.12-1~16.04

Ecosystem specific 

{
    "availability": "No subscription required",
    "binaries": [
        {
            "binary_name": "idle-python2.7",
            "binary_version": "2.7.12-1ubuntu0~16.04.1"
        },
        {
            "binary_name": "libpython2.7",
            "binary_version": "2.7.12-1ubuntu0~16.04.1"
        },
        {
            "binary_name": "libpython2.7-dbg",
            "binary_version": "2.7.12-1ubuntu0~16.04.1"
        },
        {
            "binary_name": "libpython2.7-dbgsym",
            "binary_version": "2.7.12-1ubuntu0~16.04.1"
        },
        {
            "binary_name": "libpython2.7-dev",
            "binary_version": "2.7.12-1ubuntu0~16.04.1"
        },
        {
            "binary_name": "libpython2.7-dev-dbgsym",
            "binary_version": "2.7.12-1ubuntu0~16.04.1"
        },
        {
            "binary_name": "libpython2.7-minimal",
            "binary_version": "2.7.12-1ubuntu0~16.04.1"
        },
        {
            "binary_name": "libpython2.7-minimal-dbgsym",
            "binary_version": "2.7.12-1ubuntu0~16.04.1"
        },
        {
            "binary_name": "libpython2.7-stdlib",
            "binary_version": "2.7.12-1ubuntu0~16.04.1"
        },
        {
            "binary_name": "libpython2.7-stdlib-dbgsym",
            "binary_version": "2.7.12-1ubuntu0~16.04.1"
        },
        {
            "binary_name": "libpython2.7-testsuite",
            "binary_version": "2.7.12-1ubuntu0~16.04.1"
        },
        {
            "binary_name": "python2.7",
            "binary_version": "2.7.12-1ubuntu0~16.04.1"
        },
        {
            "binary_name": "python2.7-dbg",
            "binary_version": "2.7.12-1ubuntu0~16.04.1"
        },
        {
            "binary_name": "python2.7-dev",
            "binary_version": "2.7.12-1ubuntu0~16.04.1"
        },
        {
            "binary_name": "python2.7-doc",
            "binary_version": "2.7.12-1ubuntu0~16.04.1"
        },
        {
            "binary_name": "python2.7-examples",
            "binary_version": "2.7.12-1ubuntu0~16.04.1"
        },
        {
            "binary_name": "python2.7-minimal",
            "binary_version": "2.7.12-1ubuntu0~16.04.1"
        }
    ]
}

Ubuntu:16.04:LTS / python3.5

Package

Name
python3.5
Purl
pkg:deb/ubuntu/python3.5@3.5.2-2ubuntu0~16.04.1?arch=source&distro=xenial

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
3.5.2-2ubuntu0~16.04.1

Affected versions

3.*

3.5.0-3
3.5.0-3ubuntu1
3.5.1~rc1-2ubuntu1
3.5.1-1
3.5.1-2
3.5.1-3
3.5.1-5
3.5.1-6ubuntu1
3.5.1-6ubuntu2
3.5.1-9ubuntu1
3.5.1-10
3.5.2-2~16.01
3.5.2-2~16.04

Ecosystem specific 

{
    "availability": "No subscription required",
    "binaries": [
        {
            "binary_name": "idle-python3.5",
            "binary_version": "3.5.2-2ubuntu0~16.04.1"
        },
        {
            "binary_name": "libpython3.5",
            "binary_version": "3.5.2-2ubuntu0~16.04.1"
        },
        {
            "binary_name": "libpython3.5-dbg",
            "binary_version": "3.5.2-2ubuntu0~16.04.1"
        },
        {
            "binary_name": "libpython3.5-dbgsym",
            "binary_version": "3.5.2-2ubuntu0~16.04.1"
        },
        {
            "binary_name": "libpython3.5-dev",
            "binary_version": "3.5.2-2ubuntu0~16.04.1"
        },
        {
            "binary_name": "libpython3.5-dev-dbgsym",
            "binary_version": "3.5.2-2ubuntu0~16.04.1"
        },
        {
            "binary_name": "libpython3.5-minimal",
            "binary_version": "3.5.2-2ubuntu0~16.04.1"
        },
        {
            "binary_name": "libpython3.5-minimal-dbgsym",
            "binary_version": "3.5.2-2ubuntu0~16.04.1"
        },
        {
            "binary_name": "libpython3.5-stdlib",
            "binary_version": "3.5.2-2ubuntu0~16.04.1"
        },
        {
            "binary_name": "libpython3.5-stdlib-dbgsym",
            "binary_version": "3.5.2-2ubuntu0~16.04.1"
        },
        {
            "binary_name": "libpython3.5-testsuite",
            "binary_version": "3.5.2-2ubuntu0~16.04.1"
        },
        {
            "binary_name": "python3.5",
            "binary_version": "3.5.2-2ubuntu0~16.04.1"
        },
        {
            "binary_name": "python3.5-dbg",
            "binary_version": "3.5.2-2ubuntu0~16.04.1"
        },
        {
            "binary_name": "python3.5-dev",
            "binary_version": "3.5.2-2ubuntu0~16.04.1"
        },
        {
            "binary_name": "python3.5-doc",
            "binary_version": "3.5.2-2ubuntu0~16.04.1"
        },
        {
            "binary_name": "python3.5-examples",
            "binary_version": "3.5.2-2ubuntu0~16.04.1"
        },
        {
            "binary_name": "python3.5-minimal",
            "binary_version": "3.5.2-2ubuntu0~16.04.1"
        },
        {
            "binary_name": "python3.5-venv",
            "binary_version": "3.5.2-2ubuntu0~16.04.1"
        }
    ]
}