[USN-3841-2] lxml vulnerability

[Leonidas S. Barbosa]

==========================================================================
Ubuntu Security Notice USN-3841-2
December 10, 2018

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

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

- 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:

USN-3841-1 fixed a vulnerability in lxml. This update provides
the corresponding update for Ubuntu 12.04 ESM.

Original advisory details:

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

Update instructions:

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

Ubuntu 12.04 ESM:
  python-lxml                     2.3.2-1ubuntu0.3
  python3-lxml                    2.3.2-1ubuntu0.3

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

References:
  https://usn.ubuntu.com/usn/usn-3841-2
  https://usn.ubuntu.com/usn/usn-3841-1
  CVE-2018-19787
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