ESB-2018.0517.3 - UPDATE [Ubuntu] libreoffice-core: Access confidential data - Remote with user interaction - 2018-03-08

Hash: SHA256

             AUSCERT External Security Bulletin Redistribution

                         LibreOffice vulnerability
                               8 March 2018


        AusCERT Security Bulletin Summary

Product:           libreoffice-core
Publisher:         Ubuntu
Operating System:  Ubuntu
Impact/Access:     Access Confidential Data -- Remote with User Interaction
Resolution:        Patch/Upgrade
CVE Names:         CVE-2018-6871  

Reference:         ESB-2018.0435

Original Bulletin:

Revision History:  March     8 2018: USN-3579-1 caused an additional regression 
				     in LibreOffice.
                   March     2 2018: USN-3579-1 caused a regression in LibreOffice.
                   February 22 2018: Initial Release

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

Ubuntu Security Notice USN-3579-3
March 07, 2018

libreoffice regression

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

- - Ubuntu 17.10


USN-3579-1 caused a regression in LibreOffice.

Software Description:
- - libreoffice: Office productivity suite


USN-3579-1 fixed a vulnerability in LibreOffice. After upgrading, it was
no longer possible for LibreOffice to open documents from certain
locations outside of the user's home directory. This update fixes the

We apologize for the inconvenience.

Original advisory details:

 It was discovered that =WEBSERVICE calls in a document could be used to
 read arbitrary files. If a user were tricked in to opening a specially
 crafted document, a remote attacker could exploit this to obtain sensitive
 information. (CVE-2018-6871)

Update instructions:

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

Ubuntu 17.10:
  libreoffice-common              1:5.4.5-0ubuntu0.17.10.5

After a standard system update you need to restart LibreOffice to make
all the necessary changes.


Package Information:

- --------------------------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
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:

Australian Computer Emergency Response Team
The University of Queensland
Qld 4072

Internet Email:
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.