ESB-2020.4344 – [Ubuntu] lxml: Cross-site scripting – Remote with user interaction

-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA256

===========================================================================
             AUSCERT External Security Bulletin Redistribution

                               ESB-2020.4344
                      USN-4666-1: lxml vulnerability
                             10 December 2020

===========================================================================

        AusCERT Security Bulletin Summary
        ---------------------------------

Product:           lxml
Publisher:         Ubuntu
Operating System:  Ubuntu
Impact/Access:     Cross-site Scripting -- Remote with User Interaction
Resolution:        Patch/Upgrade
CVE Names:         CVE-2020-27783  

Reference:         ESB-2020.4203

Original Bulletin: 
   https://ubuntu.com/security/notices/USN-4666-1

- --------------------------BEGIN INCLUDED TEXT--------------------

USN-4666-1: lxml vulnerability
09 December 2020

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

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

Packages

  o 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

  o python3-lxml - 4.5.2-1ubuntu0.1

Ubuntu 20.04

  o python-lxml - 4.5.0-1ubuntu0.1
  o python3-lxml - 4.5.0-1ubuntu0.1

Ubuntu 18.04

  o python-lxml - 4.2.1-1ubuntu0.2
  o python3-lxml - 4.2.1-1ubuntu0.2

Ubuntu 16.04

  o python-lxml - 3.5.0-1ubuntu0.2
  o python3-lxml - 3.5.0-1ubuntu0.2

Ubuntu 14.04

  o python-lxml - 3.3.3-1ubuntu0.2+esm1
  o python3-lxml - 3.3.3-1ubuntu0.2+esm1

Ubuntu 12.04

  o python-lxml - 2.3.2-1ubuntu0.4
  o python3-lxml - 2.3.2-1ubuntu0.4

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

References

  o CVE-2020-27783

- --------------------------END INCLUDED TEXT--------------------

You have received this e-mail bulletin as a result of your organisation's
registration with AusCERT. The mailing list you are subscribed to is
maintained within your organisation, so if you do not wish to continue
receiving these bulletins you should contact your local IT manager. If
you do not know who that is, please send an email to auscert@auscert.org.au
and we will forward your request to the appropriate person.

NOTE: Third Party Rights
This security bulletin is provided as a service to AusCERT's members.  As
AusCERT did not write the document quoted above, AusCERT has had no control
over its content. The decision to follow or act on information or advice
contained in this security bulletin is the responsibility of each user or
organisation, and should be considered in accordance with your organisation's
site policies and procedures. AusCERT takes no responsibility for consequences
which may arise from following or acting on information or advice contained in
this security bulletin.

NOTE: This is only the original release of the security bulletin.  It may
not be updated when updates to the original are made.  If downloading at
a later date, it is recommended that the bulletin is retrieved directly
from the author's website to ensure that the information is still current.

Contact information for the authors of the original document is included
in the Security Bulletin above.  If you have any questions or need further
information, please contact them directly.

Previous advisories and external security bulletins can be retrieved from:

        https://www.auscert.org.au/bulletins/

===========================================================================
Australian Computer Emergency Response Team
The University of Queensland
Brisbane
Qld 4072

Internet Email: auscert@auscert.org.au
Facsimile:      (07) 3365 7031
Telephone:      (07) 3365 4417 (International: +61 7 3365 4417)
                AusCERT personnel answer during Queensland business hours
                which are GMT+10:00 (AEST).
                On call after hours for member emergencies only.
===========================================================================
-----BEGIN PGP SIGNATURE-----
Comment: http://www.auscert.org.au/render.html?it=1967
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=RlZ4
-----END PGP SIGNATURE-----

Read More

The post ESB-2020.4344 – [Ubuntu] lxml: Cross-site scripting – Remote with user interaction appeared first on Malware Devil.

https://malwaredevil.com/2020/12/10/esb-2020-4344-ubuntu-lxml-cross-site-scripting-remote-with-user-interaction/?utm_source=rss&utm_medium=rss&utm_campaign=esb-2020-4344-ubuntu-lxml-cross-site-scripting-remote-with-user-interaction