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Ubuntu Security Notice USN-3134-1

Ubuntu Security Notice USN-3134-1
Posted Nov 22, 2016
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 3134-1 - It was discovered that the smtplib library in Python did not return an error when StartTLS fails. A remote attacker could possibly use this to expose sensitive information. Various other issues were also addressed.

tags | advisory, remote, web, cgi, python
systems | linux, ubuntu
advisories | CVE-2016-0772, CVE-2016-1000110, CVE-2016-5636, CVE-2016-5699
SHA-256 | f4acba05d29f61abc115563263a86c66eefab809d6312eba26bddf0ab4433cc7

Ubuntu Security Notice USN-3134-1

Change Mirror Download

Ubuntu Security Notice USN-3134-1
November 22, 2016

python2.7, python3.2, python3.4, python3.5 vulnerabilities

A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 16.04 LTS
- Ubuntu 14.04 LTS
- Ubuntu 12.04 LTS


Several security issues were fixed in Python.

Software Description:
- python2.7: An interactive high-level object-oriented language
- python3.5: An interactive high-level object-oriented language
- python3.4: An interactive high-level object-oriented language
- python3.2: An interactive high-level object-oriented language


It was discovered that the smtplib library in Python did not return an
error when StartTLS fails. A remote attacker could possibly use this to
expose sensitive information. (CVE-2016-0772)

R=E9mi Rampin discovered that Python would not protect CGI applications
=66rom contents of the HTTP_PROXY environment variable when based on
the contents of the Proxy header from HTTP requests. A remote attacker
could possibly use this to cause a CGI application to redirect outgoing
HTTP requests. (CVE-2016-1000110)

Insu Yun discovered an integer overflow in the zipimporter module in
Python that could lead to a heap-based overflow. An attacker could
use this to craft a special zip file that when read by Python could
possibly execute arbitrary code. (CVE-2016-5636)

Guido Vranken discovered that the urllib modules in Python did
not properly handle carriage return line feed (CRLF) in headers. A
remote attacker could use this to craft URLs that inject arbitrary
HTTP headers. This issue only affected Ubuntu 12.04 LTS and Ubuntu
14.04 LTS. (CVE-2016-5699)

Update instructions:

The problem can be corrected by updating your system to the following
package versions:

Ubuntu 16.04 LTS:
libpython2.7 2.7.12-1ubuntu0~16.04.1
libpython2.7-minimal 2.7.12-1ubuntu0~16.04.1
libpython2.7-stdlib 2.7.12-1ubuntu0~16.04.1
libpython3.5 3.5.2-2ubuntu0~16.04.1
libpython3.5-minimal 3.5.2-2ubuntu0~16.04.1
libpython3.5-stdlib 3.5.2-2ubuntu0~16.04.1
python2.7 2.7.12-1ubuntu0~16.04.1
python2.7-minimal 2.7.12-1ubuntu0~16.04.1
python3.5 3.5.2-2ubuntu0~16.04.1
python3.5-minimal 3.5.2-2ubuntu0~16.04.1

Ubuntu 14.04 LTS:
libpython2.7 2.7.6-8ubuntu0.3
libpython2.7-minimal 2.7.6-8ubuntu0.3
libpython2.7-stdlib 2.7.6-8ubuntu0.3
libpython3.4 3.4.3-1ubuntu1~14.04.5
libpython3.4-minimal 3.4.3-1ubuntu1~14.04.5
libpython3.4-stdlib 3.4.3-1ubuntu1~14.04.5
python2.7 2.7.6-8ubuntu0.3
python2.7-minimal 2.7.6-8ubuntu0.3
python3.4 3.4.3-1ubuntu1~14.04.5
python3.4-minimal 3.4.3-1ubuntu1~14.04.5

Ubuntu 12.04 LTS:
libpython2.7 2.7.3-0ubuntu3.9
libpython3.2 3.2.3-0ubuntu3.8
python2.7 2.7.3-0ubuntu3.9
python2.7-minimal 2.7.3-0ubuntu3.9
python3.2 3.2.3-0ubuntu3.8
python3.2-minimal 3.2.3-0ubuntu3.8

After a standard system update you need to restart any Python
applications to make all the necessary changes.

CVE-2016-0772, CVE-2016-1000110, CVE-2016-5636, CVE-2016-5699

Package Information:

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