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Sigurnosni nedostatak programskog paketa lxml

==========================================================================
Ubuntu Security Notice USN-4666-1
December 09, 2020

lxml vulnerability
==========================================================================

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

– Ubuntu 20.10
– Ubuntu 20.04 LTS
– Ubuntu 18.04 LTS
– Ubuntu 16.04 LTS
– Ubuntu 14.04 ESM
– Ubuntu 12.04 ESM

Summary:

lxml could allow cross-site scripting (XSS) attacks.

Software Description:
– lxml: pythonic binding for the libxml2 and libxslt libraries

Details:

It was discovered that lxml incorrectly handled certain HTML.
An attacker could possibly use this issue to cross-site scripting (XSS) attacks.

Update instructions:

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

Ubuntu 20.10:
python3-lxml 4.5.2-1ubuntu0.1

Ubuntu 20.04 LTS:
python-lxml 4.5.0-1ubuntu0.1
python3-lxml 4.5.0-1ubuntu0.1

Ubuntu 18.04 LTS:
python-lxml 4.2.1-1ubuntu0.2
python3-lxml 4.2.1-1ubuntu0.2

Ubuntu 16.04 LTS:
python-lxml 3.5.0-1ubuntu0.2
python3-lxml 3.5.0-1ubuntu0.2

Ubuntu 14.04 ESM:
python-lxml 3.3.3-1ubuntu0.2+esm1
python3-lxml 3.3.3-1ubuntu0.2+esm1

Ubuntu 12.04 ESM:
python-lxml 2.3.2-1ubuntu0.4
python3-lxml 2.3.2-1ubuntu0.4

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

References:
https://usn.ubuntu.com/4666-1
CVE-2020-27783

Package Information:
https://launchpad.net/ubuntu/+source/lxml/4.5.2-1ubuntu0.1
https://launchpad.net/ubuntu/+source/lxml/4.5.0-1ubuntu0.1
https://launchpad.net/ubuntu/+source/lxml/4.2.1-1ubuntu0.2
https://launchpad.net/ubuntu/+source/lxml/3.5.0-1ubuntu0.2
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