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Ubuntu Security Notice USN-4151-1

Ubuntu Security Notice USN-4151-1
Posted Oct 9, 2019
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 4151-1 - It was discovered that Python incorrectly parsed certain email addresses. A remote attacker could possibly use this issue to trick Python applications into accepting email addresses that should be denied. It was discovered that the Python documentation XML-RPC server incorrectly handled certain fields. A remote attacker could use this issue to execute a cross-site scripting attack.

tags | advisory, remote, xss, python
systems | linux, ubuntu
advisories | CVE-2019-16056, CVE-2019-16935
MD5 | 3ec0bcf4cec5b2ef6699c80ba3fd0a8f

Ubuntu Security Notice USN-4151-1

Change Mirror Download
==========================================================================
Ubuntu Security Notice USN-4151-1
October 09, 2019

python2.7, python3.5, python3.6, python3.7 vulnerabilities
==========================================================================

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

- Ubuntu 19.04
- Ubuntu 18.04 LTS
- Ubuntu 16.04 LTS

Summary:

Several security issues were fixed in Python.

Software Description:
- python2.7: An interactive high-level object-oriented language
- python3.7: An interactive high-level object-oriented language
- python3.6: An interactive high-level object-oriented language
- python3.5: An interactive high-level object-oriented language

Details:

It was discovered that Python incorrectly parsed certain email addresses. A
remote attacker could possibly use this issue to trick Python applications
into accepting email addresses that should be denied. (CVE-2019-16056)

It was discovered that the Python documentation XML-RPC server incorrectly
handled certain fields. A remote attacker could use this issue to execute a
cross-site scripting (XSS) attack. (CVE-2019-16935)

Update instructions:

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

Ubuntu 19.04:
python2.7 2.7.16-2ubuntu0.2
python2.7-minimal 2.7.16-2ubuntu0.2
python3.7 3.7.3-2ubuntu0.2
python3.7-minimal 3.7.3-2ubuntu0.2

Ubuntu 18.04 LTS:
python2.7 2.7.15-4ubuntu4~18.04.2
python2.7-minimal 2.7.15-4ubuntu4~18.04.2
python3.6 3.6.8-1~18.04.3
python3.6-minimal 3.6.8-1~18.04.3

Ubuntu 16.04 LTS:
python2.7 2.7.12-1ubuntu0~16.04.9
python2.7-minimal 2.7.12-1ubuntu0~16.04.9
python3.5 3.5.2-2ubuntu0~16.04.9
python3.5-minimal 3.5.2-2ubuntu0~16.04.9

In general, a standard system update will make all the necessary changes.

References:
https://usn.ubuntu.com/4151-1
CVE-2019-16056, CVE-2019-16935

Package Information:
https://launchpad.net/ubuntu/+source/python2.7/2.7.16-2ubuntu0.2
https://launchpad.net/ubuntu/+source/python3.7/3.7.3-2ubuntu0.2
https://launchpad.net/ubuntu/+source/python2.7/2.7.15-4ubuntu4~18.04.2
https://launchpad.net/ubuntu/+source/python3.6/3.6.8-1~18.04.3
https://launchpad.net/ubuntu/+source/python2.7/2.7.12-1ubuntu0~16.04.9
https://launchpad.net/ubuntu/+source/python3.5/3.5.2-2ubuntu0~16.04.9

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